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The Two Pointers (Opposite Ends) technique involves placing one pointer at the start and another at the end of a sorted array or string, moving them inward based on specific conditions to efficiently find pairs or optimize values. This method reduces time complexity from O(n²) to O(n) by eliminating impossible pairs early and is particularly useful for problems involving symmetry or optimization. Key recognition cues include sorted inputs, the need for pairs, and constraints suggesting a more efficient solu

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q259342

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