Leetcode Everyday: 1534. Count Good Triplets. Easy

public class Solution {
    public int CountGoodTriplets(int[] arr, int a, int b, int c) {
        int goodTriplets = 0;
        
        for (var i = 0; i < arr.Length - 2; ++i) 
            for (var j = i + 1; j < arr.Length - 1; ++j)
                for (var k = j + 1; k < arr.Length; ++k) {
                    if (Math.Abs(arr[i] - arr[j]) <= a && Math.Abs(arr[j] - arr[k]) <= b && Math.Abs(arr[i] - arr[k]) <= c) {
                        ++goodTriplets;
                    }       
                }
        
        return goodTriplets;
    }
}

Source: https://leetcode.com/problems/count-good-triplets/