此题关键要理解输出的定义 For each test case, you should output a line contains an integer, which is the length of the longest road to be built such that all the villages are connected, and this value is minimum.输出是最小生成树中最长边的长度 对prim算法稍作…
Counting Black Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 8951 Accepted: 5775 题目链接:http://poj.org/problem?id1656
Description
There is a board with 100 *100 grids as shown below. The left-top gird is denoted as (1, 1) a…
Counting Black Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 8951 Accepted: 5775 题目链接:http://poj.org/problem?id1656
Description
There is a board with 100 *100 grids as shown below. The left-top gird is denoted as (1, 1) a…
declare max integer,id integerdeclare cur_rows cursor local for select 主字段,count(*) from 表名 group by 主字段 having count(*) > 1 open cur_rows fetch cur_rows into id,max while fetch_status0 begin select max max -1 set rowcount max delete from 表名 …
源码函数分享GetUrlByXmlHttp XMLHTTP方式下载网页〓〓〓〓〓〓〓〓〓〓GetUrlByXmlHttp函数相关定义声明等 StartPrivate Declare Function GetTickCount Lib "kernel32" () As LongPrivate Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As …
题目链接:http://poj.org/problem?id3258 River HopscotchTime Limit: 2000MS Memory Limit: 65536KTotal Submissions: 3829 Accepted: 1649 Description Every year the cows hold an event featuring a peculiar version of hopscotch that involves carefully …
Phone List
Time Limit: 3000/1000 MS (Java/Others) Memory Limit:32768/32768 K (Java/Others) Total Submission(s): 4602 Accepted Submission(s): 1557
题目连接:http://acm.hdu.edu.cn/showproblem.php?pid1671
Problem Description
Given a list of p…
Arbitrage Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 10954 Accepted: 4608 题目链接:http://poj.org/problem?id2240
Description
Arbitrage is the use of discrepancies in currencyexchange rates to transform one unit of a curren…
Selecting Courses Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 7144 Accepted: 3141 题目链接:http://poj.org/problem?id2239
Description
It is well knownthat it is not easy to select courses in the college, for there is usually…
The Perfect Stall Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 14473 Accepted: 6621 题目链接:http://poj.org/problem?id1274 Description Farmer John completed his new barn just last week, complete with all the latest milking tec…
在开发中,遇到这么一个错误:报错的意思: Long 无法转化成Integer类型.
网上的解释是:这里在Hibernate2.0之前版本list.get(0)返回的是Integer类型.但是在Hibernate3.0以后版本list.get(0)返回的是Long类型.所以在这里不可以由Long…
B - Build TheElectric System
Crawling in process...Crawlingfailed Time Limit:2000MS Memory Limit:65536KB 64bit IO Format:%lld & %llu
Submit Status
题目连接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode2966
Descr…
DistributingBallot Boxes
Time Limit: 20000/10000 MS (Java/Others) Memory Limit:65536/32768 K (Java/Others) Total Submission(s): 310 Accepted Submission(s): 154
题目链接:http://acm.hdu.edu.cn/showproblem.php?pid4190
Problem Description
Tod…
import java.math.BigDecimal; /**
* 由于Java的简单类型不能够精确的对浮点数进行运算,这个工具类提供精
* 确的浮点数运算,包括加减乘除和四舍五入。
*/
public class Arith{ //默认除法运算精度
private static final int DEF_DIV_SCALE 10; //…
在练习实例35的时候看到书上写的代码太多自己不愿意去写,就像能不能换一种方法来编写 更简单一些 ,结果还真成功了 ,我就简单的把握的代码写下来 option Explicit Private Sub Timer_Timer() Staic x as Integer if x8 then x1 xx1 image2.le…
Stockbroker Grapevine Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 20810 Accepted: 11278 题目链接:http://poj.org/problem?id1125 Description
Stockbrokers are known to overreact to rumours. You havebeen contracted to dev…
题目连接:http://poj.org/problem?id2388 Whos in the MiddleTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 22478 Accepted: 12864 Description FJ is surveying his herd to find the most average cow. He wants to know how much milk this medi…
题目链接:http://poj.org/problem?id2262 Goldbachs ConjectureTime Limit: 1000MS Memory Limit: 65536KTotal Submissions: 28046 Accepted: 10797 Description In 1742, Christian Goldbach, a German amateur mathematician, sent a letter to Leonhard Euler …
基本类型包装类最常见的操作就是:用于基本类型和字符之间的转换。 int 转换为 String public static valueOf(int i):返回 int 参数的字符串 表示形式。该方法是 String 类中的方法。 String 转换为 int public static parseInt(String s):将…
如何由Fortran中呼叫MATLAB的M檔案 基本的作法是先將M檔案轉換為.dll檔 再由Fortran去呼叫之 程式是使用 Matlab 6.5.1 Matlab compiler v3.0.1 Compaq Visual Fortran Pro v6.6.0 (CVF) (Compaq bought DEC and HP bought Compaq) 原始m檔案為 function b matlabinc(a) % Incr…
一、废话
先看看这个代码 int a 1;if (a (Integer) 1 && a (Integer) 2) {System.out.println("true");}
在我的idea中,该段代码被标黄了,提示我Condition is always false.
