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<?php function isPrimeNumber($num) { $isPrime = 1; for ($i = 2; $i <= ($num/2); $i++) { if ($num % $i == 0){ $isPrime = 0; break; } } return ($isPrime==1 || $num==2)? 1 : 0; } function generateRightTriangle( $rows ) { define("START",2); for ($i = 1, $count = START; $i <= $rows; $i++) { for ($j = 1; $j <= $i; $j++) { while( !isPrimeNumber($count) ){ $count++; } printf(" %-2d", $count); $count++; } printf("\n"); } return true; } if (!generateRightTriangle(5)) { trigger_error("An error has occurred!"); }
Output for 7.1.25 - 7.1.28, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
2 3 5 7 11 13 17 19 23 29 31 37 41 43 47
preferences:
180.83 ms | 403 KiB | 164 Q