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Grokking the Coding Interview Patterns in C++

Solution: Triples with Bitwise AND Equal To Zero

Explore how to solve the problem of counting triplets in an array whose bitwise AND result is zero. Learn to optimize the brute-force approach by precomputing pairwise AND results with a hash map, reducing complexity and improving efficiency. Understand the two-phase strategy and implement the algorithm to handle array constraints effectively.

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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 0≤0 \leq i,, j,, k ...