乍一看,确实为false啊,怎么可…
XML Schema如同DTD一样是负责定义和描述XML文档的结构和内容模式。它可以定义XML文档中存在哪些元素和元素之间的关系,并且可以定义元素和属性的数据类型。什么是XML Schema
XML Schema如同DTD一样是负责定义和描述XML文档的结构和内容模式。它可以定义XML文档中存…
这个都知道在哪里用,但是道理不清楚。然后google 了一下,一个比较好的解释虽然是英文,但是很经典。 1.0 is an integer constant
2.\0 is a character constant
3.NULL is a macro(宏) defined in several standard …
(1) 操作符: 第一种情形:比较两个变量的值是否相等。 int a 5;int b 5;System.out.println(ab);//true 第二种情形:比较两个变量是否指向同一个对象。 int[] a new int[3];int[] b new int[3];System.out…
发信人: Mars (FangQ), 信区: MathTools标 题: Compact Fortran 95 Language Summary [ZZ]发信站: 达摩BigGreen BBS (Thu Dec 12 02:42:06 2002), 站内信件
Compact Fortran 95 Language Summary This summary was extracted from various sources. It is not intended to…
Til the Cows Come Home Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 20550 Accepted: 6864 题目链接:http://poj.org/problem?id2387
Description
Bessie is out in the field andwants to get back to the barn to get as much sleep as …
(摘自网络) Q: I came across some structure declarations with colons and numbers next to certain fields, like this: struct record {char *name;int refcount : 4;unsigned dirty : 1;};What gives? A: Those are bit-fields; the number give…
一,需要的库函数和头文件 #include <stdlib.h> int rand(void); void srand(unsigned int seed); 二,函数说明 The rand() function returns a pseudo-random integer between 0 and RAND_MAX. The srand() function sets its argument as the se…
1,Integer对象在内存中的大小
Integer类中包含了一个成员变量,private final int value;
参考书籍《深入理解Java虚拟机 JVM高级特性与最佳实践》中关于java对象内存分布的章节,在hotspot虚拟机中,对象在内存中的存储可以分为3块区域&#…
Tram Time Limit: 1000MS Memory Limit: 30000K Total Submissions: 7135 Accepted: 2583 题目链接:http://poj.org/problem?id1847
Description
Tram network in Zagrebconsists of a number of intersections and rails connecting some of them. Inevery …
页面:toolTip.jsp
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html> <head> <title>Ajax工具条提示</title> <script type"text/javascript"> var xmlHttp; …
/*范例表create table 表1 ( 號數 char(10), 成績 integer, 科目 char(10) ) insert into 表1 select 1,60,数学 union select 1,43,物理 union select 1,100,语文 union select 2,87,语文 union select 2,99,数学 union select 2,89,物理 union select 2,87,语文 *…
COURSES Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 13861 Accepted: 5481 题目链接:http://poj.org/problem?id1469
Description
Consider a group of N students and P courses.Each student visits zero, one or more than one courses…
8题只做出4题比较easy的题,而且做得挺麻烦,看来还要多练练。
AC的题如下
NEUOJ 1112 I Love Apple DescriptionSo many people love apple and there is a problem about apple.An Apple Word is a word that consists of only the letters A, P, L, …
公式: According to the CPU costing model:Cost (#SRds * sreadtim #MRds * mreadtim ~~~~~~~~~~~~~~~~~~~~~~~~~~~~来自于cost-based oracle书中#CPUCycles / cpuspeed) / sreadtimwhere#SRDs - number of single block reads -–单块读取次数#MRDs - number of multi bl…
1、VisitInfo模型 view plaincopy to clipboardprint? Entity Table(name System_VisitInfo) Cache(usageCacheConcurrencyStrategy.NONSTRICT_READ_WRITE) public class VisitInfo implements Serializable { private static final long serialVersionUID 287 &…
GetDiskFreeSpaceEx VB声明 Declare Function GetDiskFreeSpaceEx Lib "kernel32" Alias "GetDiskFreeSpaceExA" (ByVal lpRootPathName As String, lpFreeBytesAvailableToCaller As LARGE_INTEGER, lpTotalNumberOfBytes As LARGE_INTEGER, lpTo…
题目链接:http://poj.org/problem?id1152 An Easy Problem!Time Limit: 1000MS Memory Limit: 10000KTotal Submissions: 7708 Accepted: 1847 Description Have you heard the fact "The base of every normal number system is 10" ? Of course, I am…
//-----下面是一个支持任意表的 SQL SERVER2000分页存储过程 //----分页存储过程开始创建-----------------------------------------------------------------------------------------------------------IF EXISTS (SELECT name FROM sysobjects WHERE name PageShowOne AND…
