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  1. Prepare
  2. Algorithms
  3. Implementation
  4. Beautiful Triplets
  5. Discussions

Beautiful Triplets

  • yeungsze
     + 0 comments

    Python one-liner:

    def beautifulTriplets(d, arr):
    return sum(arr.count(n) * arr.count(n + d) * arr.count(n + d + d) for n in set(arr))

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