Reverse words in a string: Difference between revisions
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{{task}}
;Task:
Reverse the order of all tokens in each of a number of strings and display the result; the order of characters within a token should not be modified.
;Example:
<big><big><code>Hey you, Bub! </code></big></big> would be shown reversed as: <big><big><code> Bub! you, Hey </code></big></big>
Tokens are any non-space characters separated by spaces (formally, white-space); the visible punctuation form part of the word within which it is located and should not be modified.
You may assume that there are no significant non-visible characters in the input. Multiple or superfluous spaces may be compressed into a single space.
Some strings have no tokens, so an empty string (or one just containing spaces) would be the result.
'''Display''' the strings in order (1<sup>st</sup>, 2<sup>nd</sup>, 3<sup>rd</sup>, ···), and one string per line.
(You can consider the ten strings as ten lines, and the tokens as words.)
;Input data
Line 21 ⟶ 36:
10 ║ Frost Robert ----------------------- ║
╚════════════════════════════════════════╝
</pre>
;Cf.
* [[Phrase reversals]]
<br><br>
=={{header|11l}}==
{{trans|Python}}
<syntaxhighlight lang="11l">V text =
‘---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------’
L(line) text.split("\n")
print(reversed(line.split(‘ ’)).join(‘ ’))</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Action!}}==
<syntaxhighlight lang="action!">PROC Reverse(CHAR ARRAY src,dst)
BYTE i,j,k,beg,end
i=1 j=src(0)
WHILE j>0
DO
WHILE j>0 AND src(j)=$20
DO j==-1 OD
IF j=0 THEN
EXIT
ELSE
end=j
FI
WHILE j>0 AND src(j)#$20
DO j==-1 OD
beg=j+1
IF i>1 THEN
dst(i)=$20 i==+1
FI
FOR k=beg TO end
DO
dst(i)=src(k) i==+1
OD
OD
dst(0)=i-1
RETURN
PROC Test(CHAR ARRAY src)
CHAR ARRAY dst(40)
Reverse(src,dst)
PrintE(dst)
RETURN
PROC Main()
Test("---------- Ice and Fire ------------")
Test("")
Test("fire, in end will world the say Some")
Test("ice. in say Some")
Test("desire of tasted I've what From")
Test("fire. favor who those with hold I")
Test("")
Test("... elided paragraph last ...")
Test("")
Test("Frost Robert -----------------------")
RETURN</syntaxhighlight>
{{out}}
[https://gitlab.com/amarok8bit/action-rosetta-code/-/raw/master/images/Reverse_words_in_a_string.png Screenshot from Atari 8-bit computer]
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
Line 29 ⟶ 145:
To Split a string into words, we define a Package "Simple_Parse". This package is also used for the Phrase Reversal Task [[http://rosettacode.org/wiki/Phrase_reversals#Ada]].
<
-- a very simplistic parser, useful to split a string into words
Line 39 ⟶ 155:
-- else Next_Word sets Point to S'Last+1 and returns ""
end Simple_Parse;</
The implementation of "Simple_Parse":
<
function Next_Word(S: String; Point: in out Positive) return String is
Line 62 ⟶ 178:
end Next_Word;
end Simple_Parse;</
===Main Program===
<syntaxhighlight lang="ada">with Ada.Text_IO, Simple_Parse;
procedure Reverse_Words is
Line 87 ⟶ 202:
Put_Line(Reverse_Words(Get_Line)); -- poem is read from standard input
end loop;
end Reverse_Words;</
=={{header|Aime}}==
<syntaxhighlight lang
list l, x;
text s, t;
l = list("---------- Ice and Fire ------------",
"
"fire, in end will world the say Some",
"
"
"
"
"... elided paragraph last ...",
"
"Frost Robert -----------------------"
for (, t in l) {
file().b_affix(t).list(x, 0);
o_space(sign(j));
}
o_newline();
}</syntaxhighlight>
{{out}}
<pre>------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</pre>
=={{header|ALGOL 68}}==
<syntaxhighlight lang="algol68"># returns original phrase with the order of the words reversed #
# a word is a sequence of non-blank characters #
PROC reverse word order = ( STRING original phrase )STRING:
BEGIN
STRING words reversed := "";
STRING separator := "";
INT start pos := LWB original phrase;
WHILE
# skip leading spaces #
WHILE IF start pos <= UPB original phrase
THEN original phrase[ start pos ] = " "
ELSE FALSE
FI
DO start pos +:= 1
OD;
start pos <= UPB original phrase
DO
# have another word, find it #
INT end pos := start pos;
WHILE IF end pos <= UPB original phrase
THEN original phrase[ end pos ] /= " "
ELSE FALSE
FI
DO end pos +:= 1
OD;
( original phrase[ start pos : end pos - 1 ] + separator ) +=: words reversed;
separator := " ";
start pos := end pos + 1
OD;
words reversed
END # reverse word order # ;
# reverse the words in the lines as per the task #
print( ( reverse word order ( "--------- Ice and Fire ------------ " ), newline ) );
print( ( reverse word order ( " " ), newline ) );
print( ( reverse word order ( "fire, in end will world the say Some" ), newline ) );
print( ( reverse word order ( "ice. in say Some " ), newline ) );
print( ( reverse word order ( "desire of tasted I've what From " ), newline ) );
print( ( reverse word order ( "fire. favor who those with hold I " ), newline ) );
print( ( reverse word order ( " " ), newline ) );
print( ( reverse word order ( "... elided paragraph last ... " ), newline ) );
print( ( reverse word order ( " " ), newline ) );
print( ( reverse word order ( "Frost Robert -----------------------" ), newline ) )
</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ---------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|AppleScript}}==
<syntaxhighlight lang="applescript">on run
unlines(map(reverseWords, |lines|("---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------")))
end run
-- GENERIC FUNCTIONS ---------------------------------------------------------
-- reverseWords :: String -> String
on reverseWords(str)
unwords(|reverse|(|words|(str)))
end reverseWords
-- |reverse| :: [a] -> [a]
on |reverse|(xs)
if class of xs is text then
(reverse of characters of xs) as text
else
reverse of xs
end if
end |reverse|
-- |lines| :: Text -> [Text]
on |lines|(str)
splitOn(linefeed, str)
end |lines|
-- |words| :: Text -> [Text]
on |words|(str)
splitOn(space, str)
end |words|
-- ulines :: [Text] -> Text
on unlines(lstLines)
intercalate(linefeed, lstLines)
end unlines
-- unwords :: [Text] -> Text
on unwords(lstWords)
intercalate(space, lstWords)
end unwords
-- splitOn :: Text -> Text -> [Text]
on splitOn(strDelim, strMain)
set {dlm, my text item delimiters} to {my text item delimiters, strDelim}
set lstParts to text items of strMain
set my text item delimiters to dlm
lstParts
end splitOn
-- interCalate :: Text -> [Text] -> Text
on intercalate(strText, lstText)
set {dlm, my text item delimiters} to {my text item delimiters, strText}
set strJoined to lstText as text
set my text item delimiters to dlm
strJoined
end intercalate
-- map :: (a -> b) -> [a] -> [b]
on map(f, xs)
tell mReturn(f)
set lng to length of xs
set lst to {}
repeat with i from 1 to lng
set end of lst to lambda(item i of xs, i, xs)
end repeat
return lst
end tell
end map
-- Lift 2nd class handler function into 1st class script wrapper
-- mReturn :: Handler -> Script
on mReturn(f)
if class of f is script then
f
else
script
property lambda : f
end script
end if
end mReturn
</syntaxhighlight>
{{out}}
<pre>------------ Fire and Ice ----------
Line 135 ⟶ 407:
=={{header|Applesoft BASIC}}==
<
110 DATA" "
120 DATA"FIRE, IN END WILL WORLD THE SAY SOME"
Line 161 ⟶ 433:
350 IF C$ <> " " THEN W$ = C$ + W$ : NEXT I
360 RETURN
</syntaxhighlight>
=={{header|Arturo}}==
<syntaxhighlight lang="rebol">text: {
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------}
reversed: map split.lines text =>
[join.with:" " reverse split.words &]
print join.with:"\n" reversed</syntaxhighlight>
{{out}}
<pre>------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</pre>
=={{header|AutoHotkey}}==
<
(Join`r`n
---------- Ice and Fire ------------
Line 184 ⟶ 487:
Output .= Line "`n", Line := ""
}
MsgBox, % RTrim(Output, "`n")</
=={{header|AWK}}==
<syntaxhighlight lang="awk">
# syntax: GAWK -f REVERSE_WORDS_IN_A_STRING.AWK
BEGIN {
Line 210 ⟶ 513:
exit(0)
}
</syntaxhighlight>
{{Output}}
<pre>
Line 224 ⟶ 527:
----------------------- Robert Frost
</pre>
=={{header|BaCon}}==
<syntaxhighlight lang="qbasic">
PRINT REV$("---------- Ice and Fire ------------")
PRINT
PRINT REV$("fire, in end will world the say Some")
PRINT REV$("ice. in say Some ")
PRINT REV$("desire of tasted I've what From ")
PRINT REV$("fire. favor who those with hold I ")
PRINT
PRINT REV$("... elided paragraph last ... ")
PRINT
PRINT REV$("Frost Robert -----------------------")
</syntaxhighlight>
Using the REV$ function which takes a sentence as a delimited string where the items are separated by a delimiter (the space character is the default delimiter).
