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main.cpp - Two Sum Problem

#include <iostream>

#include <vector>

#include <unordered_map>

using namespace std;

vector <int> twoSum ( vector <int>& nums, int target) {

unordered_map<int, int> map;

for ( int i = 0; i < nums.size(); i++) {

int complement = target - nums[i];

if (map.find(complement) != map.end()) {

return { map[complement], i };

}

map[nums[i]] = i;

}

return {};

}

Compiled Successfully Runtime: 4ms

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