Magic squares of doubly even order: Difference between revisions
Added Sidef
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}</lang>
=={{header|Sidef}}==
{{trans|Ruby}}
<lang ruby>func double_even_magic_square(n) {
assert(n%4 == 0, "Need multiple of four")
var (bsize, max) = (n/4, n*n)
var pre_pat = [true, false, false, true,
false, true, true, false]
pre_pat += pre_pat.flip
var pattern = (pre_pat.map{|b| bsize.of(b)... } * bsize)
pattern.map_kv{|k,v| v ? k+1 : max-k }.slices(n)
}
func format_matrix(a) {
var fmt = "%#{a.len**2 -> len}s"
a.map { .map { fmt % _ }.join(' ') }.join("\n")
}
say format_matrix(double_even_magic_square(8))</lang>
{{out}}
<pre>
1 2 62 61 60 59 7 8
56 55 11 12 13 14 50 49
48 47 19 20 21 22 42 41
25 26 38 37 36 35 31 32
33 34 30 29 28 27 39 40
24 23 43 44 45 46 18 17
16 15 51 52 53 54 10 9
57 58 6 5 4 3 63 64
</pre>
=={{header|VBScript}}==
{{trans|Java}}
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