Easy-19

leetcode

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.

AC:

int getSum(int a, int b) {     int result;     while(b!=0)     {         result=a^b;         b=(a&b)<<1;         a=result;     }     return a; }

tips: 简单易懂的解法，很受益。