Java Integer 创建(字节码分析) 文章目录Java Integer 创建(字节码分析)Integer one 10;补充Integer two new Integer(10);Integer three 128;Integer four new Integer(128);今天是2021-7-30,早上的时候看到一篇这…
PGA,即程序全局区(Program Global Area),是Oracle体系机构的重要组成部分。Oracle 数据库对系统内存的总开销即是PGASGA。SGA主要由库缓存(共享SQL区和PL/SQL区)和数据字典缓存组成。而PGA包含客户端连接服务器所派生的服务器进程的集合,每个…
此代码仍然是演示如何使用LINQ to XML的XDocument.Validate()方法根据指定的XSD验证XDocument内容的有效性。示例代码程序首先加载XSD和XML文档到内存,然后对其进行验证,第一次的验证成功地通过。紧接着,修改其中一个客户的编号,再…
//采用BIFF8格式规范二进制流写入XLS文件 function TsycFunctionSet.sycExportDateToExcel(ASender: TDBGrid): Boolean; var arXlsBegin: array[0..5] of Word ; var arXlsEnd: array[0..1] of Word; var arXlsString: array[0..5] of Word; var arXlsNumber: array[0..4] of …
//修改的代码单无 cxcustomdata
function TcxDataControllerSearch.Locate(AItemIndex: Integer; const ASubText: string): Boolean;
begin//.........//增加以下代码 if (ByteType(ASubText,1)<>mbSingleByte) and not Result then //shj add输入的半个中文时 D…
在2009年的JavaOne大会上,Joshua Bloch和Neal Gafter又为我们带来的7道谜题,挺有意思的。大家不妨看看。摘自:Return of the Puzzlers: Schlock and AweJoshua Bloch, Google, Inc.; Neal Gafter, Microsofthttp://developers.sun.com/learni…
在2009年的JavaOne大会上,Joshua Bloch和Neal Gafter又为我们带来的7道谜题,挺有意思的。大家不妨看看。 摘自: Return of the Puzzlers: Schlock and Awe Joshua Bloch, Google, Inc.; Neal Gafter, Microsoft http://developers.sun.co…
每一次选出的数不重复
procedure TfrmMain.RandomGel6; var Int36 array[1..36]of integer; i,j,Num:integer; SL:string; tmp: Integer; begin Randomize; for i:1 to 36 do Int36 : i; Num:36; for i : 1 to 7 do begin tmp : 1Random(Nu…
<% Import NameSpace"System.Net" %>
<script language"VB" runat"server">
Sub Page_Load(Sender As Object, E As EventArgs)
下面首先将新浪网站首页数据下载到字符串strTemp中
Dim wc As New WebClient()
Dim strTemp As String…
select语句中只能使用sql函数对字段进行操作(链接sql server), select 字段1 from 表1 where 字段1.IndexOf("云")1; 这条语句不对的原因是indexof()函数不是sql函数,改成sql对应的函数就可以了。…
C语言提供了几个标准库函数,可以将任意类型(整型、长整型、浮点型等)的数字转换为字符串。以下是用itoa()函数将整数转 换为字符串的一个例子: # include <stdio.h> # include <stdlib.h> void main (void) { int num 100; cha…
Play on Words Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 7173 Accepted: 2519 题目链接:http://poj.org/problem?id1386 Description
Some of the secret doorscontain a very interesting word puzzle. The team of archaeologis…
Johns trip Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 5455 Accepted: 1774 Special Judge 题目链:http://poj.org/problem?id1041 Description
Little Johnny has got a new car. He decided to drivearound the town to v…
题目链接:http://poj.org/problem?id1730 Perfect Pth PowersTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 13099 Accepted: 2990 Description We say that x is a perfect square if, for some integer b, x b2. Similarly, x is a perfect cube …
一)1、查找表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断select * from peoplewhere peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1) 2、删除表中多余的重复记录&#…
<一>在Delphi中静态调用DLL top
调用一个DLL比写一个DLL要容易一些。首先给大家介绍的是静态调用方法,稍后将介绍动态调用方法,并就两种方法做一个比较。同样的,我
们先举一个静态调用的例子。
unit Unit1;
interface
uses Wi…
Philip J. Fry Problem
Time Limit:2000MS Memory Limit:0KB 64bit IO Format:%lld& %llu
Submit Status Practice UVA 12324
Description
题目链接:http://uva.onlinejudge.org/index.php?optioncom_onlinejudge&Itemid8&pageshow_pr…
锁定行的查找 要查找session锁定的行,可以有两种方式:
1. 通过v$session中的row_wait_row#查询 set serverout on size 1000000 set lines 132 declare cursor cur_lock is select sid,id1,id2,inst_id, ctime from gv$loc…
需求:有如下两张表,其中tb_web_app表中数据有十万甚至百万,另,tb_web_app表中的c_category_code关联表tb_system_category中的c_code字段。 CREATE TABLE tb_system_category (id int(11) NOT NULL AUTO_INCREMENT,c_parent_id in…
仅作为个人笔记、记录,可能会有错误,参考请慎重,欢迎指正讨论!