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Batch File}}==
<syntaxhighlight lang="dos">@echo off
::The Main Thing...
cls
echo.
call :reverse "---------- Ice and Fire ------------"
call :reverse
call :reverse "fire, in end will world the say Some"
call :reverse "ice. in say Some"
call :reverse "desire of tasted I've what From"
call :reverse "fire. favor who those with hold I"
call :reverse
call :reverse "... elided paragraph last ..."
call :reverse
call :reverse "Frost Robert -----------------------"
echo.
pause>nul
exit
::/The Main Thing...
::The Function...
:reverse
set reversed=&set word=&set str=%1
:process
for /f "tokens=1,*" %%A in (%str%) do (
set str=%%B
set word=%%A
)
set reversed=%word% %reversed%
set str="%str%"
if not %str%=="" goto process
echo.%reversed%
goto :EOF
::/The Function...</syntaxhighlight>
{{Out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|BASIC256}}==
{{trans|FreeBASIC}}
<syntaxhighlight lang="basic256">source = freefile
open (source, "m:\text.txt")
textEnt$ = ""
dim textSal$(size(source)*8)
linea = 0
while not eof(source)
textEnt$ = readline(source)
linea += 1
textSal$[linea] = textEnt$
end while
for n = size(source) to 1 step -1
print textSal$[n];
next n
close source</syntaxhighlight>
=={{header|BBC BASIC}}==
{{works with|BBC BASIC for Windows}}
<
\ 'FNreverse("")\
\ 'FNreverse("fire, in end will world the say Some")\
Line 242 ⟶ 643:
LOCAL sp%
sp%=INSTR(s$," ")
IF sp% THEN =FNreverse(MID$(s$,sp%+1))+" "+LEFT$(s$,sp%-1) ELSE =s$</
{{out}}
Line 256 ⟶ 657:
----------------------- Robert Frost</pre>
=={{header|BQN}}==
<syntaxhighlight lang="bqn">Split ← +`∘<⟜»⊸×⊸-⟜¬∘>⟜' '⊸⊔
Join ← (⊣∾' '∾⊢)´⍟(1<≡)
text ← ⍉≍⟨
"---------- Ice and Fire ------------"
""
"fire, in end will world the say Some"
"ice. in say Some "
"desire of tasted I've what From "
"fire. favor who those with hold I "
""
"... elided paragraph last ..."
""
"Frost Robert -----------------------"⟩
Join∘⌽∘Split¨ text</syntaxhighlight>
Alternative based on the approach described in [https://saltysylvi.github.io/blog/flat1.html this blog post]:
<syntaxhighlight lang="bqn">{(⍒+`∨⟜»' '=𝕩)⊏𝕩}¨ text</syntaxhighlight>
{{out}}
<pre>┌─
╵ "------------ Fire and Ice ----------"
⟨⟩
"Some say the world will end in fire,"
"Some say in ice."
"From what I've tasted of desire"
"I hold with those who favor fire."
⟨⟩
"... last paragraph elided ..."
⟨⟩
"----------------------- Robert Frost"
┘</pre>
=={{header|Bracmat}}==
<
fire, in end will world the say Some
Line 294 ⟶ 727:
& !output reverse$!text:?output
& out$str$!output
);</
{{out}}
<pre>------------ Fire and Ice ----------
Line 306 ⟶ 739:
----------------------- Robert Frost</pre>
=={{header|Burlesque}}==
<syntaxhighlight lang="blsq">
blsq ) "It is not raining"wd<-wd
"raining not is It"
blsq ) "ice. in say some"wd<-wd
"some say in ice."
</syntaxhighlight>
=={{header|C}}==
<
#include <ctype.h>
Line 342 ⟶ 783:
return 0;
}</
Output is the same as everyone else's.
=={{header|C sharp|C#}}==
<syntaxhighlight lang="csharp">using System;
public class ReverseWordsInString
{
public static void Main(string[] args)
{
string text = @"
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
";
foreach (string line in text.Split(Environment.NewLine)) {
//Splits on any whitespace, not just spaces
string[] words = line.Split(default(char[]), StringSplitOptions.RemoveEmptyEntries);
Array.Reverse(words);
WriteLine(string.Join(" ", words));
}
}
}</syntaxhighlight>
=={{header|C++}}==
<
#include <algorithm>
#include <functional>
Line 407 ⟶ 877:
return 0;
}
</syntaxhighlight>
===
<
#include <string>
#include <iostream>
Line 451 ⟶ 921:
return system( "pause" );
}
</syntaxhighlight>
=={{header|Clojure}}==
<
(def poem
"---------- Ice and Fire ------------
Line 467 ⟶ 937:
Frost Robert -----------------------")
(dorun
(map println (map #(apply str (interpose " " (reverse (re-seq #"[^\s]+" %)))) (clojure.string/split poem #"\n"))))
</syntaxhighlight>
Output is the same as everyone else's.
=={{header|COBOL}}==
<syntaxhighlight lang="cobol">
program-id. rev-word.
data division.
working-storage section.
1 text-block.
2 pic x(36) value "---------- Ice and Fire ------------".
2 pic x(36) value " ".
2 pic x(36) value "fire, in end will world the say Some".
2 pic x(36) value "ice. in say Some ".
2 pic x(36) value "desire of tasted I've what From ".
2 pic x(36) value "fire. favor who those with hold I ".
2 pic x(36) value " ".
2 pic x(36) value "... elided paragraph last ... ".
2 pic x(36) value " ".
2 pic x(36) value "Frost Robert -----------------------".
1 redefines text-block.
2 occurs 10.
3 text-line pic x(36).
1 text-word.
2 wk-len binary pic 9(4).
2 wk-word pic x(36).
1 word-stack.
2 occurs 10.
3 word-entry.
4 word-len binary pic 9(4).
4 word pic x(36).
1 binary.
2 i pic 9(4).
2 pos pic 9(4).
2 word-stack-ptr pic 9(4).
procedure division.
perform varying i from 1 by 1
until i > 10
perform push-words
perform pop-words
end-perform
stop run
.
push-words.
move 1 to pos
move 0 to word-stack-ptr
perform until pos > 36
unstring text-line (i) delimited by all space
into wk-word count in wk-len
pointer pos
end-unstring
add 1 to word-stack-ptr
move text-word to word-entry (word-stack-ptr)
end-perform
.
pop-words.
perform varying word-stack-ptr from word-stack-ptr
by -1
until word-stack-ptr < 1
move word-entry (word-stack-ptr) to text-word
display wk-word (1:wk-len) space with no advancing
end-perform
display space
.
end program rev-word.
</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|CoffeeScript}}==
{{trans|JavaScript}}
<syntaxhighlight lang="coffeescript">strReversed = '---------- Ice and Fire ------------\n\n
fire, in end will world the say Some\n
ice. in say Some\n
desire of tasted I\'ve what From\n
fire. favor who those with hold I\n\n
... elided paragraph last ...\n\n
Frost Robert -----------------------'
reverseString = (s) ->
s.split('\n').map((l) -> l.split(/\s/).reverse().join ' ').join '\n'
console.log reverseString(strReversed)</syntaxhighlight>
{{out}}
As JavaScript.
=={{header|Common Lisp}}==
<
(labels
((iter (s lst)
Line 501 ⟶ 1,067:
(loop for line = (read-line s NIL)
while line
do (format t "~{~a~#[~:; ~]~}~%" (split-and-reverse line))))</
Output is the same as everyone else's.
=={{header|D}}==
<
import std.stdio, std.string, std.range, std.algorithm;
Line 523 ⟶ 1,089:
writefln("%(%-(%s %)\n%)",
text.splitLines.map!(r => r.split.retro));
}</
The output is the same as the Python entry.
=={{header|Delphi}}==
<syntaxhighlight lang="delphi">program RosettaCode_ReverseWordsInAString;
{$APPTYPE CONSOLE}
uses Classes, Types, StrUtils;
const
TXT =
'---------- Ice and Fire -----------'+sLineBreak+
sLineBreak+
'fire, in end will world the say Some'+sLineBreak+
'ice. in say Some'+sLineBreak+
'desire of tasted I''ve what From'+sLineBreak+
'fire. favor who those with hold I'+sLineBreak+
sLineBreak+
'... elided paragraph last ...'+sLineBreak+
sLineBreak+
'Frost Robert -----------------------'+sLineBreak;
var
i, w: Integer;
d: TStringDynArray;
begin
with TStringList.Create do
try
Text := TXT;
for i := 0 to Count - 1 do
begin
d := SplitString(Strings[i], #32);
Strings[i] := '';
for w := Length(d) - 1 downto 0 do
Strings[i] := Strings[i] + #32 + d[w];
end;
Writeln(Text);
finally
Free
end;
ReadLn;
end.</syntaxhighlight>
The output is the same as the Pascal entry.
