3v4l.org

run code in 300+ PHP versions simultaneously
<?php function solution($A) { $n = sizeof($A); $result = 0; for ($i = 0; $i < $n - 1; $i++) { if ($A[$i] == $A[$i + 1]) $result = $result + 1; } $r = 0; for ($i = 0; $i < $n; $i++) { $count = 0; if ($i > 0) { if ($A[$i - 1] != $A[$i]) $count = $count + 1; else $count = $count - 1; } if ($i < $n - 1) { if ($A[$i + 1] != $A[$i]) $count = $count + 1; else $count = $count - 1; } $r = max($r, $count); } return $result + $r; } $A[0] = 1; $A[1] = 1; $A[2] = 0; print_r(solution($A));
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, 5.6.8 - 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 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
2
preferences:
222.78 ms | 406 KiB | 326 Q