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题目：Given two binary trees, write a function to check if they are equal or not.Two binary trees are considered equal if they are structurally identical... 阅读全文
2015年5月15日
2015年5月14日
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题目：Two elements of a binary search tree (BST) are swapped by mistake.Recover the tree without changing its structure.Note:A solution using O(n) space ... 阅读全文
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题目：Given a binary tree, return thezigzag level ordertraversal of its nodes' values. (ie, from left to right, then right to left for the next level and... 阅读全文
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题目：Given a binary tree, return thebottom-up level ordertraversal of its nodes' values. (ie, from left to right, level by level from leaf to root).For ... 阅读全文
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题目：Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level).For example:Given binary tree{3,... 阅读全文
2015年5月13日
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题目：Given a binary tree, return thepostordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[3,2,1]... 阅读全文
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题目：Given a binary tree, return theinordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[1,3,2].N... 阅读全文
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题目：Given a binary tree, return thepreordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3return[1,2,3].... 阅读全文
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刷题进入到二叉树这个章节，开篇随笔记录下二叉树相关的内容：二叉树的各种遍历和操作：http://blog.csdn.net/fansongy/article/details/6798278二叉搜索树（BST）的插入、查找、删除：http://segmentfault.com/a/1190000002... 阅读全文
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题目：Evaluate the value of an arithmetic expression inReverse Polish Notation.Valid operators are+,-,*,/. Each operand may be an integer or another expr... 阅读全文
