48.不用加减乘除做加法(python)
题目描述
写一个函数,求两个整数之和,要求在函数体内不得使用+、-、*、/四则运算符号。
java
public class Solution {public int Add(int num1,int num2) {
while (num2!=0) {
int temp = num1^num2;
num2 = (num1&num2)<<1;
num1 = temp;
}
return num1;
}
}
1 class Solution:2 def Add(self, num1, num2):
3 # write code here
4 while num2!=0:
5 sum_ = num1 ^ num2
6 carry = (num1 & num2)<<1
7 num1=sum_%0x100000000
8 num2=carry%0x100000000
9 if num1<=0x7FFFFFFF:
10 return num1
11 else:
12 return num1 |(~0x100000000+1)
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