Re: Chess Board Single Loop

If one loop is better than two, zero loops must be better than one!

#!/usr/bin/env perl
use strict; use warnings;

sub add {
    my $n = shift; 
    return add($n-1) . sprintf( "%3d",$n) . ($n%8?'':"\n") if $n > 0;
}
print add(64);

# output
  1  2  3  4  5  6  7  8
  9 10 11 12 13 14 15 16
 17 18 19 20 21 22 23 24
 25 26 27 28 29 30 31 32
 33 34 35 36 37 38 39 40
 41 42 43 44 45 46 47 48
 49 50 51 52 53 54 55 56
 57 58 59 60 61 62 63 64
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Aaron B.
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In Section Seekers of Perl Wisdom