Four sides of square
- Task
Fill with 1's the four sides of square. The rest of the square should be filled with 0's.
If you can please use GUI
Four sides of square - image
ALGOL 68
<lang algol68>BEGIN # draw a matrix with 1s on the edges and 0s elsewhere #
# draws a matrix with height and width = n with 1s on the edges #
PROC draw square = ( INT n )VOID:
FOR i TO n DO
FOR j TO n DO
print( ( " ", whole( ABS ( i = 1 OR i = n OR j = 1 OR j = n ), 0 ) ) )
OD;
print( ( newline ) )
OD # draw square # ;
# test the draw square procedure #
draw square( 6 );
print( ( newline ) );
draw square( 7 )
END </lang>
- Output:
1 1 1 1 1 1 1 0 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 1 1 1 1 1 1
C
<lang c>#include <stdio.h>
void hollowMatrix(unsigned int n) {
int i, j;
for (i = 0; i < n; ++i) {
for (j = 0; j < n; ++j) {
if (i == 0 || i == n - 1 || j == 0 || j == n - 1) {
printf("%d ", 1);
} else {
printf("%d ", 0);
}
}
printf("\n");
}
}
int main() {
hollowMatrix(10);
printf("\n");
hollowMatrix(11);
return 0;
}</lang>
- Output:
1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1
F#
<lang fsharp> // Four sides of square. Nigel Galloway: February 18th., 2022 let m11 m=Array2D.init m m (fun n g->if n=0 || g=0 || g=m-1 || n=m-1 then 1 else 0) printfn "%A\n\n%A" (m11 5) (m11 6) </lang>
- Output:
[[1; 1; 1; 1; 1] [1; 0; 0; 0; 1] [1; 0; 0; 0; 1] [1; 0; 0; 0; 1] [1; 1; 1; 1; 1]] [[1; 1; 1; 1; 1; 1] [1; 0; 0; 0; 0; 1] [1; 0; 0; 0; 0; 1] [1; 0; 0; 0; 0; 1] [1; 0; 0; 0; 0; 1] [1; 1; 1; 1; 1; 1]]
FreeBASIC
Text based
<lang freebasic>Sub hollowMatrix(n As Integer)
For i As Integer = 0 To n
For j As Integer = 0 To n
Print Iif((i = 0) Or (i = n) Or (j = 0) Or (j = n), "1 ", "0 ");
Next j
Print
Next i
End Sub
hollowMatrix(9) Sleep</lang>
- Output:
1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1
Graphical
<lang freebasic>Dim As Integer n = 9, size = 60 * n + 70 Screenres size, size, 24 Cls Windowtitle "Four sides of square"
Dim As Integer beige = Rgb(245, 245, 220), brown = Rgb(171, 82, 54)
For x As Integer = 0 To n
For y As Integer = 0 To n
Dim As Integer cx = x*60 + 10
Dim As Integer cy = y*60 + 10
If (x = 0) Or (x = n) Or (y = 0) Or (y = n) Then
Line (cx,cy) - (cx+50, cy+50), brown, BF
Draw String (cx + 22, cy + 22), "1", 0
Else
Line (cx,cy) - (cx+50, cy+50), beige, BF
Draw String (cx + 22, cy + 22), "0", 0
End If
Next y
Next x Bsave "hollowMatrix.bmp",0 Sleep</lang>
- Output:
https://www.dropbox.com/s/9g5ahfzw1muuzgm/hollowMatrix.bmp?dl=0
Go
<lang go>package main
import "fmt"
func hollowMatrix(n uint) {
for i := uint(0); i < n; i++ {
for j := uint(0); j < n; j++ {
if i == 0 || i == n-1 || j == 0 || j == n-1 {
fmt.Printf("%d ", 1)
} else {
fmt.Printf("%d ", 0)
}
}
fmt.Println()
}
}
func main() {
hollowMatrix(8) fmt.Println() hollowMatrix(9)
}</lang>
- Output:
1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1
J
Implementation: <lang J>fsos=: Template:+./~(+.</lang>
Some examples:
<lang J> fsos 0
fsos 1
1
fsos 2
1 1 1 1
fsos 3
1 1 1 1 0 1 1 1 1
fsos 4
1 1 1 1 1 0 0 1 1 0 0 1 1 1 1 1
fsos 10
1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1</lang>
Gui examples are not visible here, but, for example: <lang J> require'viewmat'
viewmat fsos 20 viewmat fsos 5</lang>
Phix
See Matrix_with_two_diagonals#Phix and press 'O'.
Raku
This isn't a matrix, especially if it is supposed to be graphical; it's a very small (or extremely low resolution) bitmap.