=={{header|EasyLang}}==
<syntaxhighlight>
repeat
s$ = input
until error = 1
s$[] = strsplit s$ " "
for i = len s$[] downto 1
write s$[i] & " "
.
print ""
.
input_data
--------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
</syntaxhighlight>
=={{header|EchoLisp}}==
Using a here-string input :
<syntaxhighlight lang="scheme">
(define S #<<
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
>>#)
(for-each writeln
(for/list ((line (string-split S "\n")))
(string-join (reverse (string-split line " ")) " ")))
</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Elena}}==
ELENA 6.x:
<syntaxhighlight lang="elena">import extensions;
import system'routines;
public program()
{
var text := new string[]{"---------- Ice and Fire ------------",
"",
"fire, in end will world the say Some",
"ice. in say Some",
"desire of tasted I've what From",
"fire. favor who those with hold I",
"",
"... elided paragraph last ...",
"",
"Frost Robert -----------------------"};
text.forEach::(line)
{
line.splitBy(" ").sequenceReverse().forEach::(word)
{
console.print(word," ")
};
console.writeLine()
}
}</syntaxhighlight>
=={{header|Elixir}}==
<syntaxhighlight lang="elixir">defmodule RC do
def reverse_words(txt) do
txt |> String.split("\n") # split lines
Line 537 ⟶ 1,229:
|> Enum.join("\n") # rejoin lines
end
end</syntaxhighlight>
Usage:
<
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
"""
IO.puts RC.reverse_words(txt)</syntaxhighlight>
=={{header|Elm}}==
<syntaxhighlight lang="elm">
reversedPoem =
String.trim """
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
"""
reverseWords string =
string |> String.words |> List.reverse |> String.join " "
reverseLinesWords string =
string |> String.lines |> List.map reverseWords |> String.join "\n"
poem =
reverseLinesWords reversedPoem
</syntaxhighlight>
=={{header|Emacs Lisp}}==
<syntaxhighlight lang="lisp">(defun reverse-words (line)
(insert
(format "%s\n"
(mapconcat 'identity (reverse (split-string line)) " "))))
(defun reverse-lines (lines)
(mapcar 'reverse-words lines))
(reverse-lines
'("---------- Ice and Fire ------------"
""
"fire, in end will world the say Some"
"ice. in say Some"
"desire of tasted I've what From"
"fire. favor who those with hold I"
""
"... elided paragraph last ..."
""
"Frost Robert ----------------------- "))</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|F_Sharp|F#}}==
<syntaxhighlight lang="fsharp">
//Reverse words in a string. Nigel Galloway: July 14th., 2021
[" ---------- Ice and Fire ------------ ";
" ";
" fire, in end will world the say Some ";
" ice. in say Some ";
" desire of tasted I've what From ";
" fire. favour who those with hold I ";
" ";
" ... elided paragraph last ... ";
" ";
" Frost Robert ----------------------- "]|>List.map(fun n->n.Split " "|>Array.filter((<>)"")|>Array.rev|>String.concat " ")|>List.iter(printfn "%s")
</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favour fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Factor}}==
<syntaxhighlight lang="factor">USING: io sequences splitting ;
IN: rosetta-code.reverse-words
"---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------"
"\n" split [ " " split reverse " " join ] map [ print ] each</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Forth}}==
The word "parse-name" consumes a word from input stream and places it on the stack. The word "type" takes a word from the data stack and prints it. Calling these two words before and after the recursive call effectively reverses a string.
<syntaxhighlight lang="text">: not-empty? dup 0 > ;
: (reverse) parse-name not-empty? IF recurse THEN type space ;
: reverse (reverse) cr ;
reverse ---------- Ice and Fire ------------
reverse
reverse fire, in end will world the say Some
reverse ice. in say Some
reverse desire of tasted I've what From
reverse fire. favor who those with hold I
reverse
reverse ... elided paragraph last ...
reverse
reverse Frost Robert -----------------------</syntaxhighlight>
'''Output'''
Interpreted above code at the Forth console
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
ok</pre>
=={{header|Fortran}}==
Compiled using G95 on x86 system running Puppy Linux.
Fortran syntax is mostly Fortran 77.
<syntaxhighlight lang="fortran">
character*40 words
character*40 reversed
logical inblank
ierr=0
read (5,fmt="(a)",iostat=ierr)words
do while (ierr.eq.0)
inblank=.true.
ipos=1
do i=40,1,-1
if(words(i:i).ne.' '.and.inblank) then
last=i
inblank=.false.
end if
if(.not.inblank.and.words(i:i).eq.' ') then
reversed(ipos:ipos+last-i)=words(i+1:last)
ipos=ipos+last-i+1
inblank=.true.
end if
if(.not.inblank.and.i.eq.1) then
reversed(ipos:ipos+last-1)=words(1:last)
ipos=ipos+last
end if
end do
print *,words,'=> ',reversed(1:ipos-1)
read (5,fmt="(a)",iostat=ierr)words
end do
end
</syntaxhighlight>
Output from comand: <b>cat frostPoem.txt | reverse</b><p>
where file frostPoem.txt contains the input text.
<pre>
---------- Ice and Fire ----------- => ----------- Fire and Ice ----------
=>
fire, in end will world the say Some => Some say the world will end in fire,
ice. in say Some => Some say in ice.
desire of tasted I've what From => From what I've tasted of desire
fire. favor who those with hold I => I hold with those who favor fire.
=>
... elided paragraph last ... => ... last paragraph elided ...
=>
Frost Robert ----------------------- => ----------------------- Robert Frost
</pre>
=={{header|FreeBASIC}}==
<syntaxhighlight lang="freebasic">' FB 1.05.0 Win64
Sub split (s As String, sepList As String, result() As String, removeEmpty As Boolean = False)
If s = "" OrElse sepList = "" Then
Redim result(0)
result(0) = s
Return
End If
Dim As Integer i, j, count = 0, empty = 0, length
Dim As Integer position(Len(s) + 1)
position(0) = 0
For i = 0 To len(s) - 1
For j = 0 to Len(sepList) - 1
If s[i] = sepList[j] Then
count += 1
position(count) = i + 1
End If
Next j
Next i
Redim result(count)
If count = 0 Then
result(0) = s
Return
End If
position(count + 1) = len(s) + 1
For i = 1 To count + 1
length = position(i) - position(i - 1) - 1
result(i - 1 - empty) = Mid(s, position(i - 1) + 1, length)
If removeEmpty Andalso CBool(length = 0) Then empty += 1
Next
If empty > 0 Then Redim Preserve result(count - empty)
End Sub
Dim s As String = "Hey you, Bub!"
Dim a() As String
split(s, " ", a(), true)
Dim reversed As String = ""
For i As Integer = UBound(a) To LBound(a) Step -1
reversed += a(i)
If i > LBound(a) Then reversed += " "
Next
Print "Original String = "; s
Print "Reversed String = "; reversed
Print
Print "Press any key to quit"
Sleep</syntaxhighlight>
{{out}}
<pre>
Original String = Hey you, Bub!
Reversed String = Bub! you, Hey
</pre>
=={{header|Frink}}==
<syntaxhighlight lang="frink">
lines=split["\n",
"""---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
.. elided paragraph last ...
Frost Robert -----------------------"""]
for line = lines
println[join[" ", reverse[split[%r/\s+/, line]]]]
</syntaxhighlight>
=={{header|FutureBasic}}==
<syntaxhighlight lang="futurebasic">
include "NSLog.incl"
CFStringRef frostStr
CFArrayRef frostArr, tempArr
CFMutableStringRef mutStr
NSInteger i, count
frostStr = @"---------- Ice and Fire ------------\n¬
\n¬
fire, in end will world the say Some\n¬
ice. in say Some\n¬
desire of tasted I've what From\n¬
fire. favor who those with hold I\n¬
\n¬
… elided paragraph last …\n¬
\n¬
Frost Robert -----------------------\n"
frostArr = fn StringComponentsSeparatedByString( frostStr, @"\n" )
count = fn ArrayCount( frostArr )
mutStr = fn MutableStringWithCapacity( 0 )
for i = 0 to count - 1
tempArr = fn StringComponentsSeparatedByString( frostArr[i], @" " )
tempArr = fn EnumeratorAllObjects( fn ArrayReverseObjectEnumerator( tempArr ) )
MutableStringAppendString( mutStr, fn ArrayComponentsJoinedByString( tempArr, @" " ) )
MutableStringAppendString( mutStr, @"\n" )
next
NSLog( @"%@", mutStr )
HandleEvents
</syntaxhighlight>
Output:
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
… last paragraph elided …
----------------------- Robert Frost
</pre>
=={{header|Gambas}}==
'''[https://gambas-playground.proko.eu/?gist=c81c1bbf94e856035fd382015d208272 Click this link to run this code]'''
<syntaxhighlight lang="gambas">Public Sub Main()
Dim sString As New String[10] 'Array for the input text
Dim sLine As New String[] 'Array of each word in a line
Dim siCount0, siCount1 As Short 'Counters
Dim sOutput, sReverse, sTemp As String 'Strings
sString[0] = "---------- Ice And Fire ------------" 'Input text
sString[1] = " "
sString[2] = "fire, in end will world the say Some"
sString[3] = "ice. in say Some "
sString[4] = "desire of tasted I've what From "
sString[5] = "fire. favor who those with hold I "
sString[6] = " "
sString[7] = "... elided paragraph last ... "
sString[8] = " "
sString[9] = "Frost Robert -----------------------"
For siCount0 = 0 To 9 'To work through each line of input text
If Trim(sString[siCount0]) = "" Then sString[siCount0] = " " 'If the line is all spaces then make it 1 space
For Each sTemp In Split(Trim(sString[siCount0]), " ") 'Split the trimmed line by spaces
sLine.Add(sTemp) 'Add each word to the sLine array
Next
For siCount1 = sLine.max DownTo 0 'Loop from the last in the sLine array to 0
sReverse &= sLine[siCount1] & " " 'Fill sReverse with words reversed, adding a space
Next
sOutput &= Trim(sReverse) & gb.NewLine 'Add the reversed words to sOutput and add a newline
sReverse = "" 'Clear sReverse
sLine.Clear 'Clear sLine array
Next
Print sOutput 'Print the output
End</syntaxhighlight>
Output:
<pre>
------------ Fire And Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Gema}}==
<
=={{header|Go}}==
<
import (
Line 595 ⟶ 1,671:
fmt.Println(t)
}
}</
{{out}}
<pre>
Line 611 ⟶ 1,687:
=={{header|Groovy}}==
<
.append('---------- Ice and Fire ------------\n')
.append(' \n')
Line 625 ⟶ 1,701:
text.eachLine { line ->
println "$line --> ${line.split(' ').reverse().join(' ')}"
}</
{{output}}
<pre>---------- Ice and Fire ------------ --> ------------ Fire and Ice ----------
Line 639 ⟶ 1,715:
=={{header|Haskell}}==
<syntaxhighlight lang="haskell">
revstr :: String -> String
revstr = unwords . reverse . words -- point-free style
Line 658 ⟶ 1,734:
\\n\
\Frost Robert -----------------------\n" --multiline string notation requires \ at end and start of lines, and \n to be manually input
</syntaxhighlight>
unwords, reverse, words, unlines, map and lines are built-in functions, all available at GHC's Prelude.
