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@ 2025-12-18T13:12:21Z

<?php

function isQuadtree($bits, &$i){
 $i++;
 if ($i >= strlen($bits)) return false;
 if ($bits[$i] === "1") {
  isQuadtree($bits, $i);
  isQuadtree($bits, $i);
  isQuadtree($bits, $i);
  return isQuadtree($bits, $i);
 }
 return true;
}

$k = -1;
var_dump(isQuadtree("110000", $k));

Output
Performance
VLD
References
Branches

var_dump: documentation ( source)

preferences:dark modelive previewkey bindings

42.36 ms | 404 KiB | 5 Q