As a suggestion, compare each element, starting at element 0 - as soon as you find a difference, you will know which element moved (untested)

@before = qw(1 2 3 4 5);
@after = qw(1 2 4 5 3);

for($n=0; $n <= $#before; $n++){
  if($before[$n] <> $after[$n]){
    print "Element $n changed\n";
    last;
  }
}

[download]
Tom Melly, tom@tomandlu.co.uk

In reply to Re: Difference between two arrays by Melly
in thread Difference between two arrays by rafl

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