Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.
For example,
"A man, a plan, a canal: Panama" is a palindrome.
"race a car" is not a p...
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其他好文 时间：
2015-01-27 18:23:55
阅读次数：
182
Validate Binary Search TreeGiven a binary tree, determine if it is a valid binary search tree (BST).Assume a BST is defined as follows:The left subtre...
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其他好文 时间：
2015-01-27 00:29:27
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205
https://oj.leetcode.com/problems/word-break/Given a stringsand a dictionary of wordsdict, determine ifscan be segmented into a space-separated sequenc...
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其他好文 时间：
2015-01-26 22:17:51
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173
Given a string, determine if it is a palindrome, considering only alphanumeric characters and ignoring cases.For example,"A man, a plan, a canal: Pana...
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其他好文 时间：
2015-01-26 20:56:06
阅读次数：
132
标题：Valid Sudoku通过率:27.2%难度：简单Determine if a Sudoku is valid, according to:Sudoku Puzzles - The Rules.The Sudoku board could be partially filled, where...
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其他好文 时间：
2015-01-26 19:09:45
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144
题目：
Given a string containing just the characters '(', ')', '{', '}', '[' and ']',
determine if the input string is valid.
The brackets must close in the correct order, "()" and "()[]{}" are...
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其他好文 时间：
2015-01-25 16:44:04
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136
题目链接：http://poj.org/problem?id=2992题目要求：Your task in this problem is to determine the number of divisors ofCnk. Just for fun -- or do you need any spe...
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其他好文 时间：
2015-01-25 16:37:06
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231
uva 1030 Image Is Everything
Your new company is building a robot that can hold small lightweight objects. The robot will have the intelligence to determine if an object is light enough to hold...
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其他好文 时间：
2015-01-25 08:47:16
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239
Given a linked list, determine if it has a cycle in it.Follow up:Can you solve it without using extra space?思路：1.可以用hash表记录链表中每个节点的地址，然后遍历发现重复，即有环，否则到...
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其他好文 时间：
2015-01-24 15:43:21
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166
Given two strings S and T, determine if they are both one edit distance apart.用i, j 两个指针，从左边扫到右边，两个一起走。s.charAt(i) != t.charAt(j)distance++要么i跳一格，要么j跳...
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其他好文 时间：
2015-01-24 06:44:38
阅读次数：
152
