码迷,mamicode.com
首页 >  
搜索关键字:order    ( 17944个结果
[Leetcode] Convert Sorted Array to Binary Search Tree
Given an array where elements are sorted in ascending order, convert it to a height balanced BST.Solution:/** * Definition for binary tree * public cl...
分类:其他好文   时间:2014-10-27 06:51:31    阅读次数:137
select执行过程
SELECT语句的执行的逻辑查询处理步骤:(11) (1)FROM (3) JOIN (2) ON (4)WHERE (5)GROUP BY (6)WITH {CUBE | ROLLUP}(7)HAVING (8)SELECT (9)DISTINCT(10)ORDER BY 每个步骤产生一个虚拟.....
分类:其他好文   时间:2014-10-26 21:04:48    阅读次数:203
Android四大组件之——Activity(一)定义、状态和后退栈
什么是Activity 关键字:应用组件、四大组件、用户界面,交互。An Activity is an application component that provides a screen with which users can interact in order to do somethin...
分类:移动开发   时间:2014-10-26 18:16:39    阅读次数:346
LeetCode Valid Parentheses
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 all val...
分类:其他好文   时间:2014-10-26 17:02:49    阅读次数:142
【LeetCode】Add Two Numbers 解题报告
【题目】 You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single digit. Add the two numbers and return it...
分类:其他好文   时间:2014-10-26 14:21:29    阅读次数:243
提高mysql千万级大数据SQL查询优化30条经验(Mysql索引优化注意)
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:select id from t where num is null可以在num...
分类:数据库   时间:2014-10-26 13:07:32    阅读次数:312
[Leetcode] Remove Element
Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn't mat...
分类:其他好文   时间:2014-10-26 13:01:15    阅读次数:208
iOS_字典数组 按key分组和排序
// // main.m // SortGroup // // Created by beyond on 14-10-26. // Copyright (c) 2014年 beyond.com All rights reserved. // 按GroupTag分组和 按Order字段排序 enabled表示不启用 #import int main(int argc, const c...
分类:移动开发   时间:2014-10-26 11:46:44    阅读次数:262
Binary Tree Level Order Traversal 二叉树层序遍历
Given a binary tree, return thelevel ordertraversal of its nodes' values. (ie, from left to right, level by level).For example:Given binary tree{3,9,2...
分类:其他好文   时间:2014-10-26 06:48:34    阅读次数:188
Binary Tree Level Order Traversal II 二叉树层序遍历之二
Given a binary tree, return thebottom-up level ordertraversal of its nodes' values. (ie, from left to right, level by level from leaf to root).For exa...
分类:其他好文   时间:2014-10-26 06:47:17    阅读次数:187
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!