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1050 String Subtraction (20 分)哈希 map
1050 String Subtraction (20 分) Given two strings S?1?? and S?2??, S=S?1???S?2?? is defined to be the remaining string after taking all the characters ...
分类:其他好文   时间:2019-01-24 18:56:24    阅读次数:152
java lang IllegalArgumentException Invalid character found
java.lang.IllegalArgumentException: Invalid character found in the request target. The valid characters are defined in RFC 7230 and RFC 3986 org.apach ...
分类:编程语言   时间:2019-01-24 13:24:54    阅读次数:186
使用tp访问数据库时提示错误: 'PDO' not found, 和not defined constant mysql_attr_init_command
第一个问题: PDO not found 是因为 php没有安装pdo扩展, 无法提供给 php 以 数据库访问功能, 所以 报错是在文件: Think/Db.class.php的里面. 解决方法是: 给 php安装 PDO 扩展: 这时 再看 就可以 在 默认 自动 加载的modules目录 中 ...
分类:数据库   时间:2019-01-24 00:24:51    阅读次数:263
tornado options
tornado.options.define() 用来定义options选项变量的方法,定义的变量可以在全局的tornado.options.options中获取使用,传入参数: name 选项变量名,须保证全局唯一性,否则会报“Option 'xxx' already defined in ... ...
分类:其他好文   时间:2019-01-23 15:36:53    阅读次数:204
1115 Counting Nodes in a BST (30 分)建立二叉搜索树,求每层结点数目
1115 Counting Nodes in a BST (30 分) A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The left su ...
分类:其他好文   时间:2019-01-23 15:34:14    阅读次数:143
1064 Complete Binary Search Tree (30 分)完全二叉树
1064 Complete Binary Search Tree (30 分) A Binary Search Tree (BST) is recursively defined as a binary tree which has the following properties: The lef ...
分类:其他好文   时间:2019-01-23 13:52:10    阅读次数:197
甲级1007 Maximum Subsequence Sum
Given a sequence of K integers { N?1??, N?2??, ..., N?K?? }. A continuous subsequence is defined to be { N?i??, N?i+1??, ..., N?j?? } where 1. The Max ...
分类:其他好文   时间:2019-01-23 00:19:14    阅读次数:136
找bug - Target runtime Apache Tomcat v7.0 is not defined
这个项目是去年用同一个eclipse做的,但是今年原封不动导入的时候,确发现这个东西 tomcat选成我们本地的tomcat8就可以了 泼菲解决。 ...
分类:Web程序   时间:2019-01-21 22:13:27    阅读次数:222
Chiaki Sequence Revisited HDU - 6304 lowbit找规律法
Problem Description Chiaki is interested in an infinite sequence a1,a2,a3,..., which is defined as follows: an={1an?an?1+an?1?an?2n=1,2n≥3 Chiaki woul ...
分类:其他好文   时间:2019-01-20 22:54:51    阅读次数:410
POJ 3764 The xor-longest Path
Description In an edge weighted tree, the xor length of a path p is defined as the xor sum of the weights of edges on p : ? ⊕ is the xor operator. We ...
分类:其他好文   时间:2019-01-19 23:24:08    阅读次数:303
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