So how about solving the array union question without hashes? I'd sort the arrays and use something like: 
while( @sort_a and @sort_b ){
  if( $sort_a[0] < $sort_b[0]){ shift(@sort_a); }
  elsif( $sort_a[0] > $sort_b[0]{ shift(@sort_b); }
  else{ 
   push @new_array, $sort_a[0];
   shift(@sort_a);
   shift(@sort_b);
  }
}

[download]
This will handle duplicate entries in the arrays differently than the hash solution.

In reply to Re: &bull;SPOILERS Re: (OT) Interview questions -- your response? by ichimunki
in thread (OT) Interview questions -- your response? by Ovid

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