Awesome beautiful java python code


  • 2
    F
        public int fourSumCount(int[] A, int[] B, int[] C, int[] D) {
            HashMap<Integer, Integer> hashMap = new HashMap<>();
            for (int a : A) {
                for (int b : B) {
                    hashMap.put(a + b, hashMap.getOrDefault(a + b, 0) + 1);
                }
            }
            int result = 0;
            for (int c : C) {
                for (int d : D) {
                    result += hashMap.getOrDefault(-c - d, 0);
                }
            }
            return result;
        }
    

    python

        def fourSumCount(self, A, B, C, D):
            AB = collections.Counter(a + b for a in A for b in B)
            return sum(AB[-c - d] for c in C for d in D)
    

Log in to reply
 

Looks like your connection to LeetCode Discuss was lost, please wait while we try to reconnect.