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:
- A,B范围在[-2147483648, 2147483647]之间
class Solution {
public int convertInteger(int A, int B) {
return Integer.bitCount(A ^ B);
}
}
function convertInteger(A: number, B: number): number {
let res = 0;
while (A !== 0 || B !== 0) {
if ((A & 1) !== (B & 1)) {
res++;
}
A >>>= 1;
B >>>= 1;
}
return res;
}
impl Solution {
pub fn convert_integer(a: i32, b: i32) -> i32 {
(a ^ b).count_ones() as i32
}
}