数据表中比如有20条数据读取前5条数据select top 5 * from 表 order by id desc读取前5条数据后的5条数据(就是查询前10条记录,取后面5个)select top 5 * from 表 whereid not in (select top 5 id from 表)=...
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数据库 时间:
2015-03-18 15:50:34
阅读次数:
156
题意:
在4*4的格子中有9个窗口,窗口会覆盖它之下的窗口,问是否存在一个窗口放置的顺序使得最后的结果与输入相同。
分析:
在数据规模较小且不需要剪枝的情况下可以暴力(思路清晰代码简单),暴力一般分为枚举子集(for(s=0;s
代码:
//poj 2585
//sep9
#include
#include
using namespace std;
int order[10];
in...
1.sql语句的执行(并非简单的sql语句就可以,见注释)SqlConnection Conn=new SqlConnection(data.strconn); Conn.Open(); string SqlStr="select * from teacher order by teacher...
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其他好文 时间:
2015-03-18 13:45:14
阅读次数:
110
Made a stupid bug....... When reverse the vector, stop it at mid. Otherwise, it will swap back......Mark!!!!!!!! 1 /** 2 * Definition for binary tree....
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其他好文 时间:
2015-03-18 10:23:29
阅读次数:
120
Basic question. Use a queue to store Node, use two numbers to record current level node numbers and next level node numbers. 1 /** 2 * Definition for....
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其他好文 时间:
2015-03-18 08:58:27
阅读次数:
105
Same with inorder.1. recursive: 1 /** 2 * Definition for binary tree 3 * struct TreeNode { 4 * int val; 5 * TreeNode *left; 6 * TreeN...
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其他好文 时间:
2015-03-18 08:58:05
阅读次数:
131
Still 3 methods:Same with inorder, but post order is a little different. We need to treat it as reverse result of preorder.So we go to right branch fi...
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其他好文 时间:
2015-03-18 08:57:58
阅读次数:
132
This question is almost same as the previous one.I just use a stack (another vector) of vector to store the level result. Then reverse it. 1 /** 2 * ....
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其他好文 时间:
2015-03-18 08:56:41
阅读次数:
155
题目链接:http://poj.org/problem?id=3264For the daily milking, Farmer John'sNcows (1 ≤N≤ 50,000) always line up in the same order. One day Farmer John deci...
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其他好文 时间:
2015-03-18 01:06:40
阅读次数:
139
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...
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其他好文 时间:
2015-03-17 23:20:05
阅读次数:
140