Question

How to calculate the Pascal triangle in PHP

Answer 1

$row = 5;
 
for ($i = 0; $i < $row; $i++) {

  $number = 1;

  for ($j = 0; $j < ($row - $i)*2; $j++)
       echo "&nbsp;";

  for ($j = 0; $j <= $i; $j++) {

       printf("%7d&nbsp;", $number); 
       $number = $number * ($i - $j) / ($j + 1);
  }
  echo "<br />";
}
 
 
/*
run:
   
           1 
         1  1 
       1  2  1 
     1  3  3  1 
   1  4  6  4  1 
   
*/

 

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