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565832157 测试提交 未做完
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package com.coderising.array; | ||
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public class ArrayUtil { | ||
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/** | ||
* 给定一个整形数组a , 对该数组的值进行置换 | ||
例如: a = [7, 9 , 30, 3] , 置换后为 [3, 30, 9,7] | ||
如果 a = [7, 9, 30, 3, 4] , 置换后为 [4,3, 30 , 9,7] | ||
* @param origin | ||
* @return | ||
*/ | ||
public void reverseArray(int[] origin){ | ||
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} | ||
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/** | ||
* 现在有如下的一个数组: int oldArr[]={1,3,4,5,0,0,6,6,0,5,4,7,6,7,0,5} | ||
* 要求将以上数组中值为0的项去掉,将不为0的值存入一个新的数组,生成的新数组为: | ||
* {1,3,4,5,6,6,5,4,7,6,7,5} | ||
* @param oldArray | ||
* @return | ||
*/ | ||
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public int[] removeZero(int[] oldArray){ | ||
return null; | ||
} | ||
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/** | ||
* 给定两个已经排序好的整形数组, a1和a2 , 创建一个新的数组a3, 使得a3 包含a1和a2 的所有元素, 并且仍然是有序的 | ||
* 例如 a1 = [3, 5, 7,8] a2 = [4, 5, 6,7] 则 a3 为[3,4,5,6,7,8] , 注意: 已经消除了重复 | ||
* @param array1 | ||
* @param array2 | ||
* @return | ||
*/ | ||
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public int[] merge(int[] array1, int[] array2){ | ||
return null; | ||
} | ||
/** | ||
* 把一个已经存满数据的数组 oldArray的容量进行扩展, 扩展后的新数据大小为oldArray.length + size | ||
* 注意,老数组的元素在新数组中需要保持 | ||
* 例如 oldArray = [2,3,6] , size = 3,则返回的新数组为 | ||
* [2,3,6,0,0,0] | ||
* @param oldArray | ||
* @param size | ||
* @return | ||
*/ | ||
public int[] grow(int [] oldArray, int size){ | ||
return null; | ||
} | ||
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/** | ||
* 斐波那契数列为:1,1,2,3,5,8,13,21...... ,给定一个最大值, 返回小于该值的数列 | ||
* 例如, max = 15 , 则返回的数组应该为 [1,1,2,3,5,8,13] | ||
* max = 1, 则返回空数组 [] | ||
* @param max | ||
* @return | ||
*/ | ||
public int[] fibonacci(int max){ | ||
return null; | ||
} | ||
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/** | ||
* 返回小于给定最大值max的所有素数数组 | ||
* 例如max = 23, 返回的数组为[2,3,5,7,11,13,17,19] | ||
* @param max | ||
* @return | ||
*/ | ||
public int[] getPrimes(int max){ | ||
return null; | ||
} | ||
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/** | ||
* 所谓“完数”, 是指这个数恰好等于它的因子之和,例如6=1+2+3 | ||
* 给定一个最大值max, 返回一个数组, 数组中是小于max 的所有完数 | ||
* @param max | ||
* @return | ||
*/ | ||
public int[] getPerfectNumbers(int max){ | ||
return null; | ||
} | ||
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/** | ||
* 用seperator 把数组 array给连接起来 | ||
* 例如array= [3,8,9], seperator = "-" | ||
* 则返回值为"3-8-9" | ||
* @param array | ||
* @param s | ||
* @return | ||
*/ | ||
public String join(int[] array, String seperator){ | ||
return null; | ||
} | ||
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} |
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group23/565832157/src/com/coderising/download/DownloadThread.java
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package com.coderising.download; | ||
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import com.coderising.download.api.Connection; | ||
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public class DownloadThread extends Thread{ | ||
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Connection conn; | ||
int startPos; | ||
int endPos; | ||
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public DownloadThread( Connection conn, int startPos, int endPos){ | ||
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this.conn = conn; | ||
this.startPos = startPos; | ||
this.endPos = endPos; | ||
} | ||
public void run(){ | ||
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} | ||
} |
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group23/565832157/src/com/coderising/download/FileDownloader.java
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package com.coderising.download; | ||
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import com.coderising.download.api.Connection; | ||
import com.coderising.download.api.ConnectionException; | ||
import com.coderising.download.api.ConnectionManager; | ||
import com.coderising.download.api.DownloadListener; | ||
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public class FileDownloader { | ||
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String url; | ||
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DownloadListener listener; | ||
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ConnectionManager cm; | ||
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public FileDownloader(String _url) { | ||
this.url = _url; | ||
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} | ||
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public void execute(){ | ||
// 在这里实现你的代码, 注意: 需要用多线程实现下载 | ||
// 这个类依赖于其他几个接口, 你需要写这几个接口的实现代码 | ||
// (1) ConnectionManager , 可以打开一个连接,通过Connection可以读取其中的一段(用startPos, endPos来指定) | ||
// (2) DownloadListener, 由于是多线程下载, 调用这个类的客户端不知道什么时候结束,所以你需要实现当所有 | ||
// 线程都执行完以后, 调用listener的notifiedFinished方法, 这样客户端就能收到通知。 | ||
// 具体的实现思路: | ||
// 1. 需要调用ConnectionManager的open方法打开连接, 然后通过Connection.getContentLength方法获得文件的长度 | ||
// 2. 至少启动3个线程下载, 注意每个线程需要先调用ConnectionManager的open方法 | ||
// 然后调用read方法, read方法中有读取文件的开始位置和结束位置的参数, 返回值是byte[]数组 | ||
// 3. 把byte数组写入到文件中 | ||
// 4. 所有的线程都下载完成以后, 需要调用listener的notifiedFinished方法 | ||
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// 下面的代码是示例代码, 也就是说只有一个线程, 你需要改造成多线程的。 | ||
Connection conn = null; | ||
try { | ||
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conn = cm.open(this.url); | ||
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int length = conn.getContentLength(); | ||
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new DownloadThread(conn,0,length-1).start(); | ||
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} catch (ConnectionException e) { | ||
e.printStackTrace(); | ||
}finally{ | ||
if(conn != null){ | ||
conn.close(); | ||
} | ||
} | ||
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} | ||
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public void setListener(DownloadListener listener) { | ||
this.listener = listener; | ||
} | ||
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public void setConnectionManager(ConnectionManager ucm){ | ||
this.cm = ucm; | ||
} | ||
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public DownloadListener getListener(){ | ||
return this.listener; | ||
} | ||
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} |
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group23/565832157/src/com/coderising/download/FileDownloaderTest.java
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package com.coderising.download; | ||
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import org.junit.After; | ||
import org.junit.Before; | ||
import org.junit.Test; | ||
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import com.coderising.download.api.ConnectionManager; | ||
