That's overly complicated. 
my $i = 0;
for my $x (0..$nx-1) {
for my $y (0..$ny-1) {
for my $z (0..$nz-1) {
   $dst[$x][$y][$z] = $src[$i++];
}}}

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In reply to Re: 1d array into 3d by ikegami
in thread 1d array into 3d by MKevin

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