Solution: 3Sum
Explore how to solve the 3Sum problem by applying the two pointers pattern on a sorted array to identify unique triplets summing to zero. Understand sorting benefits, pointer movements, and techniques to avoid duplicates while optimizing for time and space complexity.
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Statement
Given an integer array nums, find all unique triplets [nums[i], nums[j], nums[k]] where i, j, and k are distinct indices, such that the three elements sum to zero.
The result must not contain any duplicate triplets. The order of the output and the order of elements within each triplet does not matter.
Note: The solution set must only include unique triplets. Two triplets are considered duplicates if they contain the same elements regardless of ordering.
Constraints:
nums.length...