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<?php
declare(strict_types=1);
namespace leetcode;
class ReverseBits
{
public static function reverseBits(int $n): int
if ($n === 0) {
return 0;
}
$ans = 0;
for ($i = 0; $i < 32; $i++) {
$ans <<= 1;
$ans += $n & 1;
$n >>= 1;
return $ans;
public static function reverseBits2(int $n): int
$ans = ($ans << 1) ^ ($n & 1);
imajinyun /
leetcode-php
