Number Of Triplets In Array, Count the number of index triplets (i<j<k) in an array whose three values are pairwise distinct. A triplet is defined if it satisfies ANY ONE of the following conditions: All numbers in the triplet are the same (Eg. Jul 23, 2025 · Given an array arr [] consisting of N integers, the task is to find the number of triplets whose indices and elements at that indices are in increasing order. Assignment; import java. See almost-isosceles primitive Pythagorean triples section below. Better than official and forum solutions. Return true if such a triplet exists, otherwise, return false. More specifically, the task is to count triplets (i, j, k) of valid indices, such that arr [i] + arr [j] + arr [k] = target and i < j < k. Oct 29, 2014 · So you can compute the number of combinations in O (1) easily enough (if you use an approximation for the factorial function), but if you want to enumerate them your time complexity approaches O (m!) (for sufficiently large values of m). Problem link: https://practice.

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