基本类型的包装类型的对象:
public class Test {public static void main(String[] args) {String string "冰墩墩";System.out.println(&q…
情景:批量插入。 附件条件:传入多个参数。 代码: CREATE PROCEDURE batInsertRuiLinkDesc(in versions VARCHAR(4000), in ruidescIds VARCHAR(4000), in versionLength INTEGER, in ruidescIdLength INTEGER)
BEGINDECLARE i int default 0;…
水题,太简单了,就是写代码,想都不用想 Problem DescriptionTo Chinese people, 8 is a lucky number. Now your task is to judge if a number is lucky.We say a number is lucky if it’s a multiple of 8, or the sum of digits that make…
来源:http://www.smth.edu.cn/pc/pccon.php?id860&nid25758&sall
Nine Language Performance Round-up: Benchmarking Math & File I/O
Type: Dell Latitude C640 NotebookCPU: Pentium 4-M 2GHzRAM: 768MBHard Disk: IBM Travelstar 20GB/4500RPMV…
Spring DAO的编写:利用hibernate提供的Query的setFirstResult和setMaxResults方法进行数据分页,程序中以我建立的用户表为例,query的分页机制是以跳指针的方式进行数据读取,这样极大的提高的数据分页程序的响应速度//分页主程序 public…
格式化开销 实际上,将数据写入文件只是输出开销的一部分。另外一个巨大的开销是数据的格式 化。考虑下面的三个例 子,要求其输出如下的行: The square of 5 is 25 方法 1 第一种方法是简单地输出一个固定串,以得到内部I/O开销的概…
C/C++宏大全(转载,原贴地址http://www.cnblogs.com/sevencat/archive/2004/06/10/14872.html)一、标准预定义宏The standard predefined macros are specified by the relevant language standards, so they are available with all compilers that impl…
int i 100;long l 2001;float f300.2;double d12345.119;char username[]"程佩君";char temp[200];char *buf;CString str;_variant_t v1;_bstr_t v2;
一、其它数据类型转换为字符串
短整型(int)itoa(i,temp,10);///将i转换为字符串放入temp中,最后一个数字表示十…
procedure TForm1.Button1Click(Sender: TObject);var i:integer;begin adoquery1.Open ; cxgrid1dbtableview1.DataController.CreateAllItems ;// 根据打开的数据源自动生成column for i:0 to cxgrid1dbtableview1.ColumnCount -1 do begin //showmessage(…
1.英文编码 function Encode7bit(Src:String):String; var Dst:String; i:Integer; CurS,NextS:Byte; TStr:String; begin for i:1 to Length(Src) do begin //当前是字符按8位分组的第8位,无需编码(8个字符已缩短为7个ÿ…
摘要: See many of the major new language features in Delphi released after the Delphi 7 versionLanguage and Compiler Features Since Delphi 7 Inlining Routines can now be marked with the inline directive. This tells the compiler that, instead of actually c…
1.SQL> show sga
Total System Global Area 314572800 bytesFixed Size 1267260 bytesVariable Size 109054404 bytesDatabase Buffers 201326592 bytesRedo Buffers 2924544 bytesSQL>
Total System Global Area SGA总的分配大小Fixed Size 包括了一…
形参如果是数组必须加小括号
如:定义过程 sub em( pay() as Single)
调用过程 em(xu())
按值传递(ByVal):形参和实参占有不同的存储空间,调用过程改变了形参变量的值,实参的值不会受影响。调用结束后…
Highways Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 16037 Accepted: 7460 题目链接:http://poj.org/problem?id2485
Description
The island nation of Flatopiais perfectly flat. Unfortunately, Flatopia has no public highways. So…
The Unique MST Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 14582 Accepted: 5035 题目连接:http://poj.org/problem?id1679
Description
Given a connected undirectedgraph, tell if its minimum spanning tree is unique. Definition …
Android的Surface看的有点头晕,换个口味,下一篇再更 偶然网上看到如下代码:
public class IntegerTest {private Integer a 100;private Integer b 100;private Integer c 200;private Integer d 200;public static void main(String[] …