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Grokking the Coding Interview Patterns

Solution: 3Sum

Learn to solve the 3Sum problem by applying the two pointers technique combined with array sorting to identify all unique triplets summing to zero. Understand the method to avoid duplicates and analyze the time and space complexity of this effective approach.

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Statement

Given an integer array, nums, find and return all unique triplets [nums[i], nums[j], nums[k]], such that i ≠ \neq j, i ≠\neq k, and j ≠\neq k and nums[i] + nums[j] + nums[k] ==0== 0 ...