1. Two Sum - Leetcode (Python)

Published: 27 February 2023
on channel: Quoc Dat Phung

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Two Sum Leetcode: 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. This is the two sum problem on Leetcode ( easy level ). Two sum. Leetcode easy problem. Python. Good for coding interview practices.

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]

Only one valid answer exists.

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