<lang perl6>sub hollow ($n) { [1 xx $n], |(0 ^..^ $n).map( { [flat 1, 0 xx $n - 2, 1] } ), [1 xx $n] }
.put for hollow 7; put ; .put for hollow 10;</lang>
- Output:
1 1 1 1 1 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1
Red
<lang rebol>Red[]
view-square: function [size][
matrix: copy [
title "Four sides of a square"
style cell: base 50x50 font-size 20
style one: cell brown font-color beige "1" ; I am not an artist. Please have mercy!
style zero: cell beige font-color brown "0"
]
repeat i size [
either any [i = 1 i = size] [
append matrix append/dup copy [] 'one size
][
row: append/dup copy [] 'zero size
row/1: row/:size: 'one
append matrix row
]
append matrix 'return
]
view matrix
]
view-square 9</lang>
- Output:
https://commons.wikimedia.org/wiki/File:Hollow_matrix_gui.png
Ring
<lang ring>
- Project : Identity Matrix
- Date : 2022/16/02
- Author : Gal Zsolt (~ CalmoSoft ~)
- Email : <calmosoft@gmail.com>
load "stdlib.ring" load "guilib.ring"
size = 9 C_Spacing = 1
C_ButtonBlueStyle = 'border-radius:6px;color:black; background-color: blue' C_ButtonOrangeStyle = 'border-radius:6px;color:black; background-color: orange'
Button = newlist(size,size) LayoutButtonRow = list(size)
app = new qApp {
win = new qWidget() {
setWindowTitle('Identity Matrix') move(500,100) reSize(600,600) winheight = win.height() fontSize = 18 + (winheight / 100)
LayoutButtonMain = new QVBoxLayout()
LayoutButtonMain.setSpacing(C_Spacing) LayoutButtonMain.setContentsmargins(0,0,0,0)
for Row = 1 to size LayoutButtonRow[Row] = new QHBoxLayout() { setSpacing(C_Spacing) setContentsmargins(0,0,0,0) }
for Col = 1 to size
Button[Row][Col] = new QPushButton(win) {
setSizePolicy(1,1)
}
LayoutButtonRow[Row].AddWidget(Button[Row][Col]) next LayoutButtonMain.AddLayout(LayoutButtonRow[Row]) next
LayoutDataRow1 = new QHBoxLayout() { setSpacing(C_Spacing) setContentsMargins(0,0,0,0) }
LayoutButtonMain.AddLayout(LayoutDataRow1)
setLayout(LayoutButtonMain)
show()
}
pBegin()
exec()
}
func pBegin()
for Row = 1 to size
for Col = 1 to size
if Row = 1 or row = size or Col = 1 or Col = size
Button[Row][Col].setStyleSheet(C_ButtonOrangeStyle)
Button[Row][Col].settext("1")
else
Button[Row][Col].setStyleSheet(C_ButtonBlueStyle)
Button[Row][Col].settext("0")
ok
next
next
</lang>
Output image:
Four sides of square
Wren
Text based
<lang ecmascript>var hollowMatrix = Fn.new { |n|
for (i in 0...n) {
for (j in 0...n) {
System.write((i == 0 || i == n-1 || j == 0 || j == n-1) ? "1 " : "0 ")
}
System.print()
}
}
hollowMatrix.call(9)</lang>
- Output:
1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1
Graphical
This is designed to look as close as possible to the Red entry's image so that we don't have to fill up Wikimedia Commons with similar looking images. <lang ecmascript>import "dome" for Window import "graphics" for Canvas, Color, Font class Main {
construct new(n) {
var size = 60 * n + 10
Window.resize(size, size)
Canvas.resize(size, size)
Window.title = "Four sides of a square"
// see Go-fonts page
Font.load("Go-Regular20", "Go-Regular.ttf", 20)
Canvas.font = "Go-Regular20"
var beige = Color.new(245, 245, 220)
Canvas.cls(Color.lightgray)
for (x in 0...n) {
for (y in 0...n) {
var cx = x*60 + 10
var cy = y*60 + 10
if (x == 0 || x == n-1 || y == 0 || y == n-1) {
Canvas.rectfill(cx, cy, 50, 50, Color.brown)
Canvas.print("1", cx + 20, cy + 15, beige)
} else {
Canvas.rectfill(cx, cy, 50, 50, beige)
Canvas.print("0", cx + 20, cy + 15, Color.brown)
}
}
}
}
init() {}
update() {}
draw(alpha) {}
}
var Game = Main.new(9)</lang>
- Output:
Similar to Red entry image.
XPL0
<lang XPL0>proc DrawMat(S); int S, I, J; [for I:= 0 to S-1 do
[for J:= 0 to S-1 do
Text(0, if I>0 & I<S-1 & J>0 & J<S-1 then "0 " else "1 ");
CrLf(0);
];
]; [DrawMat(6); CrLf(0);
DrawMat(7); CrLf(0);
]</lang>
- Output:
1 1 1 1 1 1 1 0 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 0 0 0 0 0 1 1 1 1 1 1 1 1