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Solution: Triples with Bitwise AND Equal To Zero

Explore how to efficiently count triplets in an array where the bitwise AND of three elements results in zero. This lesson guides you through leveraging a hash map to precompute pairwise AND frequencies and using them to identify valid triplets, reducing complexity from cubic to quadratic time. Understand key concepts in bitwise manipulation useful for coding interviews.

Statement

You’re given an array of integers called nums. Your task is to count how many triplets of indexes (i, j, k) satisfy the condition nums[i] & nums[j] & nums[k] == 0, where & is the bitwise AND operator and 00 \leq i,, j,, k ...