For better visualization, use "putStr test"
Line 665 ⟶ 1,741:
Works in both languages:
<
every write(rWords(&input))
end
Line 678 ⟶ 1,754:
procedure genWords()
while w := 1(tab(upto(" \t")),tab(many(" \t"))) || " " do suspend w
end</
{{out}} for test file:
Line 695 ⟶ 1,771:
->
</pre>
=={{header|Insitux}}==
<syntaxhighlight lang="insitux">(var poem
"---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------")
(function split-join by then x
(-> x (split by) then (join by)))
(split-join "\n" (map @(split-join " " reverse)) poem)</syntaxhighlight>
=={{header|J}}==
Line 700 ⟶ 1,794:
Treated interactively:
<
---------- Ice and Fire ------------
Line 722 ⟶ 1,816:
----------------------- Robert Frost
</syntaxhighlight>
The verb phrase <code>( [: ; @ |. [: < ;. 1 ' ' , ])</code> reverses words in a string. The rest of the implementation has to do with defining the block of text we are working on, and applying this verb phrase to each line of that text.
Another approach:
<syntaxhighlight lang="j">echo ;:inv@|.@cut;._2 {{)n
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
}}</syntaxhighlight>
produces:
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Java}}==
<
static final String[] lines = {
Line 746 ⟶ 1,872:
}
}
}</
{{works with|Java|8+}}
<
import static java.util.Arrays.stream;
Line 786 ⟶ 1,912:
;
}
}</
{{out}}
Line 802 ⟶ 1,928:
=={{header|JavaScript}}==
<
"---------- Ice and Fire ------------\n\
\n\
fire, in end will world the say Some\n\
ice. in say Some\n\
desire of tasted I've what From\n\
fire. favor who those with hold I\n\
\n\
... elided paragraph last ...\n\
\n\
Frost Robert -----------------------";
function reverseString(s) {
return s.split('\n').map(
}
).join('\n');
}
console.log(
reverseString(strReversed)
);</syntaxhighlight>
Output:
<pre>------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</pre>
=={{header|jq}}==
<
This solution requires a version of jq with regex support for split.
The following example assumes the above line is in a file named reverse_words.jq and that the input text is in a file named IceAndFire.txt. The -r option instructs jq to read the input file as strings, line by line.<
------------ Fire and Ice ----------
Line 824 ⟶ 1,978:
... last paragraph elided ...
----------------------- Robert Frost</
=={{header|Jsish}}==
From Javascript entry.
<syntaxhighlight lang="javascript">var strReversed =
"---------- Ice and Fire ------------\n
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
\n... elided paragraph last ...\n
Frost Robert -----------------------";
function reverseString(s) {
return s.split('\n').map(
function (line) {
return line.split().reverse().join(' ');
}
).join('\n');
}
;reverseString('Hey you, Bub!');
;strReversed;
;reverseString(strReversed);
/*
=!EXPECTSTART!=
reverseString('Hey you, Bub!') ==> Bub! you, Hey
strReversed ==> ---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
reverseString(strReversed) ==> ------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
=!EXPECTEND!=
*/</syntaxhighlight>
{{out}}
<pre>
prompt$ jsish -u reverseWords.jsi
[PASS] reverseWords.jsi</pre>
=={{header|Julia}}==
<
<pre>julia> revstring("Hey you, Bub!")
"Bub! you, Hey"
Line 856 ⟶ 2,064:
----------------------- Robert Frost</pre>
=={{header|Kotlin}}==
<syntaxhighlight lang="kotlin">fun reversedWords(s: String) = s.split(" ").filter { it.isNotEmpty() }.reversed().joinToString(" ")
fun main() {
val s = "Hey you, Bub!"
println(reversedWords(s))
println()
val sl = listOf(
" ---------- Ice and Fire ------------ ",
" ",
" fire, in end will world the say Some ",
" ice. in say Some ",
" desire of tasted I've what From ",
" fire. favor who those with hold I ",
" ",
" ... elided paragraph last ... ",
" ",
" Frost Robert ----------------------- ",
)
sl.forEach { println(reversedWords(it)) }
}</syntaxhighlight>
{{out}}
<pre>
Bub! you, Hey
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Ksh}}==
<syntaxhighlight lang="ksh">
#!/bin/ksh
# Reverse words in a string
# # Variables:
#
typeset -a wArr
integer i
######
# main #
######
while read -A wArr; do
for ((i=${#wArr[@]}-1; i>=0; i--)); do
printf "%s " "${wArr[i]}"
done
echo
done << EOF
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
EOF</syntaxhighlight>
{{out}}<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost </pre>
=={{header|Lambdatalk}}==
This answer illustrates how a missing primitive (line_split) can be added directly in the wiki page.
<syntaxhighlight lang="scheme">
1) We write a function
{def line_reverse
{def line_reverse.r
{lambda {:i :txt :length}
{if {> :i :length}
then
else {br}{A2S {A.reverse! {A.get :i :txt}}}
{line_reverse.r {+ :i 1} :txt :length}}}}
{lambda {:txt}
{let { {:a {line_split {:txt}}} }
{line_reverse.r 0 :a {- {A.length :a} 1}}}} }
-> line_reverse
where A2S translates an array into a sentence
{def A2S
{lambda {:a}
{if {A.empty? :a}
then
else {A.first :a} {A2S {A.rest :a}}}}}
-> A2S
and line_split is a javascript primitive directly written in the wiki page,
added to the dictionary and returning an array of lines
LAMBDATALK.DICT['line_split'] = function () {
var args = arguments[0].split("\n");
var str = "{A.new ";
for (var i=0; i< args.length; i++)
str += "{A.new " + args[i] + "} ";
str += "}";
return LAMBDATALK.eval_forms( str )
};
2) input (from a simple text source without any presetting)
{def rosetta
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I''ve what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
}
-> rosetta
3) calling the function:
{line_reverse rosetta}
->
3) output
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I''ve tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</syntaxhighlight>
=={{header|Liberty BASIC}}==
<syntaxhighlight lang="lb">
for i = 1 to 10
read string$
Line 885 ⟶ 2,247:
data ""
data "Frost Robert -----------------------"
</syntaxhighlight>
{{Out}}
<pre>------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</pre>
=={{header|LiveCode}}==
The input text has been entered into the contents of a text field called "Fieldtxt", add a button and put the following in its mouseUp
<syntaxhighlight lang="livecode">repeat for each line txtln in fld "Fieldtxt"
repeat with i = the number of words of txtln down to 1
put word i of txtln & space after txtrev
end repeat
put cr after txtrev -- preserve line
end repeat
put txtrev</syntaxhighlight>
=={{header|LiveScript}}==
<syntaxhighlight lang="livescript">
poem =
"""
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
"""
reverse-words = (.split ' ') >> (.reverse!) >> (.join ' ')
reverse-string = (.split '\n') >> (.map reverse-words) >> (.join '\n')
reverse-string poem
</syntaxhighlight>
=={{header|Logo}}==
This version just reads the words from standard input.
<syntaxhighlight lang="logo">do.until [
make "line readlist
print reverse :line
] [word? :line]
bye</syntaxhighlight>
{{Out}}
Given this input: <pre>---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------</pre>
it produces this output:
<pre>------------ Fire and Ice ----------
Line 899 ⟶ 2,324:
=={{header|Lua}}==
See below for original entry and the input string under variable 's'. Here is a significantly shorter program.
<syntaxhighlight lang="lua">
local lines = {}
for line in (s .. "\n"):gmatch("(.-)\n") do
local this = {}
for word in line:gmatch("%S+") do
table.insert(this, 1, word)
end
lines[#lines + 1] = table.concat(this, " ")
end
print(table.concat(lines, "\n"))
</syntaxhighlight>
Original response:
(''Note:'' The Wiki's syntax highlighting for Lua does not highlight the following valid string literal correctly, so the listing is split in two parts.)
Line 914 ⟶ 2,357:
]]
<
local res = {}
for i = #a, 1, -1 do
Line 932 ⟶ 2,375:
for line, nl in s:gmatch("([^\n]-)(\n)") do
print(table.concat(table.reverse(splittokens(line)), ' '))
end</
''Note:'' With the technique used here for splitting <code>s</code> into lines (not part of the task) the last line will be gobbled up if it does not end with a newline.
