LeetCode Solutions
Two Sum Leetcode Solution Best & Easiest

In this post, we will solve the Two Sum HackerRank Solution. This problem (Two Sum) is a part of the HackerRank Problem Solving series.
Given an array of integers nums
and an integer target
, return indices of the two numbers such that they add up to target
.
You may assume that each input would have exactly one solution, and you may not use the same element twice.
You can return the answer in any order.
Example 1:
Input: nums = [2,7,11,15], target = 9 Output: [0,1] Explanation: Because nums[0] + nums[1] == 9, we return [0, 1].
Example 2:
Input: nums = [3,2,4], target = 6 Output: [1,2]
Example 3:
Input: nums = [3,3], target = 6 Output: [0,1]
Constraints:
2 <= nums.length <= 104
-109 <= nums[i] <= 109
-109 <= target <= 109
- Only one valid answer exists.
Follow-up: Can you come up with an algorithm that is less than O(n2)
time complexity?
Two Sum Leet Code Solution
Problem solution in JavaScript programming:
var twoSum = function(nums, target) { let output = [] for (let i=0;i<=nums.length;i++){ if(nums[i] + nums[i+1] == target){ output.push(i,i+1); break; } } return output };
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