number-of-unequal-triplets-in-array

Number of unequal triplets in array

Problem link

Solutions

Solution.cpp

// https://leetcode.com/problems/number-of-unequal-triplets-in-array/

class Solution {
 public:
  int unequalTriplets(vector<int>& nums) {
    int n = nums.size();
    int ret{};
    for (int a : nums)
      for (int b : nums)
        for (int c : nums)
          if (a != b and b != c and a != c) ++ret;
    return ret / 6;
  }
};

Tags

• Simple implementation