=={{header|
<syntaxhighlight lang="maple">while (true) do
input := readline("input.txt"):
if input = 0 then break: fi:
input := StringTools:-Trim(input): # remove leading/trailing space
input := StringTools:-Join(ListTools:-Reverse(StringTools:-Split(input, " "))," "):
printf("%s\n", input):
od:</syntaxhighlight>
{{Out|Output}}
<pre>------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</pre>
=={{header|Mathematica}}/{{header|Wolfram Language}}==
<syntaxhighlight lang="mathematica">poem = "---------- Ice and Fire ------------
fire, in end will world the say Some
Line 952 ⟶ 2,415:
linesWithReversedWords =
StringJoin[Riffle[#, " "]] & /@ reversedWordArray;
finaloutput = StringJoin[Riffle[#, "\n"]] & @ linesWithReversedWords</
{{out}}
<pre>------------ Fire and Ice ----------
Line 965 ⟶ 2,428:
----------------------- Robert Frost</pre>
=={{header|MATLAB}} / {{header|Octave}}==
<
testStr = {'---------- Ice and Fire ------------' ; ...
'' ; ...
Line 990 ⟶ 2,453:
strOut = strtrim(sprintf('%s ', words{end:-1:1}));
end
end</
{{out}}
<pre>------------ Fire and Ice ----------
Line 1,002 ⟶ 2,465:
----------------------- Robert Frost</pre>
=={{header|MAXScript}}==
<syntaxhighlight lang="maxscript">
-- MAXScript : Reverse words in a string : N.H. 2019
--
(
text = stringstream "---------- Ice and Fire ------------\n\nfire, in end will world the say Some\nice. in say Some\ndesire of tasted I've what From\nfire. favor who those with hold I\n\n... elided paragraph last ...\n\nFrost Robert -----------------------\n"
clearListener()
seek text 0
while eof text == false do
(
nextLine = (readLine text)
if nextLine == "" then
(
print ""
continue
) -- end of if
revLine = ""
eachWord = filterString nextLine " "
for k = eachWord.count to 1 by -1 do
(
revLine = revLine + eachWord[k]
-- Only add space between words not at the end of line
if k != 1 then revLine = revLine + " "
) -- end of for k
print revLine
) -- end of while eof
)
</syntaxhighlight>
{{out}}
Output to MAXScript Listener:
<pre>"------------ Fire and Ice ----------"
""
"Some say the world will end in fire,"
"Some say in ice."
"From what I've tasted of desire"
"I hold with those who favor fire."
""
"... last paragraph elided ..."
""
"----------------------- Robert Frost"</pre>
=={{header|MiniScript}}==
<syntaxhighlight lang="miniscript">lines = ["==========================================",
"| ---------- Ice and Fire ------------ |",
"| |",
"| fire, in end will world the say Some |",
"| ice. in say Some |",
"| desire of tasted I've what From |",
"| fire. favor who those with hold I |",
"| |",
"| ... elided paragraph last ... |",
"| |",
"| Frost Robert ----------------------- |",
"=========================================="]
for line in lines
oldLine = line.split
newLine = []
while oldLine
// the line below line retains the outer box format
newLine.push oldLine.pop
// alternate format, replace above line with below two lines below to strip all superfluous spaces
// word = oldLine.pop
// if word != "" then newLine.push word
end while
print newLine.join
end for</syntaxhighlight>
{{out}}
<pre>
==========================================
| ------------ Fire and Ice ---------- |
| |
| Some say the world will end in fire, |
| Some say in ice. |
| From what I've tasted of desire |
| I hold with those who favor fire. |
| |
| ... last paragraph elided ... |
| |
| ----------------------- Robert Frost |
==========================================
</pre>
=={{header|Modula-2}}==
{{trans|Pascal}}
{{works with|ADW Modula-2|any (Compile with the linker option ''Console Application'').}}
<syntaxhighlight lang="modula2">
MODULE ReverseWords;
FROM STextIO IMPORT
WriteString, WriteLn;
FROM Strings IMPORT
Assign, Concat, Append;
CONST
NL = CHR(10);
Sp = ' ';
Txt = "---------- Ice and Fire -----------" + NL +
NL +
"fire, in end will world the say Some" + NL +
"ice. in say Some" + NL +
"desire of tasted I've what From" + NL +
"fire. favor who those with hold I" + NL +
NL +
"... elided paragraph last ..." + NL +
NL +
"Frost Robert -----------------------" + NL;
TYPE
String400 = ARRAY [0 .. 399] OF CHAR;
PROCEDURE AddWord(Source: ARRAY OF CHAR; VAR INOUT Destination: ARRAY OF CHAR);
VAR
R: String400;
BEGIN
Concat(Source, Sp, R);
Append(Destination, R);
Assign(R, Destination);
END AddWord;
VAR
I: CARDINAL;
SingleWord, CurrentLine: String400;
C: CHAR;
BEGIN
SingleWord := "";
CurrentLine := "";
FOR I := 0 TO HIGH(Txt) DO
C := Txt[I];
CASE C OF
Sp:
AddWord(SingleWord, CurrentLine);
SingleWord := ""; |
NL:
AddWord(SingleWord, CurrentLine);
WriteString(CurrentLine);
WriteLn;
SingleWord := "";
CurrentLine := ""; |
ELSE
Append(C, SingleWord);
END;
END;
END ReverseWords.
</syntaxhighlight>
=={{header|Nanoquery}}==
<syntaxhighlight lang="nanoquery">def reverse_words(string)
tokens = split(string, " ")
if len(tokens) = 0
return ""
end
ret_str = ""
for i in range(len(tokens) - 1, 0)
ret_str += tokens[i] + " "
end
return ret_str.substring(0, len(ret_str) - 1)
end
data = "---------- Ice and Fire ------------\n" +\
" \n" +\
"fire, in end will world the say Some\n" +\
"ice. in say Some \n" +\
"desire of tasted I've what From \n" +\
"fire. favor who those with hold I \n" +\
" \n" +\
"... elided paragraph last ... \n" +\
"Frost Robert -----------------------\n"
for line in split(data, "\n")
println reverse_words(line)
end</syntaxhighlight>
{{out}}
<pre>------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</pre>
=={{header|Nial}}==
{{works with|Q'Nial Version 6.3}}
<syntaxhighlight lang="nial">
# Define a function to convert a list of strings to a single string.
join is rest link (' ' eachboth link)
iterate (write join reverse (' ' string_split)) \
\
\
'------------ Eldorado ----------' \
'' \
'... here omitted lines ...' \
'' \
'Mountains the "Over' \
'Moon, the Of' \
'Shadow, the of Valley the Down' \
'ride," boldly Ride,' \
'replied,--- shade The' \
'Eldorado!" for seek you "If' \
'' \
'Poe Edgar -----------------------'
</syntaxhighlight>
{{out}}
<pre>
---------- Eldorado ------------
... lines omitted here ...
"Over the Mountains
Of the Moon,
Down the Valley of the Shadow,
Ride, boldly ride,"
The shade replied,---
"If you seek for Eldorado!"
----------------------- Edgar Poe
</pre>
=={{header|Nim}}==
<
let text = """---------- Ice and Fire ------------
Line 1,030 ⟶ 2,719:
for line in text.splitLines():
echo line.split(' ').reversed().join(" ")</
{{out}}
<pre>------------ Fire and Ice ----------
Line 1,044 ⟶ 2,733:
=={{header|Objeck}}==
<
class Reverselines {
Line 1,072 ⟶ 2,761:
};
}
}</
{{out}}
Line 1,087 ⟶ 2,776:
=={{header|OCaml}}==
<
let input = ["---------- Ice and Fire ------------";
"";
Line 1,102 ⟶ 2,791:
let reversed = List.map List.rev splitted in
let final = List.map (String.concat " ") reversed in
List.iter print_endline final;;</
Sample usage
<pre>$ ocaml reverse.ml
Line 1,119 ⟶ 2,808:
=={{header|Oforth}}==
<
s words reverse unwords ;
"---------- Ice and Fire ------------" revWords println
" " revWords println
"Frost Robert -----------------------" revWords println ;</syntaxhighlight>
{{out}}
<pre>
>reverseWords
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
Line 1,149 ⟶ 2,836:
----------------------- Robert Frost
ok
</pre>
=={{header|Pascal}}==
Free Pascal 3.0.0
<syntaxhighlight lang="pascal">program Reverse_words(Output);
{$H+}
const
nl = chr(10); // Linefeed
sp = chr(32); // Space
TXT =
'---------- Ice and Fire -----------'+nl+
nl+
'fire, in end will world the say Some'+nl+
'ice. in say Some'+nl+
'desire of tasted I''ve what From'+nl+
'fire. favor who those with hold I'+nl+
nl+
'... elided paragraph last ...'+nl+
nl+
'Frost Robert -----------------------'+nl;
var
I : integer;
ew, lw : ansistring;
c : char;
function addW : ansistring;
var r : ansistring = '';
begin
r := ew + sp + lw;
ew := '';
addW := r
end;
begin
ew := '';
lw := '';
for I := 1 to strlen(TXT) do
begin
c := TXT[I];
case c of
sp : lw := addW;
nl : begin writeln(addW); lw := '' end;
else ew := ew + c
end;
end;
readln;
end.</syntaxhighlight>
{{out}}
<pre>----------- Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</pre>
Another version (tested with FPC 3.2.2)
<syntaxhighlight lang="pascal">
program reverse_words;
{$mode objfpc}{$h+}
uses
SysUtils;
function Reverse(a: TStringArray): TStringArray;
var
I, J: SizeInt;
t: Pointer;
begin
I := 0;
J := High(a);
while I < J do begin
t := Pointer(a[I]);
Pointer(a[I]) := Pointer(a[J]);
Pointer(a[J]) := t;
Inc(I);
Dec(J);
end;
Result := a;
end;
const
Input =
'---------- Ice and Fire -----------' + LineEnding +
'' + LineEnding +
'fire, in end will world the say Some' + LineEnding +
'ice. in say Some' + LineEnding +
'desire of tasted I''ve what From' + LineEnding +
'fire. favor who those with hold I' + LineEnding +
'' + LineEnding +
'... elided paragraph last ...' + LineEnding +
'' + LineEnding +
'Frost Robert -----------------------' + LineEnding;
var
Line: string;
begin
for Line in Input.Split([LineEnding], TStringSplitOptions.ExcludeLastEmpty) do
WriteLn(string.Join(' ', Reverse(Line.Split([' ']))));
end.
