Java

lizncu

class Solution {
  public int hammingDistance(int x, int y) {
    int count = 0;
    if (x == y) {
      return 0;
    }
    while (x != 0 || y != 0) {
      if (x % 2 != y % 2) {
        count++;
      }
      x = x / 2;
      y = y / 2;
    }
    return count;
  }
}