diff --git a/group15/1515_337959725/.classpath b/group15/1515_337959725/.classpath
index d171cd4c12..6a4228528e 100644
--- a/group15/1515_337959725/.classpath
+++ b/group15/1515_337959725/.classpath
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <classpath>
 	<classpathentry kind="src" path="src"/>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/J2SE-1.5"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>
diff --git a/group15/1515_337959725/.project b/group15/1515_337959725/.project
index 8c7c8dd0f7..6730933705 100644
--- a/group15/1515_337959725/.project
+++ b/group15/1515_337959725/.project
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <projectDescription>
-	<name>BasicTest</name>
+	<name>coding0305</name>
 	<comment></comment>
 	<projects>
 	</projects>
diff --git a/group15/1515_337959725/.settings/org.eclipse.jdt.core.prefs b/group15/1515_337959725/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000000..060c5ee3d2
--- /dev/null
+++ b/group15/1515_337959725/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,11 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.5
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.5
diff --git a/group15/1515_337959725/src/com/coderising/array/ArrayUtil.java b/group15/1515_337959725/src/com/coderising/array/ArrayUtil.java
new file mode 100644
index 0000000000..3273e77f7b
--- /dev/null
+++ b/group15/1515_337959725/src/com/coderising/array/ArrayUtil.java
@@ -0,0 +1,184 @@
+package com.coderising.array;
+
+public class ArrayUtil {
+	
+	/**
+	 * ����һ����������a , �Ը������ֵ�����û�
+		���磺 a = [7, 9 , 30, 3]  ,   �û���Ϊ [3, 30, 9,7]
+		���     a = [7, 9, 30, 3, 4] , �û���Ϊ [4,3, 30 , 9,7]
+	 * @param origin
+	 * @return
+	 */
+	public void reverseArray(int[] origin){
+		int a;
+		int length=origin.length;
+		for(int i=0;i<length/2;i++){
+			a=origin[i];
+			origin[i]=origin[length-i-1];
+			origin[length-i-1]=a;
+		}
+	}
+	
+	/**
+	 * ���������µ�һ�����飺   int oldArr[]={1,3,4,5,0,0,6,6,0,5,4,7,6,7,0,5}   
+	 * Ҫ������������ֵΪ0����ȥ��������Ϊ0��ֵ����һ���µ����飬���ɵ�������Ϊ��   
+	 * {1,3,4,5,6,6,5,4,7,6,7,5}  
+	 * @param oldArray
+	 * @return
+	 */
+	
+	public int[] removeZero(int[] oldArray){
+		int[] newArray=new int[oldArray.length];
+		int j=0;
+		for(int i=0;i<oldArray.length;i++){
+			if(oldArray[i]!=0){
+				newArray[j]=oldArray[i];
+				j++;
+			}
+		}
+		return newArray;
+	}
+	
+	/**
+	 * ���������Ѿ�����õ��������飬 a1��a2 ,  ����һ���µ�����a3, ʹ��a3 ����a1��a2 ������Ԫ�أ� ������Ȼ�������
+	 * ���� a1 = [3, 5, 7,8]   a2 = [4, 5, 6,7]    �� a3 Ϊ[3,4,5,6,7,8]    , ע�⣺ �Ѿ��������ظ�
+	 * @param array1
+	 * @param array2
+	 * @return
+	 */
+	
+	public int[] merge(int[] array1, int[] array2){
+		int[] array3=new int[array1.length+array2.length];
+		int i=0,j=0,k=0;
+		while(i<array1.length&&j<array2.length){
+			if(array1[i]<array2[j]){
+				array3[k]=array1[i];
+				i++;
+				k++;
+			}else if(array1[i]>array2[j]){
+				array3[k]=array1[j];
+				j++;
+				k++;
+			}
+		}
+		return  array3;
+	}
+	/**
+	 * ��һ���Ѿ��������ݵ����� oldArray������������չ�� ��չ��������ݴ�СΪoldArray.length + size
