[LeetCode] 380. Insert Delete GetRandom O(1)

[LeetCode] 380. Insert Delete GetRandom O(1)

380. Insert Delete GetRandom O(1) Medium Implement the RandomizedSet class: RandomizedSet() Initializes the RandomizedSet object. bool insert(int val) Inserts an item val into the set if not present. Returns true if the item was not present, false otherwise. bool remove(int val) Removes an item val from the set if present. Returns true if the item was present, false otherwise. int getRandom() Re..