这个算完全二叉树吗?

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参考该网页:

A complete binary tree is a binary tree in which all the levels are completely filled except possibly the lowest one, which is filled from the left.
一个完全二叉树的每一层都被填满,除了最后一层,但最后一层要按照从左到右的顺序填。

这里的二叉树的第三层不是按从左到右的顺序填的,所以不是完全二叉树。