Calculate the sum of two integers a and b, but you are not allowed to use the operator + and -.
Example:
Given a = 1 and b = 2, return 3.
class Solution {
public:
int getSum(int a, int b) {
return a+b;
}
};LeetCode 371. Sum of Two Integers
原文：https://www.cnblogs.com/A-Little-Nut/p/10061202.html