<?php
function variations($length, $chars) {
$unique_chars = count_chars($chars, 3);
if ($length <= 0 || $unique_chars <= 0) return 0;
$additional = ($length > 1) ? variations($length - 1, $chars) : 0;
return pow($unique_chars, $length) + $additional;
}
echo variations(10, 26);
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- 146813779479510
preferences:
218.35 ms | 405 KiB | 325 Q