Solved ProjectEuler/012: php, ruby, c

2012-03-08 14:25:58 +01:00
parent 18b050010e
commit edf0ad8674
4 changed files with 83 additions and 0 deletions
--- a/ProjectEuler/012/solve.php
+++ b/ProjectEuler/012/solve.php
@ -0,0 +1,13 @@
+<?php
+$num = 3;
+$tri_add = 2;
+do {
+	$num += ++$tri_add;
+	$divisors = 2;
+	$square_root = sqrt($num);
+	for($div = 2; $div <= $square_root; $div++) {
+		if($num % $div == 0)
+			$divisors+= 2;
+	}
+} while ($divisors <= 500);
+echo $num;