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Leetcode No.1 Two Sum

-Given an array of integers, return indices of the two numbers such that they add up to a specific target.

You may assume that each input would have exactly one solution.

给定一个数组，和一个target，求这个数组中 和为target的两个数的位置。

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代码块

代码块语法遵循标准markdown代码，例如：

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