i changed a bit you code to :
my $places = 6;
for my $left (1..$places-1) {
for my $right (0 .. $left -1) {
printf "%0$places"."b\n", (1 << $left) | (1 << $right);
}
}
and saw it works only with 2 ones...
and what if i have 6 ones and 14 zeroes ? do i have to do 6 for() loops ???
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