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数据库排序
use mydb --排序select *from Category order by Ids asc--order排序的意思--asc 升序select *from Category order by Ids desc--desc 降序select *from Category order by ...
分类:数据库   时间:2014-11-25 10:25:27    阅读次数:268
【LeetCode】Convert Sorted List to Binary Search Tree 解题报告
【题目】 Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST. 【解析】 分治:用快慢指针找到链表的中点,作为树的root,然后二分——中点之前的链表和中点之后的链表分别再构造二叉平衡树。 /** * Defin...
分类:其他好文   时间:2014-11-24 22:39:00    阅读次数:218
leetcode-Binary Tree Level Order Traversal 二叉树层序遍历
leetcode-Binary Tree Level Order Traversal 二叉树层序遍历 #include #include using namespace std; typedef struct BiTree { int val; struct BiTree *lchild; struct BiTree *rchild; }BiTree; void main(...
分类:其他好文   时间:2014-11-24 22:35:13    阅读次数:202
[LeetCode]Binary Tree Level Order Traversal
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 / 9 20 ...
分类:其他好文   时间:2014-11-24 22:33:13    阅读次数:272
[LeetCode]Binary Tree Zigzag Level Order Traversal
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: Given binary ...
分类:其他好文   时间:2014-11-24 22:31:45    阅读次数:196
Biopython - sequences and alphabets
The Sequence objectSome examples will also require a working internet connection in order to run.>>> from Bio.Seq import Seq>>> from Bio.Alphabet impo...
分类:编程语言   时间:2014-11-24 22:07:43    阅读次数:297
About compiling some source code on centos
1. To change the order of PATH items, you just need to put the newly-added path in front of the PATH, or at the back of the path to put it behind all ...
分类:其他好文   时间:2014-11-24 20:38:15    阅读次数:201
Sql Server系列:Select基本语句
T-SQL中使用SELECT语句进行数据查询,SELECT语法结构: ::= [WITH [,...n]] [ ORDER BY { order_by_expression | column_position [ ASC | DESC ] } [ ,...n ] ...
分类:数据库   时间:2014-11-24 13:13:50    阅读次数:235
最近使用到的一些SQL语句
1.查询重复的信息: select * from Rex_Test where tName in (select tName from Rex_Test group by tName having count(1) >= 2) 2.从表中随机读取N条数据 Select top N * From table Order by newid() 3.多条件查询时,当条件有为空的情况 ...
分类:数据库   时间:2014-11-24 10:04:59    阅读次数:185
查询sql server数据库中字段内容长度的方法
在做项目的时候,需要查询数据库中相应字段的内容长度,以下是记录下来的方法:SELECT length = DATALENGTH(username), username FROM TABLENAME ORDER BY length desc
分类:数据库   时间:2014-11-24 09:50:04    阅读次数:206
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