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Diffstat (limited to 'count_good_triplets.py')
-rw-r--r-- | count_good_triplets.py | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/count_good_triplets.py b/count_good_triplets.py new file mode 100644 index 0000000..c3007cf --- /dev/null +++ b/count_good_triplets.py @@ -0,0 +1,36 @@ +# 1534. Count Good Triplets + +""" +given an array of integers 'arr', and three integers 'a, b, c', yo need to +find the number of good triplets. a triplet '(arr[i], arr[j], arr[k])' is +good if the following conditions are met: '0 <= i < j < k < arr.len, |arr[i] +- arr[j]| <= (a, b, c)' where '|x|' denotes the absolute value of 'x'. return +the number of good triplets. +""" + + +class Solution(object): + def countGoodTriplets(self, arr, a, b, c): + """ + :type arr: List[int] + :type a: int + :type b: int + :type c: int + :rtype: int + """ + cnt = 0 + n = len(arr) + for i in range(n - 2): + for k in range(i + 2, n): + if abs(arr[k] - arr[i]) > c: + continue + for j in range(i + 1, k): + if abs(arr[i] - arr[j]) <= a and abs(arr[j] - arr[k]) <= b: + cnt += 1 + return cnt + + +if __name__ == "__main__": + obj = Solution() + print(obj.countGoodTriplets(arr=[3, 0, 1, 1, 9, 7], a=7, b=2, c=3)) + print(obj.countGoodTriplets(arr=[1, 1, 2, 2, 3], a=0, b=0, c=1)) |