Leetcode two sum [twoSum] | Facebook Coding Interview | Java | Python

Publicado em: 09 Agosto 2020
no canal de: codedecks

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Leetcode two sum [twoSum] | Facebook Coding Interview | Java | Python
This interview question is from LeetCode and commonly asked by the following companies: Facebook, Google, Amazon, Airbnb, Microsoft, Uber, LinkedIn, Apple, Bloomberg, Microsoft, Alibaba, Adobe, and more.

Problem description: 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, and you may not use the same element twice.

Example:
Given nums = [2, 7, 11, 15], target = 9

Because nums[0] + nums[1] = 2 + 7 = 9
return [0, 1]

I have explained both brute force and hash table approach, an efficient technique is using hashmap which provides O(n) time and space complexity.

Problem Link
https://leetcode.com/problems/two-sum/

Solution Link
Java - https://github.com/codedecks-in/LeetC...

Python - https://github.com/codedecks-in/LeetC...

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