Runtime is O(N), space is O(N) as well. But HashMap and HashSet are not as fast as simple array mapping. classSolution {publicintmaxEqualFreq(int[] nums) {intres =nums.length;//m1: number -> its frequencyMap<Integer, Integer> m1 =newHashMap<>();//m2: frequency -> all number...
void duplicateElement() { var array = [1, 2, 3, 2, 5, 5]; Map<int, int> map = Map(); for (int i = 0; i < array.length; i++) { if (map.containsKey(array[i])) { map[array[i]] = map[array[i]] !+1; } else { map[array[i]] = 1; } } for (int i = 0;...