gold-5-6

整数转换。编写一个函数，确定需要改变几个位才能将整数A转成整数B。

示例1:

输入：A = 29 （或者0b11101）, B = 15（或者0b01111）
输出：2

示例2:

输入：A = 1，B = 2
输出：2

提示:

1. A，B范围在[-2147483648, 2147483647]之间

//leetcode submit region begin(Prohibit modification and deletion)
class Solution {
    public int convertInteger(int A, int B) {
        int tt = A ^ B;
        int result = 0;
        if (tt < 0) {
            tt = (tt & Integer.MAX_VALUE);
            result++;
        }

        while (tt > 0) {
            if ((tt & 1) == 1) {
                result++;
            }

            tt = tt >> 1;
        }

        return result;
    }
}
//leetcode submit region end(Prohibit modification and deletion)