380. Insert Delete GetRandom O(1)

LeetCodeArrayHash TableMathDesignRandomizedOpen on judge ↗

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() Returns a random element from the

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solution.cppC++17

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