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Last Updated: September 20, 2026
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neetcode.io/ - A better way to prepare for Coding Interviews Problem Link: neetcode.io/problems/ 00:00 - Step-by-Step Explanation Master Data Structures & Algorithms for FREE at AlgoMap.io/ Code solutions in This video explains a very important programming interview problem which is the Step-by-step algorithm visualization for Given an array nums of n integers and an integer target, are there elements a, b, c, and d in nums such that a + b + c + d = target? Return a list containing 4-variable lists which sums up to 0 without repetition.