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If we maintain a reference to the position of the leftmost node of a binary search tree, then…

If we maintain a reference to the position of the leftmost node of a binary search tree, then…

If we maintain a reference to the position of the leftmost node of a binary search tree, then operation firstEntry can be performed in O(1) time. Describe how the implementation of the other map methods need to be modified to maintain a reference to the leftmost position.