</syntaxhighlight>
=={{header|Perl}}==
<
__DATA__
---------- Ice and Fire ------------
Line 1,164 ⟶ 2,957:
Frost Robert -----------------------
</syntaxhighlight>
=={{header|
<!--<syntaxhighlight lang="phix">(phixonline)-->
<span style="color: #008080;">with</span> <span style="color: #008080;">javascript_semantics</span>
<span style="color: #008080;">constant</span> <span style="color: #000000;">test</span><span style="color: #0000FF;">=</span><span style="color: #008000;">"""
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
"""</span>
<span style="color: #004080;">sequence</span> <span style="color: #000000;">lines</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #000000;">test</span><span style="color: #0000FF;">,</span><span style="color: #008000;">'\n'</span><span style="color: #0000FF;">)</span>
<span style="color: #008080;">for</span> <span style="color: #000000;">i</span><span style="color: #0000FF;">=</span><span style="color: #000000;">1</span> <span style="color: #008080;">to</span> <span style="color: #7060A8;">length</span><span style="color: #0000FF;">(</span><span style="color: #000000;">lines</span><span style="color: #0000FF;">)</span> <span style="color: #008080;">do</span>
<span style="color: #000000;">lines</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">]</span> <span style="color: #0000FF;">=</span> <span style="color: #7060A8;">join</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">reverse</span><span style="color: #0000FF;">(</span><span style="color: #7060A8;">split</span><span style="color: #0000FF;">(</span><span style="color: #000000;">lines</span><span style="color: #0000FF;">[</span><span style="color: #000000;">i</span><span style="color: #0000FF;">])))</span>
<span style="color: #008080;">end</span> <span style="color: #008080;">for</span>
<span style="color: #7060A8;">puts</span><span style="color: #0000FF;">(</span><span style="color: #000000;">1</span><span style="color: #0000FF;">,</span><span style="color: #7060A8;">join</span><span style="color: #0000FF;">(</span><span style="color: #000000;">lines</span><span style="color: #0000FF;">,</span><span style="color: #008000;">"\n"</span><span style="color: #0000FF;">))</span>
<!--</syntaxhighlight>-->
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Line 1,179 ⟶ 2,991:
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Phixmonti}}==
<syntaxhighlight lang="phixmonti">include ..\Utilitys.pmt
"---------- Ice and Fire ------------"
""
"fire, in end will world the say Some"
"ice. in say Some"
"desire of tasted I've what From"
"fire. favor who those with hold I"
""
"... elided paragraph last ..."
""
"Frost Robert -----------------------"
stklen tolist
len for var i
i get split reverse i set
endfor
len for
get len dup if
for get print " " print endfor
else drop endif
drop nl
endfor</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|PHP}}==
<syntaxhighlight lang="php">
<?php
function strInv ($string) {
$str_inv = '' ;
for ($i=0,$s=count($string);$i<$s;$i++){
$str_inv .= implode(' ',array_reverse(explode(' ',$string[$i])));
$str_inv .= '<br>';
}
return $str_inv;
}
$string[] = "---------- Ice and Fire ------------";
$string[] = "";
$string[] = "fire, in end will world the say Some";
$string[] = "ice. in say Some";
$string[] = "desire of tasted I've what From";
$string[] = "fire. favor who those with hold I";
$string[] = "";
$string[] = "... elided paragraph last ...";
$string[] = "";
$string[] = "Frost Robert ----------------------- ";
echo strInv($string);</syntaxhighlight>
'''Output''':
<syntaxhighlight lang="shell">------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</syntaxhighlight>
=={{header|PicoLisp}}==
<syntaxhighlight lang="picolisp">
(in "FireIce.txt"
(until (eof)
(prinl (glue " " (flip (split (line) " "))))))
</syntaxhighlight>
{{Out}}
Same as anybody else.
=={{header|Pike}}==
<syntaxhighlight lang="pike">string story = #"---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------";
foreach(story/"\n", string line)
write("%s\n", reverse(line/" ")*" ");
</syntaxhighlight>
=={{header|PL/I}}==
<
declare (s, reverse) character (50) varying;
declare (i, j) fixed binary;
Line 1,221 ⟶ 3,133:
put edit ('---> ', reverse) (col(40), 2 A);
end;
end rev;</
{{out}}
<pre>
Line 1,234 ⟶ 3,146:
--->
Frost Robert ----------------------- ---> ----------------------- Robert Frost
</pre>
=={{header|PowerShell}}==
{{works with|PowerShell|4.0}}
<syntaxhighlight lang="powershell">
Function Reverse-Words($lines) {
$lines | foreach {
$array = $PSItem.Split(' ')
$array[($array.Count-1)..0] -join ' '
}
}
$lines =
"---------- Ice and Fire ------------",
"",
"fire, in end will world the say Some",
"ice. in say Some",
"desire of tasted I've what From",
"fire. favor who those with hold I",
"",
"... elided paragraph last ...",
"",
"Frost Robert -----------------------"
Reverse-Words($lines)
</syntaxhighlight>
'''output''' :
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|PureBasic}}==
<syntaxhighlight lang="purebasic">a$ = "---------- Ice and Fire ------------" +#CRLF$+
" " +#CRLF$+
"fire, in end will world the say Some" +#CRLF$+
"ice. in say Some " +#CRLF$+
"desire of tasted I've what From " +#CRLF$+
"fire. favor who those with hold I " +#CRLF$+
" " +#CRLF$+
"... elided paragraph last ... " +#CRLF$+
" " +#CRLF$+
"Frost Robert -----------------------" +#CRLF$
a$ = "Hey you, Bub! " +#CRLF$+#CRLF$+ a$
OpenConsole()
For p1=1 To CountString(a$,#CRLF$)
b$=StringField(a$,p1,#CRLF$) : c$=""
For p2=1 To CountString(b$,Chr(32))+1
c$=StringField(b$,p2,Chr(32))+Space(1)+c$
Next
PrintN(LSet(b$,36,Chr(32))+" ---> "+Trim(c$))
Next
Input()
</syntaxhighlight>
{{out}}
<pre>
Hey you, Bub! ---> Bub! you, Hey
--->
---------- Ice and Fire ------------ ---> ------------ Fire and Ice ----------
--->
fire, in end will world the say Some ---> Some say the world will end in fire,
ice. in say Some ---> Some say in ice.
desire of tasted I've what From ---> From what I've tasted of desire
fire. favor who those with hold I ---> I hold with those who favor fire.
--->
... elided paragraph last ... ---> ... last paragraph elided ...
--->
Frost Robert ----------------------- ---> ----------------------- Robert Frost
</pre>
=={{header|Python}}==
<
---------- Ice and Fire ------------
Line 1,249 ⟶ 3,239:
Frost Robert -----------------------'''
for line in text.split('\n'): print(' '.join(line.split()[::-1]))</
'''Output''':
<
Some say the world will end in fire,
Line 1,262 ⟶ 3,252:
... last paragraph elided ...
----------------------- Robert Frost</
=={{header|Quackery}}==
<syntaxhighlight lang="quackery"> ' [ $ " ---------- Ice and Fire ------------ "
$ ""
$ " fire, in end will world the say Some "
$ " ice. in say Some "
$ " desire of tasted I've what From "
$ " fire. favor who those with hold I "
$ ""
$ " ... elided paragraph last ... "
$ ""
$ " Frost Robert ----------------------- " ]
witheach
[ do nest$ reverse
witheach
[ echo$ sp ]
cr ]</syntaxhighlight>
{{out}}
<pre>------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost </pre>
=={{header|R}}==
<syntaxhighlight lang="r">
whack <- function(s) {
paste( rev( unlist(strsplit(s, " "))), collapse=' ' ) }
poem <- unlist( strsplit(
'------------ Eldorado ----------
... here omitted lines ...
Mountains the "Over
Moon, the Of
Shadow, the of Valley the Down
ride," boldly Ride,
replied,--- shade The
Eldorado!" for seek you "If
Poe Edgar -----------------------', "\n"))
for (line in poem) cat( whack(line), "\n" )
</syntaxhighlight>
{{out}}
<pre>
---------- Eldorado ------------
... lines omitted here ...
"Over the Mountains
Of the Moon,
Down the Valley of the Shadow,
Ride, boldly ride,"
The shade replied,---
"If you seek for Eldorado!"
----------------------- Edgar Poe
</pre>
As a dangerous stunt, let's redefine "<tt>{</tt>".
