Two Sum - Part 3 - Interview Question
Prerequisite:Basic HashMap, Array, Loop, and Big O knowledge.
This article is Part 3 of a series.
( Problem Recap )
Given an integer array and target, return the indices of the two numbers that add up to the target number.
Requirements:You may not use the same element twice.
( Improving our answer )
Our previous answer contained two separate loops and a hash-map.