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leetcode-222题:count complete tree nodes
admin11月 11, 20200
题目:Given a complete binary tree, count the number of nodes.
Definition of a complete binary tree from Wikipedia: In a complete binary tree every level, except possibly the last, is completely filled, and all nodes in the last level are as far left as possible. It can have between 1 and 2h nodes inclusive at the last level h.
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