README_EN.md

2235. Add Two Integers

中文文档

Description

Given two integers num1 and num2, return the sum of the two integers.

 

Example 1:

Input: num1 = 12, num2 = 5
Output: 17
Explanation: num1 is 12, num2 is 5, and their sum is 12 + 5 = 17, so 17 is returned.

Example 2:

Input: num1 = -10, num2 = 4
Output: -6
Explanation: num1 + num2 = -6, so -6 is returned.

 

Constraints:

• -100 <= num1, num2 <= 100

Solutions

Solution 1

class Solution:
    def sum(self, num1: int, num2: int) -> int:
        return num1 + num2

class Solution {
    public int sum(int num1, int num2) {
        return num1 + num2;
    }
}

class Solution {
public:
    int sum(int num1, int num2) {
        return num1 + num2;
    }
};

func sum(num1 int, num2 int) int {
	return num1 + num2
}

function sum(num1: number, num2: number): number {
    return num1 + num2;
}

impl Solution {
    pub fn sum(num1: i32, num2: i32) -> i32 {
        num1 + num2
    }
}

int sum(int num1, int num2) {
    return num1 + num2;
}

Solution 2

class Solution:
    def sum(self, num1: int, num2: int) -> int:
        num1, num2 = num1 & 0xFFFFFFFF, num2 & 0xFFFFFFFF
        while num2:
            carry = ((num1 & num2) << 1) & 0xFFFFFFFF
            num1, num2 = num1 ^ num2, carry
        return num1 if num1 < 0x80000000 else ~(num1 ^ 0xFFFFFFFF)

class Solution {
    public int sum(int num1, int num2) {
        while (num2 != 0) {
            int carry = (num1 & num2) << 1;
            num1 ^= num2;
            num2 = carry;
        }
        return num1;
    }
}

class Solution {
public:
    int sum(int num1, int num2) {
        while (num2) {
            unsigned int carry = (unsigned int) (num1 & num2) << 1;
            num1 ^= num2;
            num2 = carry;
        }
        return num1;
    }
};

func sum(num1 int, num2 int) int {
	for num2 != 0 {
		carry := (num1 & num2) << 1
		num1 ^= num2
		num2 = carry
	}
	return num1
}

function sum(num1: number, num2: number): number {
    while (num2) {
        const carry = (num1 & num2) << 1;
        num1 ^= num2;
        num2 = carry;
    }
    return num1;
}

impl Solution {
    pub fn sum(num1: i32, num2: i32) -> i32 {
        let mut num1 = num1;
        let mut num2 = num2;
        while num2 != 0 {
            let carry = (num1 & num2) << 1;
            num1 ^= num2;
            num2 = carry;
        }
        num1
    }
}