Zig-zag matrix: Difference between revisions
Added Wren
(Added Wren) |
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20 22 32 35 41 44 46
21 33 34 42 43 47 48
</pre>
=={{header|Wren}}==
{{trans|Go}}
{{libheader|Wren-fmt}}
<lang ecmascript>import "/fmt" for Conv, Fmt
var zigzag = Fn.new { |n|
var r = List.filled(n*n, 0)
var i = 0
var n2 = n * 2
for (d in 1..n2) {
var x = d - n
if (x < 0) x = 0
var y = d - 1
if (y > n - 1) y = n - 1
var j = n2 - d
if (j > d) j = d
for (k in 0...j) {
if (d&1 == 0) {
r[(x+k)*n+y-k] = i
} else {
r[(y-k)*n+x+k] = i
}
i = i + 1
}
}
return r
}
var n = 5
var w = Conv.itoa(n*n - 1).count
var i = 0
for (e in zigzag.call(n)) {
Fmt.write("$*d ", w, e)
if (i%n == n - 1) System.print()
i = i + 1
}</lang>
{{out}}
<pre>
0 1 5 6 14
2 4 7 13 15
3 8 12 16 21
9 11 17 20 22
10 18 19 23 24
</pre>
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