Valid PalindromeGiven a string, determine if it
is a palindrome, considering only alphanumeric characters and ignoring cases.For
example,"A man, a pla...
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其他好文 时间:
2014-05-12 16:27:07
阅读次数:
332
Given a binary tree containing digits from 0-9
only, each root-to-leaf path could represent a number.An example is the
root-to-leaf path 1->2->3 which...
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其他好文 时间:
2014-05-05 23:55:36
阅读次数:
407
64位系统中,安装freetype时,出现这个问题。后来发现,此问题进出现在64位系统中。
修复方法:
cd zlib-1.2.3 //进入zlib目录
CFLAGS="-O3 -fPIC" ./configure //使用64位元的方法进行编译
make
make install
然后,进入freetyp...
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其他好文 时间:
2014-05-02 23:50:23
阅读次数:
397
Given a binary tree, determine if it is a valid
binary search tree (BST).Assume a BST is defined as follows:The left subtree of
a node contains only n...
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其他好文 时间:
2014-05-02 15:03:57
阅读次数:
386
安装ActionBar:
Support Android 3.0 and Above Only(仅支持3.0版本之后)
...
Support Android 2.1 and Above(如果想让应用支持3.1版本之后,需如下操作)
1安装v7 appcompat 库
2Update your activity so that it extends ActionB...
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移动开发 时间:
2014-05-02 06:52:12
阅读次数:
508
Say you have an array for which theithelement
is the price of a given stock on dayi.If you were only permitted to complete at
most one transaction (ie...
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其他好文 时间:
2014-05-02 00:37:20
阅读次数:
349
Determine whether an integer is a palindrome.
Do this without extra space.Some hints:Could negative integers be palindromes?
(ie, -1)If you are thinki...
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其他好文 时间:
2014-05-01 19:48:19
阅读次数:
344
You are given an n x n 2D matrix representing an image.
Rotate the image by 90 degrees (clockwise).
Follow up:
Could you do this in-place?
刚开始没有思路,但是自己举了几个简单的栗子才看出规律:需要一圈儿一圈儿的变换位置。有两层for循环:外...
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其他好文 时间:
2014-05-01 18:33:34
阅读次数:
359
org.springframework.dao.InvalidDataAccessApiUsageException: Write operations are not allowed in read-only mode (FlushMode.NEVER) - turn your Session into FlushMode.AUTO or remove 'readOnly' marker from transaction definition...
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数据库 时间:
2014-05-01 18:16:35
阅读次数:
377
Crossing River
Time Limit: 1000MS
Memory Limit: 10000K
Total Submissions: 10212
Accepted: 3855
Description
A group of N people wishes to go across a river with only one...
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其他好文 时间:
2014-04-30 22:21:38
阅读次数:
212