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LeetCode Search Insert Position
Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in order. You may assume no duplicates in the array....
分类:其他好文   时间:2015-02-26 20:22:53    阅读次数:118
oracle解锁问题:Record is locked by another user
解锁方法:1、查看锁select t2.username,t2.sid,t2.serial#,t2.logon_time from v$locked_object t1,v$session t2 where t1.session_id=t2.sid order by t2.logon_time;查出...
分类:数据库   时间:2015-02-26 20:20:18    阅读次数:170
[LeetCode] Convert Sorted List to Binary Search Tree
Given a singly linked list where elements are sorted in ascending order, convert it to a height balanced BST.解法:自底向上 时间复杂度O(n), 空间复杂度O(logN) 1 clas...
分类:其他好文   时间:2015-02-26 19:58:04    阅读次数:166
Django----模板
为了将html页面和python代码分离开来,有必要介绍一下模板的作用,Django中自带很多模板。以下一个html模板文件:Ordering noticeOrdering noticeDear {{ person_name }},Thanks for placing an order from {...
分类:其他好文   时间:2015-02-26 13:22:59    阅读次数:160
Leetcode: Binary Search Tree Iterator
We essentailly do an in-order traversal (中序遍历) of the tree since the in-order traversal results in a sorted list of node items.1 def traverse_binary_t...
分类:其他好文   时间:2015-02-26 06:28:30    阅读次数:155
leetcode 75. Sort Colors
Given an array withnobjects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, wh...
分类:其他好文   时间:2015-02-25 23:37:22    阅读次数:140
LeetCode Search for a Range
Given a sorted array of integers, find the starting and ending position of a given target value. Your algorithm's runtime complexity must be in the order of O(log n). If the target is not found ...
分类:其他好文   时间:2015-02-25 21:10:33    阅读次数:163
NYOJ 233 &&NYOJ 322 Sort(树状数组)
链接:click here 题意: 描述 You want to processe a sequence of n distinct integers by swapping two adjacent sequence elements until the sequence is sorted in ascending order. Then how many times it nee...
分类:编程语言   时间:2015-02-25 21:10:08    阅读次数:153
SQL server 数据库用户表名称
转自(http://blog.163.com/jlj_sk/blog/static/22579293200861422833924/)取得SQL server 数据库中 所有用户表名称 select name from sysobjects where xtype='U' order by name...
分类:数据库   时间:2015-02-25 19:52:14    阅读次数:252
mysql sql优化
1.对查询进行优化,应尽量避免全表扫描,首先应考虑在 where 及 order by 涉及的列上建立索引。 ? 2.应尽量避免在 where 子句中对字段进行 null 值判断,否则将导致引擎放弃使用索引而进行全表扫描,如: ? se...
分类:数据库   时间:2015-02-25 18:47:07    阅读次数:211
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