Merge two sorted linked lists and return it as
a new list. The new list should be made by splicing together the nodes of the
first two lists./** * Def...
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其他好文 时间：
2014-06-11 22:56:31
阅读次数：
257
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 and alternate between).
For example:
G...
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其他好文 时间：
2014-06-08 17:29:07
阅读次数：
315
题目
Given a binary tree, return the level order traversal of its nodes' values. (ie, from left to right, level by level).
For example:
Given binary tree {3,9,20,#,#,15,7},
3
/ \...
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其他好文 时间：
2014-06-08 16:38:02
阅读次数：
194
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it as a link...
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其他好文 时间：
2014-06-08 15:30:28
阅读次数：
227
题目如下：
Given an input string, reverse the string word by word.
For example,
Given s = "the sky is blue",
return "blue is sky the".
click to show clarification.
Clarification:
What co...
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其他好文 时间：
2014-06-08 14:58:13
阅读次数：
231
题目
Reverse digits of an integer.
Example1: x = 123, return 321
Example2: x = -123, return -321。
解题思路：
颠倒一个整数中数字的位置，哈哈，类似翻转字符串一样，只不过整数需要计算，需要考虑溢出，其他无而。写出代码不难，只是溢出的时候怎么办，我这里是按照返回-1处理的，在leetcode上可以AC。
代码实现：...
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其他好文 时间：
2014-06-08 14:47:58
阅读次数：
257
题目
Given a binary tree, find its maximum depth.
The maximum depth is the number of nodes along the longest path from the root node down to the farthest leaf node.
方法
使用DFS对树进行遍...
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其他好文 时间：
2014-06-08 10:26:33
阅读次数：
207
题目
Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root).
For example:
Given binary tree {3,9,20...
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其他好文 时间：
2014-06-08 09:23:34
阅读次数：
230
题目：Given a linked list and a valuex, partition it
such that all nodes less thanxcome before nodes greater than or equal tox.You
should preserve the or...
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其他好文 时间：
2014-06-07 20:35:55
阅读次数：
236
Evaluate the value of an arithmetic expression
in Reverse Polish Notation.Valid operators are +, -, *, /. Each operand may be
an integer or another ex...
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其他好文 时间：
2014-06-07 20:34:41
阅读次数：
214
