Solution: 3Sum
Explore the two pointers strategy to solve the 3Sum problem, finding unique triplets in an integer array that sum to zero. Learn how sorting and pointer adjustments efficiently identify valid triplets while avoiding duplicates, and understand the time and space complexity involved.
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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...