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Hi Coding Lover, I have solved hackerrank Count Triplets problem. In this video, I have explained how to solve hackerrank Count Triplets problem in O(N) time complexity. This hackerrank problem is a part of Practice | Interview Preparation Kit| Dictionaries and Hashmaps| Count Triplets hackerrank challenge. For simplicity, I have divided this hackerrank tutorial into 3 parts. [00:00] Understanding the problem statement. [07:13] Building the logic to solve the problem. [23:43] Coding the logic us

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