timtowtdi
#!/usr/bin/perl
use strict;
use warnings;
@_ = ( 1 .. 12 );
my @a = map {
my @l = (($#_+1)-$_ => $_+1);
($_+1)%2 ? @l : reverse @l;
} 0..$#_>>1;
print "@a";
Output : 12 1 2 11 10 3 4 9 8 5 6 7
PooLpi
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