Find words whose first and last three letters are equal: Difference between revisions
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=={{header|F_Sharp|F#}}== |
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<lang fsharp> |
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// First and last three letters are equal. Nigel Galloway: February 18th., 2021 |
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let fN g=if String.length g<6 then false else g.[..2]=g.[g.Length-3..] |
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seq{use n=System.IO.File.OpenText("unixdict.txt") in while not n.EndOfStream do yield n.ReadLine()}|>Seq.filter fN|>Seq.iter(printfn "%s") |
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</lang> |
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{{out}} |
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<pre> |
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antiperspirant |
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calendrical |
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einstein |
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hotshot |
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murmur |
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oshkosh |
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tartar |
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testes |
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</pre> |
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=={{header|Factor}}== |
=={{header|Factor}}== |
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<lang factor>USING: io io.encodings.ascii io.files kernel math sequences ; |
<lang factor>USING: io io.encodings.ascii io.files kernel math sequences ; |
Revision as of 15:17, 18 February 2021
- Task
Use the dictionary unixdict.txt
Find the words which first and last three letters are equals.
The length of any word shown should have a length > 5.
- Metrics
- Counting
- Word frequency
- Letter frequency
- Jewels and stones
- I before E except after C
- Bioinformatics/base count
- Count occurrences of a substring
- Count how many vowels and consonants occur in a string
- Remove/replace
- XXXX redacted
- Conjugate a Latin verb
- Remove vowels from a string
- String interpolation (included)
- Strip block comments
- Strip comments from a string
- Strip a set of characters from a string
- Strip whitespace from a string -- top and tail
- Strip control codes and extended characters from a string
- Anagrams/Derangements/shuffling
- Word wheel
- ABC problem
- Sattolo cycle
- Knuth shuffle
- Ordered words
- Superpermutation minimisation
- Textonyms (using a phone text pad)
- Anagrams
- Anagrams/Deranged anagrams
- Permutations/Derangements
- Find/Search/Determine
- ABC words
- Odd words
- Word ladder
- Semordnilap
- Word search
- Wordiff (game)
- String matching
- Tea cup rim text
- Alternade words
- Changeable words
- State name puzzle
- String comparison
- Unique characters
- Unique characters in each string
- Extract file extension
- Levenshtein distance
- Palindrome detection
- Common list elements
- Longest common suffix
- Longest common prefix
- Compare a list of strings
- Longest common substring
- Find common directory path
- Words from neighbour ones
- Change e letters to i in words
- Non-continuous subsequences
- Longest common subsequence
- Longest palindromic substrings
- Longest increasing subsequence
- Words containing "the" substring
- Sum of the digits of n is substring of n
- Determine if a string is numeric
- Determine if a string is collapsible
- Determine if a string is squeezable
- Determine if a string has all unique characters
- Determine if a string has all the same characters
- Longest substrings without repeating characters
- Find words which contains all the vowels
- Find words which contains most consonants
- Find words which contains more than 3 vowels
- Find words which first and last three letters are equals
- Find words which odd letters are consonants and even letters are vowels or vice_versa
- Formatting
- Substring
- Rep-string
- Word wrap
- String case
- Align columns
- Literals/String
- Repeat a string
- Brace expansion
- Brace expansion using ranges
- Reverse a string
- Phrase reversals
- Comma quibbling
- Special characters
- String concatenation
- Substring/Top and tail
- Commatizing numbers
- Reverse words in a string
- Suffixation of decimal numbers
- Long literals, with continuations
- Numerical and alphabetical suffixes
- Abbreviations, easy
- Abbreviations, simple
- Abbreviations, automatic
- Song lyrics/poems/Mad Libs/phrases
- Mad Libs
- Magic 8-ball
- 99 Bottles of Beer
- The Name Game (a song)
- The Old lady swallowed a fly
- The Twelve Days of Christmas
- Tokenize
- Text between
- Tokenize a string
- Word break problem
- Tokenize a string with escaping
- Split a character string based on change of character
- Sequences
AWK
<lang AWK>
- syntax: GAWK -f FIND_WORDS_WHICH_FIRST_AND_LAST_THREE_LETTERS_ARE_EQUALS.AWK unixdict.txt
(length($0) >= 6 && substr($0,1,3) == substr($0,length($0)-2,3)) END {
exit(0)
} </lang>
- Output:
antiperspirant calendrical einstein hotshot murmur oshkosh tartar testes
F#
<lang fsharp> // First and last three letters are equal. Nigel Galloway: February 18th., 2021 let fN g=if String.length g<6 then false else g.[..2]=g.[g.Length-3..] seq{use n=System.IO.File.OpenText("unixdict.txt") in while not n.EndOfStream do yield n.ReadLine()}|>Seq.filter fN|>Seq.iter(printfn "%s") </lang>
- Output:
antiperspirant calendrical einstein hotshot murmur oshkosh tartar testes
