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Apr 4th, 2011
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PHP 0.29 KB | None | 0 0
  1. <?php
  2. $n=6;
  3. $i=1;
  4. $k=0;
  5. while($i<=$n){
  6.     if($k==0){
  7.         for($j=1;$j<=$i;$j++){
  8.             echo $j;
  9.             if($i!=$j) echo "-";
  10.             else echo "<br>";
  11.         }
  12.     }
  13.     if($k==1){
  14.         for($j=$i;$j>0;$j--){
  15.             echo $j;
  16.             if($j!=1) echo "-";
  17.             else echo "<br>";
  18.         }
  19.     }
  20.     $k++;
  21.     if($k==2) $k=0;
  22.     $i++;
  23. }
  24. ?>
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