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搜索关键字:hsql数据量大的时候 left join 查询非常慢    ( 19800个结果
make it clear how to use const in C++
1.first of all,take a lookup on the left side of keyword const.If there is something(type or pointer),then apply const featureto it.2.nothing found on...
分类:编程语言   时间:2014-05-06 00:38:25    阅读次数:361
【LeetCode OJ】Sum Root to Leaf Numbers
# Definition for a binary tree node# class TreeNode:# def __init__(self, x):# self.val = x# self.left = None# self.right ...
分类:其他好文   时间:2014-05-05 22:56:23    阅读次数:419
Leetcode: Maximum Depth of Binary Tree
1 /** 2 * Definition for binary tree 3 * public class TreeNode { 4 * int val; 5 * TreeNode left; 6 * TreeNode right; 7 * TreeNo...
分类:其他好文   时间:2014-05-05 22:44:13    阅读次数:328
Leetcode: Same Tree
1 /** 2 * Definition for binary tree 3 * public class TreeNode { 4 * int val; 5 * TreeNode left; 6 * TreeNode right; 7 * TreeNo...
分类:其他好文   时间:2014-05-05 22:43:14    阅读次数:313
写了一个二叉树构造及中序遍历函数
// BTree.cpp : 定义控制台应用程序的入口点。 // #include "stdafx.h" #include"stdlib.h" #include"malloc.h" #define BT BTreeNode #define MS 10 typedef struct BT{ char data; struct BT *left; struct BT *right; }BT; ...
分类:其他好文   时间:2014-05-04 12:45:34    阅读次数:365
fzu 1920 Left Mouse Button(简单深搜题)
题目地址:http://acm.fzu.edu.cn/problem.php?pid=1920题目大意是给定一个n*n的图,模拟扫雷游戏,0代表没有雷区,1代表附近九宫格内只有一个雷……如果不懂的话去玩下扫雷,挺好玩的,99个雷的玩了好几百盘才赢了一次。。。。。。。。。。。。此题假设神操作,点不到雷...
分类:其他好文   时间:2014-05-03 23:15:02    阅读次数:470
CodeForces 383D Antimatter
Iahub accidentally discovered a secret lab. He found there n devices ordered in a line, numbered from 1 to n from left to right. Each device i (1?≤?i?...
分类:其他好文   时间:2014-05-02 15:36:19    阅读次数:314
Validate Binary Search Tree
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...
分类:其他好文   时间:2014-05-02 15:03:57    阅读次数:386
如何查找linux系统安装了多少perl模块
join函数利用字符将数组中的元素分割开.[root@localhost~]#find`perl-e‘@array=join("","@INC");print"@array";‘`-name*.pm|wc-l547这个例子是利用空格分开了要查找的路径,然后find可以查找所有的路径下匹配*.pm的文件,我一共查到了547个模块.
分类:系统相关   时间:2014-05-02 04:13:56    阅读次数:311
积分题05012014
计算\[\int_0^\infty {\frac{{\cos \left( {mx} \right)}}{{{x^4} + {x^2} + 1}}dx.}\]解:留数理论的一种解答:注意到\[\int_0^\infty {\frac{{\cos \left( {mx} \right)}}{{{x^4...
分类:其他好文   时间:2014-05-02 02:14:53    阅读次数:248
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