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Text File  |  1992-10-18  |  117 b   |  10 lines

  1. #!/usr/bin/perl
  2.  
  3. if ($first >= $last) {
  4.     local($tmp);
  5.  
  6.     $tmp = $first;
  7.     $first = $last;
  8.     $last = $tmp;
  9. }
  10.