import com.coderising.download.api.DownloadListener; | ||
import com.coderising.download.impl.ConnectionManagerImpl; | ||
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public class FileDownloaderTest { | ||
boolean downloadFinished = false; | ||
@Before | ||
public void setUp() throws Exception { | ||
} | ||
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@After | ||
public void tearDown() throws Exception { | ||
} | ||
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@Test | ||
public void testDownload() { | ||
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String url = "http://localhost:8080/test.jpg"; | ||
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FileDownloader downloader = new FileDownloader(url); | ||
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ConnectionManager cm = new ConnectionManagerImpl(); | ||
downloader.setConnectionManager(cm); | ||
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downloader.setListener(new DownloadListener() { | ||
@Override | ||
public void notifyFinished() { | ||
downloadFinished = true; | ||
} | ||
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}); | ||
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downloader.execute(); | ||
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// 等待多线程下载程序执行完毕 | ||
while (!downloadFinished) { | ||
try { | ||
System.out.println("还没有下载完成,休眠五秒"); | ||
//休眠5秒 | ||
Thread.sleep(5000); | ||
} catch (InterruptedException e) { | ||
e.printStackTrace(); | ||
} | ||
} | ||
System.out.println("下载完成!"); | ||
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} | ||
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} |
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group23/565832157/src/com/coderising/download/api/Connection.java
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package com.coderising.download.api; | ||
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import java.io.IOException; | ||
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public interface Connection { | ||
/** | ||
* 给定开始和结束位置, 读取数据, 返回值是字节数组 | ||
* @param startPos 开始位置, 从0开始 | ||
* @param endPos 结束位置 | ||
* @return | ||
*/ | ||
public byte[] read(int startPos,int endPos) throws IOException; | ||
/** | ||
* 得到数据内容的长度 | ||
* @return | ||
*/ | ||
public int getContentLength(); | ||
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/** | ||
* 关闭连接 | ||
*/ | ||
public void close(); | ||
} |
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group23/565832157/src/com/coderising/download/api/ConnectionException.java
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package com.coderising.download.api; | ||
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public class ConnectionException extends Exception { | ||
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} |
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group23/565832157/src/com/coderising/download/api/ConnectionManager.java
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package com.coderising.download.api; | ||
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public interface ConnectionManager { | ||
/** | ||
* 给定一个url , 打开一个连接 | ||
* @param url | ||
* @return | ||
*/ | ||
public Connection open(String url) throws ConnectionException; | ||
} |
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group23/565832157/src/com/coderising/download/api/DownloadListener.java
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package com.coderising.download.api; | ||
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public interface DownloadListener { | ||
public void notifyFinished(); | ||
} |
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group23/565832157/src/com/coderising/download/impl/ConnectionImpl.java
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package com.coderising.download.impl; | ||
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import java.io.IOException; | ||
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import com.coderising.download.api.Connection; | ||
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public class ConnectionImpl implements Connection{ | ||
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@Override | ||
public byte[] read(int startPos, int endPos) throws IOException { | ||
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return null; | ||
} | ||
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@Override | ||
public int getContentLength() { | ||
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return 0; | ||
} | ||
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@Override | ||
public void close() { | ||
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} | ||
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} |
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group23/565832157/src/com/coderising/download/impl/ConnectionManagerImpl.java
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package com.coderising.download.impl; | ||
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import com.coderising.download.api.Connection; | ||
import com.coderising.download.api.ConnectionException; | ||
import com.coderising.download.api.ConnectionManager; | ||
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public class ConnectionManagerImpl implements ConnectionManager { | ||
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@Override | ||
public Connection open(String url) throws ConnectionException { | ||
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return null; | ||
} | ||
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} |
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group23/565832157/src/com/coderising/litestruts/LoginAction.java
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package com.coderising.litestruts; | ||
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/** | ||
* 这是一个用来展示登录的业务类, 其中的用户名和密码都是硬编码的。 | ||
* @author liuxin | ||
* | ||
*/ | ||
public class LoginAction{ | ||
private String name ; | ||
private String password; | ||
private String message; | ||
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public String getName() { | ||
return name; | ||
} | ||
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public String getPassword() { | ||
return password; | ||
} | ||
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public String execute(){ | ||
if("test".equals(name) && "1234".equals(password)){ | ||
this.message = "login successful"; | ||
return "success"; | ||
} | ||
this.message = "login failed,please check your user/pwd"; | ||
return "fail"; | ||
} | ||
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public void setName(String name){ | ||
this.name = name; | ||
} | ||
public void setPassword(String password){ | ||
this.password = password; | ||
} | ||
public String getMessage(){ | ||
return this.message; | ||
} | ||
} |
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