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hey everyone welcome back and lets write some more neat code today so today lets solve the problem insert delete get random all in o of one time so as the problem says were basically implementing these three methods and we want to design them in such a way that we can do all these operations in constant time were given a single class its called randomized set it has a constructor which we can use however we want and it has three methods that we need to implement insert so which is just as it says were inserting a value if the value though already exists in our set then were not going to add it twice but if it doesnt already exist were going to return true from this method if it does already exist then we return false the other method remove is similar we can only remove a value if its actually present in the set and if it is present we remove it and return true if its not present we just return false the more interesting method is get random basically is supposed to return a