Factor
<lang factor>USING: io io.encodings.ascii io.files kernel math sequences ;
"unixdict.txt" ascii file-lines [ length 5 > ] filter [ [ 3 head-slice ] [ 3 tail-slice* ] bi = ] filter [ print ] each</lang>
- Output:
antiperspirant calendrical einstein hotshot murmur oshkosh tartar testes
Go
<lang go>package main
import (
"bytes" "fmt" "io/ioutil" "log" "unicode/utf8"
)
func main() {
wordList := "unixdict.txt" b, err := ioutil.ReadFile(wordList) if err != nil { log.Fatal("Error reading file") } bwords := bytes.Fields(b) count := 0 for _, bword := range bwords { s := string(bword) if utf8.RuneCountInString(s) > 5 && (s[0:3] == s[len(s)-3:]) { count++ fmt.Printf("%d: %s\n", count, s) } }
}</lang>
- Output:
1: antiperspirant 2: calendrical 3: einstein 4: hotshot 5: murmur 6: oshkosh 7: tartar 8: testes
Julia
See Alternade_words#Julia for the foreachword function. <lang julia>matchfirstlast3(word, _) = length(word) > 5 && word[1:3] == word[end-2:end] ? word : ""
foreachword("unixdict.txt", matchfirstlast3, numcols=4)</lang>
- Output:
Word source: unixdict.txt antiperspirant calendrical einstein hotshot murmur oshkosh tartar testes
Perl
as one-liner .. <lang perl>// 20210212 Perl programming solution
perl -ne '/(?=^(.{3}).*(\1)$)^.{6,}$/&&print' unixdict.txt
- minor variation
perl -ne 's/(?=^(.{3}).*(\1)$)^.{6,}$/print/e' unixdict.txt</lang>
Phix
<lang Phix>function flaste(string word)
return length(word)>5 and word[1..3]=word[-3..-1]
end function
sequence flastes = filter(get_text("demo/unixdict.txt",GT_LF_STRIPPED),flaste)
printf(1,"%d words: %s\n",{length(flastes),join(shorten(flastes,"",3))})</lang>
- Output:
8 words: antiperspirant calendrical einstein hotshot murmur oshkosh tartar testes
Raku
<lang perl6># 20210210 Raku programming solution
my ( \L, \N, \IN ) = 5, 3, 'unixdict.txt';
for IN.IO.lines { .say if .chars > L and .substr(0,N) eq .substr(*-N,*) } </lang>
- Output:
antiperspirant calendrical einstein hotshot murmur oshkosh tartar testes
REXX
This REXX version doesn't care what order the words in the dictionary are in, nor does it care what
case (lower/upper/mixed) the words are in, the search for the words and vowels is caseless.
The program verifies that the first and last three characters are, indeed, letters.
It also allows the length (3) of the first and last number of letters to be specified, and also the minimum length of the
words to be searched on the command line (CL) as well as specifying the dictionary file identifier.
<lang rexx>/*REXX pgm finds words in an specified dict. which have the same 1st and last 3 letters.*/
parse arg minL many iFID . /*obtain optional arguments from the CL*/
if minL== | minL=="," then minL= 6 /* " " " " " " */
if many== | many=="," then many= 3 /* " " " " " " */
if iFID== | iFID=="," then iFID='unixdict.txt' /* " " " " " " */
do #=1 while lines(iFID)\==0 /*read each word in the file (word=X).*/ x= strip( linein( iFID) ) /*pick off a word from the input line. */ @.#= x /*save: the original case of the word.*/ end /*#*/
- = # - 1 /*adjust word count because of DO loop.*/
say copies('─', 30) # "words in the dictionary file: " iFID finds= 0 /*word count which have matching end. */
/*process all the words that were found*/ do j=1 for #; $= @.j; upper $ /*obtain dictionary word; uppercase it.*/ if length($)<minL then iterate /*Word not long enough? Then skip it.*/ lhs= left($, many); rhs= right($, many) /*obtain the left & right side of word.*/ if \datatype(lhs || rhs, 'U') then iterate /*are the left and right side letters? */ if lhs \== rhs then iterate /*Left side match right side? No, skip*/ finds= finds + 1 /*bump count of only "e" vowels found. */ say right( left(@.j, 30), 40) /*indent original word for readability.*/ end /*j*/ /*stick a fork in it, we're all done. */
say copies('─', 30) finds " words found that the left " many ' letters match the' ,
"right letters which a word has a minimal length of " minL</lang>
- output when using the default inputs:
────────────────────────────── 25104 words in the dictionary file: unixdict.txt antiperspirant calendrical einstein hotshot murmur oshkosh tartar testes ────────────────────────────── 8 words found that the left 3 letters match the right letters which a word has a minimal length of 6
Ring
<lang ring> load "stdlib.ring"
cStr = read("unixdict.txt") wordList = str2list(cStr) num = 0
see "working..." + nl see "Words are:" + nl
ln = len(wordList) for n = ln to 1 step -1
if len(wordList[n]) < 6 del(wordList,n) ok
next
for n = 1 to len(wordList)
if left(wordList[n],3) = right(wordList[n],3) num = num + 1 see "" + num + ". " + wordList[n] + nl ok
next
see "done..." + nl </lang> Output:
working... Words are: 1. antiperspirant 2. calendrical 3. einstein 4. hotshot 5. murmur 6. oshkosh 7. tartar 8. testes done...
Swift
<lang swift>import Foundation
do {
try String(contentsOfFile: "unixdict.txt", encoding: String.Encoding.ascii) .components(separatedBy: "\n") .filter{$0.count > 5 && $0.prefix(3) == $0.suffix(3)} .enumerated() .forEach{print("\($0.0 + 1). \($0.1)")}
} catch {
print(error.localizedDescription)
}</lang>
- Output:
1. antiperspirant 2. calendrical 3. einstein 4. hotshot 5. murmur 6. oshkosh 7. tartar 8. testes
Wren
<lang ecmascript>import "io" for File import "/fmt" for Fmt
var wordList = "unixdict.txt" // local copy var count = 0 File.read(wordList).trimEnd().split("\n").
where { |w| return w.count > 5 && (w[0..2] == w[-3..-1]) }. each { |w| count = count + 1 Fmt.print("$d: $s", count, w) }</lang>
- Output:
1: antiperspirant 2: calendrical 3: einstein 4: hotshot 5: murmur 6: oshkosh 7: tartar 8: testes