(Everything that happens in R is a function-call.)
<syntaxhighlight lang="r">
> `{` <- function(s) rev(unlist(strsplit(s, " ")))
> {"one two three four five"}
[1] "five" "four" "three" "two" "one"
</syntaxhighlight>
You had better restart your REPL after trying this.
=={{header|Racket}}==
<
(require racket/string)
Line 1,292 ⟶ 3,364:
(begin (displayln (split-reverse l))
(loop (read-line poem-port))))))
</syntaxhighlight>
In Wheeler-readable/sweet notation (https://readable.sourceforge.io/) as implemented by Asumu Takikawa (https://github.com/takikawa/sweet-racket):
<syntaxhighlight lang="racket">
#lang sweet-exp racket/base
require racket/string
define split-reverse(str)
string-join $ reverse $ string-split str
define poem
"---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------"
let
\\
poem-port $ open-input-string poem
let loop
\\
l $ read-line poem-port
unless eof-object?(l)
begin
displayln split-reverse(l)
loop read-line(poem-port)
</syntaxhighlight>
=={{header|Raku}}==
(formerly Perl 6)
We'll read input from stdin
<syntaxhighlight lang="raku" line>say ~.words.reverse for lines</syntaxhighlight>
{{out}}
<pre>------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</pre>
=={{header|Red}}==
<syntaxhighlight lang="red">Red []
foreach line
split
{---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------} newline [
print reverse split line " "
]
</syntaxhighlight>
=={{header|REXX}}==
===natural order===
This REXX version process the words in a natural order (first to last).
<syntaxhighlight lang="rexx">/*REXX program reverses the order of tokens in a string (but not the letters).*/
@.=; @.1 = "---------- Ice and Fire ------------"
@.2 = ' '
@.
@.4 = "ice. in say Some"
@.5 = "desire of tasted I've what From"
@.6 = "fire. favor who those with hold I"
@.7 = ' '
@.8 = "... elided paragraph last ..."
@.9 = ' '
@.10 = "Frost Robert -----------------------"
do
$=
say $ /*display the newly constructed line. */
end /*j*/ /*stick a fork in it, we're all done. */</syntaxhighlight>
'''output''' when using the (internal text) ten lines of input:
<pre>
------------ Fire and Ice ----------
Line 1,328 ⟶ 3,469:
</pre>
==
This REXX version process the words in reverse order (last to first).
<syntaxhighlight lang="rexx">/*REXX program reverses the order of tokens in a string (but not the letters).*/
@.=; @.1 = "---------- Ice and Fire ------------"
@.2 = ' '
@.3 = "fire, in end will world the say Some"
@.4 = "ice. in say Some"
@.5 = "desire of tasted I've what From"
@.6 = "fire. favor who those with hold I"
@.7 = ' '
@.8 = "... elided paragraph last ..."
@.9 = ' '
@.10 = "Frost Robert -----------------------"
do j=1 while @.j\=='' /*process each of the 10 lines of poem.*/
$= /*nullify the $ string (the new line)*/
do k=words(@.j) to 1 by -1 /*process each word in a @.j string.*/
$=$ word(@.j,k) /*append a word to the new line ($). */
end /*k*/ /* [↑] process last word to first word*/
say $ /*display the newly constructed line. */
end /*j*/ /*stick a fork in it, we're all done. */</syntaxhighlight>
'''output''' is the same as the 1<sup>st</sup> REXX version. <br><br>
=={{header|Ring}}==
<syntaxhighlight lang="ring">
aList = str2list("
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
")
aList = str2list(cStr)
for x in aList
x2 = substr(x," ",nl) alist2 = str2list(x2) aList2 = reverse(aList2)
for y in aList2 see y + " " next see nl
next
</syntaxhighlight>
Output
<syntaxhighlight lang="ring">
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</syntaxhighlight>
=={{header|RPL}}==
« { }
'''WHILE''' OVER " " POS '''REPEAT'''
LASTARG → sep
« OVER 1 sep SUB +
SWAP sep 1 + OVER SIZE SUB SWAP
»
'''END'''
SWAP + REVLIST
'''IFERR''' ∑LIST '''THEN''' 1 GET '''END'''
» '<span style="color:blue">REVWORDS</span>' STO
{ "---------- Ice and Fire ------------" "" "fire, in end will world the say Some" "ice. in say Some" "desire of tasted I've what From" "fire. favor who those with hold I" "" "... elided paragraph last ..." "" "Frost Robert -----------------------" }
1 « <span style="color:blue">REVWORDS</span> » DOLIST
{{out}}
<pre>
1: { "------------ Fire and Ice ----------"
""
"Some say the world will end in fire,"
"Some say in ice."
"From what I've tasted of desire"
"I hold with those who favor fire."
""
"... last paragraph elided ..."
""
"----------------------- Robert Frost" }
</pre>
=={{header|Ruby}}==
<syntaxhighlight lang="ruby">puts <<EOS
---------- Ice and Fire ------------
Line 1,345 ⟶ 3,569:
Frost Robert -----------------------
EOS
.each_line.map {|line| line.split.reverse.join(' ')}</syntaxhighlight>
Output the same as everyone else's.
=={{header|Run BASIC}}==
<syntaxhighlight lang="runbasic">for i = 1 to 10
read string$
j = 1
r$ = ""
while word$(string$,j) <> ""
r$ = word$(string$,j) + " " + r$
j = j + 1
WEND
print r$
next
end
data "---------- Ice and Fire ------------"
data ""
data "fire, in end will world the say Some"
data "ice. in say Some"
data "desire of tasted I've what From"
data "fire. favor who those with hold I"
data ""
data "... elided paragraph last ..."
data ""
data "Frost Robert -----------------------"</syntaxhighlight>
Output:
<pre>------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I''ve tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost </pre>
=={{header|Rust}}==
<syntaxhighlight lang="rust">const TEXT: &'static str =
"---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------";
fn main() {
println!("{}",
TEXT.lines() // Returns iterator over lines
.map(|line| // Applies closure to each item in iterator (for each line)
line.split_whitespace() // Returns iterator of words
.rev() // Reverses iterator of words
.collect::<Vec<_>>() // Collects words into Vec<&str>
.join(" ")) // Convert vector of words back into line
.collect::<Vec<_>>() // Collect lines into Vec<String>
.join("\n")); // Concatenate lines into String
}</syntaxhighlight>
=={{header|S-lang}}==
<syntaxhighlight lang="s-lang">variable ln, in =
["---------- Ice and Fire ------------",
"fire, in end will world the say Some",
"ice. in say Some",
"desire of tasted I've what From",
"fire. favor who those with hold I",
"",
"... elided paragraph last ...",
"",
"Frost Robert -----------------------"];
foreach ln (in) {
ln = strtok(ln, " \t");
array_reverse(ln);
() = printf("%s\n", strjoin(ln, " "));
}</syntaxhighlight>
{{out}}
<pre>------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</pre>
=={{header|Scala}}==
{{works with|Scala|2.9.x}}
<
"""| ---------- Ice and Fire ------------
Line 1,369 ⟶ 3,680:
.foreach{println}
}</
{{out}}
Line 1,388 ⟶ 3,699:
{{works with|Gauche Scheme}}
<syntaxhighlight lang="scheme">
(for-each
(lambda (s) (print (string-join (reverse (string-split s #/ +/)))))
Line 1,403 ⟶ 3,714:
Frost Robert -----------------------"
#/[ \r]*\n[ \r]*/))
</syntaxhighlight>
<b>Output:</b>
<pre>
Line 1,417 ⟶ 3,728:
----------------------- Robert Frost
</pre>
=={{header|sed}}==
<syntaxhighlight lang="sed">#!/usr/bin/sed -f
G
:loop
s/^[[:space:]]*\([^[:space:]][^[:space:]]*\)\(.*\n\)/\2 \1/
t loop
s/^[[:space:]]*//</syntaxhighlight>
=={{header|Seed7}}==
<
const array string: lines is [] (
Line 1,446 ⟶ 3,766:
writeln;
end for;
end func;</
{{out}}
Line 1,460 ⟶ 3,780:
----------------------- Robert Frost
</pre>
=={{header|SenseTalk}}==
<syntaxhighlight lang="sensetalk">set poem to {{
---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------
}}
repeat with each line in poem
put (each word of it) reversed joined by space
end repeat
</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Sidef}}==
<
__DATA__
Line 1,475 ⟶ 3,827:
... elided paragraph last ...
Frost Robert -----------------------</
=={{header|Smalltalk}}==
<
poem := '---------- Ice and Fire ------------
Line 1,491 ⟶ 3,843:
(poem lines collect: [ :line | ((line splitOn: ' ') reverse) joinUsing: ' ' ]) joinUsing: (String cr).
</syntaxhighlight>
{{out}}
Line 1,511 ⟶ 3,863:
This only considers space as the word separator, not tabs, form feeds or any other sort of whitespace. (This, however, turns out not to be an issue with the example input.)
