c++
不用加减乘除做加法
http://www.nowcoder.com/questionTerminal/59ac416b4b944300b617d4f7f111b215
class Solution {
public:
int Add(int num1, int num2)
{
int result = 0, carry = 0;
do {
result = num1 ^ num2;
carry = (num1 & num2) << 1;
num1 = result;
num2 = carry;
} while(carry != 0);
return result;
}
};
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