LeetCode 1. Two Sum 解题报告_ector twosum(vector& nums, int target

C++ Code:

class Solution {
public:
    vector<int> twoSum(vector<int>& nums, int target) {
        std::map<int, int> map;
        for(int i = 0; i < nums.size(); i++)
        {
            if(map.find(target - nums[i]) != map.end())
            {
                std::vector<int> result{map[target - nums[i]], i + 1};
                return result;
            }
            map[nums[i]] = i + 1;
        }
    }
};

class Solution(object):
    def twoSum(self, nums, target):
        """
        :type nums: List[int]
        :type target: int
        :rtype: List[int]
        """
        map = {}
        for index,num in enumerate(nums):
            if target - num in map:
                return [map[target - num], index + 1]
            map[num] = index + 1

/**
 * @param {number[]} nums
 * @param {number} target
 * @return {number[]}
 */
var twoSum = function(nums, target) {
    var map = {}
    for(i = 0; i < nums.length; i++)
    {
        if(map.hasOwnProperty(target - nums[i]))
        {
            return [map[target - nums[i]], i + 1]
        }
        map[nums[i]] = i + 1
    }
};