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<?php
declare(strict_types=1);
namespace leetcode;
class NumberOfOneBits
{
public static function hammingWeight(int $n): int
$cnt = 0;
while ($n !== 0) {
$n &= ($n - 1);
$cnt++;
}
return $cnt;
public static function hammingWeight2(int $n): int
$cnt += $n & 1;
$n >>= 1;
imajinyun /
leetcode-php
