RosettaCodeData/Task/Catalan-numbers/PHP/catalan-numbers-2.php
2019-09-12 10:33:56 -07:00

13 lines
266 B
PHP

<?php
$n = 15;
$t[1] = 1;
foreach (range(1, $n+1) as $i) {
foreach (range($i, 1-1) as $j) {
$t[$j] += $t[$j - 1];
}
$t[$i +1] = $t[$i];
foreach (range($i+1, 1-1) as $j) {
$t[$j] += $t[$j -1];
}
print ($t[$i+1]-$t[$i])."\t";
}