<
fire, in end will world the say Some
Line 1,530 ⟶ 3,882:
print();
});</
=={{header|Standard ML}}==
<syntaxhighlight lang="sml">val lines = [
" ---------- Ice and Fire ------------ ",
" ",
" fire, in end will world the say Some ",
" ice. in say Some ",
" desire of tasted I've what From ",
" fire. favor who those with hold I ",
" ",
" ... elided paragraph last ... ",
" ",
" Frost Robert ----------------------- "
]
val revWords = String.concatWith " " o rev o String.tokens Char.isSpace
val () = app (fn line => print (revWords line ^ "\n")) lines</syntaxhighlight>
=={{header|Swift}}==
<syntaxhighlight lang="swift">import Foundation
// convenience extension for better clarity
extension String {
var lines: [String] {
get {
return self.componentsSeparatedByCharactersInSet(NSCharacterSet.newlineCharacterSet())
}
}
var words: [String] {
get {
return self.componentsSeparatedByCharactersInSet(NSCharacterSet.whitespaceCharacterSet())
}
}
}
let input = "---------- Ice and Fire ------------\n\nfire, in end will world the say Some\nice. in say Some\ndesire of tasted I've what From\nfire. favor who those with hold I\n\n... elided paragraph last ...\n\nFrost Robert -----------------------\n"
let output = input.lines.map { $0.words.reverse().joinWithSeparator(" ") }.joinWithSeparator("\n")
print(output)</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Tailspin}}==
<syntaxhighlight lang="tailspin">
def input: ['---------- Ice and Fire ------------',
'',
'fire, in end will world the say Some',
'ice. in say Some',
'desire of tasted I''ve what From',
'fire. favor who those with hold I',
'',
'... elided paragraph last ...',
'',
'Frost Robert -----------------------']
;
composer words
[ <word>* ]
rule word: <~WS> <WS>?
end words
$input... -> '$ -> words -> $(last..first:-1)...;
' -> !OUT::write
</syntaxhighlight>
=={{header|Tcl}}==
<
"---------- Ice and Fire ------------"
""
Line 1,549 ⟶ 3,978:
# This would also work for data this simple:
### puts [lreverse $line]
}</
{{out}}
<pre>
Line 1,565 ⟶ 3,994:
Alternatively…
{{works with|Tcl|8.6}}
<
=={{header|TXR}}==
Run from command line:
<syntaxhighlight lang
'''Solution:'''
<
@ (some)
@(coll)@{words /[^ ]+/}@(end)
Line 1,584 ⟶ 4,013:
@ (end)
@(end)
</syntaxhighlight>
New line should be present after the last @(end) terminating vertical definition.
i.e.
<
[EOF]</
not
<syntaxhighlight lang
=={{header|UNIX Shell}}==
{{works with|bash}}
<
for ((i=${#words[@]}-1; i>=0; i--)); do
printf "%s " "${words[i]}"
Line 1,610 ⟶ 4,039:
Frost Robert -----------------------
END</
{{works with|ksh}}
Same as above, except change <
=={{header|VBA}}==
<syntaxhighlight lang="vb">
Option Explicit
Sub Main()
Dim Lines(9) As String, i&
'Input
Lines(0) = "------------- Ice And Fire -------------"
Lines(1) = ""
Lines(2) = "fire, in end will world the say Some"
Lines(3) = "ice. in say Some"
Lines(4) = "desire of tasted I've what From"
Lines(5) = "fire. favor who those with hold I"
Lines(6) = ""
Lines(7) = "... elided paragraph last ..."
Lines(8) = ""
Lines(9) = "Frost Robert -----------------------"
'Output
For i = 0 To 9
Debug.Print ReverseLine(Lines(i), " ")
Next
End Sub
Private Function ReverseLine(Line As String, Optional Separat As String) As String
Dim T, R, i&, j&, deb&, fin&
If Len(Line) = 0 Then
ReverseLine = vbNullString
Else
If Separat = "" Then Separat = " "
T = Split(Line, Separat)
ReDim R(UBound(T)): j = LBound(T)
deb = UBound(T): fin = deb / 2
For i = deb To fin Step -1
R(j) = T(i)
R(i) = T(j)
j = j + 1
Next i
ReverseLine = Join(R, Separat)
End If
End Function</syntaxhighlight>
{{Out}}
<pre>------------- Fire And Ice -------------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost</pre>
=={{header|VBScript}}==
<syntaxhighlight lang="vb">
Option Explicit
Dim objFSO, objInFile, objOutFile
Dim srcDir, line
Set objFSO = CreateObject("Scripting.FileSystemObject")
srcDir = objFSO.GetParentFolderName(WScript.ScriptFullName) & "\"
Set objInFile = objFSO.OpenTextFile(srcDir & "In.txt",1,False,0)
Set objOutFile = objFSO.OpenTextFile(srcDir & "Out.txt",2,True,0)
Do Until objInFile.AtEndOfStream
line = objInFile.ReadLine
If line = "" Then
objOutFile.WriteLine ""
Else
objOutFile.WriteLine Reverse_String(line)
End If
Loop
Function Reverse_String(s)
Dim arr, i
arr = Split(s," ")
For i = UBound(arr) To LBound(arr) Step -1
If arr(i) <> "" Then
If i = UBound(arr) Then
Reverse_String = Reverse_String & arr(i)
Else
Reverse_String = Reverse_String & " " & arr(i)
End If
End If
Next
End Function
objInFile.Close
objOutFile.Close
Set objFSO = Nothing
</syntaxhighlight>
{{Out}}
Output written to a file.
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|V (Vlang)}}==
<syntaxhighlight lang="v (vlang)">fn main() {
mut n := [
"---------- Ice and Fire ------------",
" ",
"fire, in end will world the say Some",
"ice. in say Some ",
"desire of tasted I've what From ",
"fire. favor who those with hold I ",
" ",
"... elided paragraph last ... ",
" ",
"Frost Robert -----------------------",
]
for i, s in n {
mut t := s.fields() // tokenize
// reverse
last := t.len - 1
for j, k in t[..t.len/2] {
t[j], t[last-j] = t[last-j], k
}
n[i] = t.join(" ")
}
// display result
for t in n {
println(t)
}
}</syntaxhighlight>
'''Simpler version:'''
<syntaxhighlight lang="vlang">mut n := [
"---------- Ice and Fire ------------",
" ",
"fire, in end will world the say Some",
"ice. in say Some ",
"desire of tasted I've what From ",
"fire. favor who those with hold I ",
" ",
"... elided paragraph last ... ",
" ",
"Frost Robert -----------------------",
]
println(
n.map(
it.fields().reverse().join(' ').trim_space()
).join('\n')
)</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Wren}}==
<syntaxhighlight lang="wren">var lines = [
"---------- Ice and Fire ------------",
" ",
"fire, in end will world the say Some",
"ice. in say Some ",
"desire of tasted I've what From ",
"fire. favor who those with hold I ",
" ",
"... elided paragraph last ... ",
" ",
"Frost Robert -----------------------"
]
for (line in lines) {
var tokens = line.trim().split(" ")
tokens = tokens[-1..0]
System.print(tokens.join(" "))
}</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|XBS}}==
<syntaxhighlight lang="xbs">func revWords(x:string=""){
(x=="")&=>send x+"<br>";
set sp = x::split(" ");
send sp::reverse()::join(" ");
}
set lines:array=[
"---------- Ice and Fire ------------",
"",
"fire, in end will world the say Some",
"ice. in say Some",
"desire of tasted I've what From",
"fire. favor who those with hold I",
"",
"... elided paragraph last ...",
"",
"Frost Robert -----------------------",
];
foreach(v of lines){
log(revWords(v));
}</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|XPL0}}==
<syntaxhighlight lang="xpl0">string 0;
def LF=$0A, CR=$0D;
proc Reverse(Str, Len); \Reverse order of chars in string
char Str; int Len;
int I, J, T;
[I:= 0;
J:= Len-1;
while I < J do
[T:= Str(I); Str(I):= Str(J); Str(J):= T;
I:= I+1; J:= J-1;
];
];
char Str;
int I, LineBase, WordBase;
[Str:=
"---------- Ice and Fire ------------
fire, in end will world the say Some
ice. in say Some
desire of tasted I've what From
fire. favor who those with hold I
... elided paragraph last ...
Frost Robert -----------------------";
I:= 0;
repeat LineBase:= I;
loop [WordBase:= I;
repeat I:= I+1 until Str(I) <= $20;
Reverse(@Str(WordBase), I-WordBase);
if Str(I)=CR or Str(I)=LF or Str(I)=0 then quit;
I:= I+1; \skip space
];
Reverse(@Str(LineBase), I-LineBase);
while Str(I)=CR or Str(I)=LF do I:= I+1;
until Str(I) = 0;
Text(0, Str);
CrLf(0);
]</syntaxhighlight>
{{out}}
<pre>
------------ Fire and Ice ----------
Some say the world will end in fire,
Some say in ice.
From what I've tasted of desire
I hold with those who favor fire.
... last paragraph elided ...
----------------------- Robert Frost
</pre>
=={{header|Yabasic}}==
<syntaxhighlight lang="yabasic">data " ---------- Ice and Fire ------------ "
data " "
data " fire, in end will world the say Some "
data " ice. in say Some "
data " desire of tasted I've what From "
data " fire. favor who those with hold I "
data " "
data " ... elided paragraph last ... "
data " "
data " Frost Robert ----------------------- "
data ""
dim w$(1)
do
read l$
if l$ <> "" then
n = token(l$, w$(), " ")
for i = n to 1 step -1
print w$(i), " ";
next
print
else
break
end if
loop</syntaxhighlight>
=={{header|zkl}}==
<
#<<<
"---------- Ice and Fire ------------
Line 1,631 ⟶ 4,391:
text.pump(11,Data,fcn(s){ // process stripped lines
s.split(" ").reverse().concat(" ") + "\n" })
.text.print();</
{{out}}
<pre>
| |||