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题目: Given a binary tree, return the preorder traversal of its nodes' values. For example:Given binary tree {1,#,2,3}, return [1,2,3]. 题意及分析:给出一个二叉树,求先 阅读全文
posted @ 2017-06-15 14:53
荒野第一快递员
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题目: Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level 阅读全文
posted @ 2017-06-15 12:30
荒野第一快递员
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题目: Given a binary tree, return the inorder traversal of its nodes' values. For example:Given binary tree [1,null,2,3], return [1,3,2]. 题意及分析:简单来讲就是给出 阅读全文
posted @ 2017-06-15 10:02
荒野第一快递员
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