Leetcode 226[easy]---Invert Binary Tree(迭代入门题,tree-queue,stack 入门题,反复看)
2018-02-27 23:17
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思路:题意明了,无需多说。参考别人用三种方法解题,迭代,stack 和queue,每种方法都很重要,都是解决Tree问题的基本方法。
1. 迭代
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