Count Good Triplets

<-E 1534> Count Good Triplets

class Solution {
public:
    int countGoodTriplets(vector<int>& arr, int a, int b, int c) {

    int len = arr.size();
    int count = 0;
    for(int i = 0; i < len; i++){
        for(int j = i + 1; j < len; j++){
            for(int k = j + 1; k < len; k++){
                if(abs(arr[i] - arr[j]) <= a && abs(arr[j] - arr[k]) <= b && abs(arr[i] - arr[k]) <= c){
                    count++;
                }
            }
        }
    }
    return count;
    }
};