BiruLyu
6/4/2017 - 9:47 PM

371. Sum of Two Integers.java

public class Solution {
    public int getSum(int a, int b) {
        int sum = a ^ b;
        int carry = (a & b) << 1; 
        if(carry != 0) {
            return getSum(sum, carry);
        }
        return sum;
    }
}