+	 * ע�⣬�������Ԫ��������������Ҫ����
+	 * ���� oldArray = [2,3,6] , size = 3,�򷵻ص�������Ϊ
+	 * [2,3,6,0,0,0]
+	 * @param oldArray
+	 * @param size
+	 * @return
+	 */
+	public int[] grow(int [] oldArray,  int size){
+		int[] newArray =new int[oldArray.length+size];
+		int i;
+		for(i=0;i<oldArray.length;i++){
+			newArray[i]=oldArray[i];
+		}
+		for(int j=0;j<size;j++){
+			newArray[i]=0;
+			i++;
+		}
+		return newArray;
+	}
+	
+	/**
+	 * 쳲���������Ϊ��1��1��2��3��5��8��13��21......  ������һ�����ֵ�� ����С�ڸ�ֵ������
+	 * ���磬 max = 15 , �򷵻ص�����Ӧ��Ϊ [1��1��2��3��5��8��13]
+	 * max = 1, �򷵻ؿ����� []
+	 * @param max
+	 * @return
+	 */
+	public int[] fibonacci(int max){
+		int[] a =new int[max];
+		if(max<=1){
+			return null;
+		}else{
+			a[0]=1;
+			a[1]=1;
+			int i=2;
+			while(a[i-1]<max){
+				a[i]=a[i-1]+a[i-2];
+				i++;
+			}
+			return a;
+		}
+	}
+	
+	/**
+	 * ����С�ڸ������ֵmax��������������
+	 * ����max = 23, ���ص�����Ϊ[2,3,5,7,11,13,17,19]
+	 * @param max
+	 * @return
+	 */
+	public int[] getPrimes(int max){
+		int[] a =new int[max/2];
+		if(max<=1){
+			return null;
+		}else{
+			int k=0;
+			boolean flag=false;
+			for(int i=2;i<max;i++){
+				flag=false;
+				for(int j=2;j<i-1;j++){
+					if(i%j==0){
+						flag=true;
+					}
+				}
+				if(!flag){
+					a[k]=i;
+					k++;
+				}
+			}
+		}
+		return a;
+	}
+	
+	/**
+	 * ��ν���������� ��ָ�����ǡ�õ�����������֮�ͣ�����6=1+2+3
+	 * ����һ�����ֵmax�� ����һ�����飬 ��������С��max ����������
+	 * @param max
+	 * @return
+	 */
+	public int[] getPerfectNumbers(int max){
+		int[] a =new int[10];
+		int k=0;
+		int sum=0;
+		for(int i=1;i<max;i++){
+			sum=0;
+			for(int j=1;j<i;j++){
+				if(i%j==0){
+					sum=sum+j;
+				}
+			}
+			if(i==sum){
+				a[k]=i;
+				k++;
+			}
+		}
+		return a;
+	}
+	
+	/**
+	 * ��seperator ������ array����������
+	 * ����array= [3,8,9], seperator = "-"
+	 * �򷵻�ֵΪ"3-8-9"
+	 * @param array
+	 * @param s
+	 * @return
+	 */
+	public String join(int[] array, String seperator){
+		String str = "";
+		for(int i=0;i<array.length-1;i++){
+			str=str+array[i]+seperator;
+		}
+		str=str+array[array.length-1];
+		return str;
+	}
+	
+
+}
+
diff --git a/group15/1515_337959725/src/com/coderising/array/ArrayUtilTest.java b/group15/1515_337959725/src/com/coderising/array/ArrayUtilTest.java
new file mode 100644
index 0000000000..f729815e70
--- /dev/null
+++ b/group15/1515_337959725/src/com/coderising/array/ArrayUtilTest.java
@@ -0,0 +1,90 @@
+package com.coderising.array;
+
+import java.util.Arrays;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+public class ArrayUtilTest {
+	ArrayUtil arrayUtil;
+	@Before
+	public void setUp() throws Exception {
+		arrayUtil =new ArrayUtil();
+	}
+
+	@After
+	public void tearDown() throws Exception {
+	}
+
+	@Test
+	public void testReverseArray() {
+		int[] a1={7, 9, 30, 3,4};
+		int[] a2={7,9,30,3};
+		arrayUtil.reverseArray(a1);
+		arrayUtil.reverseArray(a2);
+		System.out.println("testReverseArray");
+		System.out.println(Arrays.toString(a1));
+		System.out.println(Arrays.toString(a2));
+	}
+
+	@Test
+	public void testRemoveZero() {
+		int oldArr[]={1,3,4,5,0,0,6,6,0,5,4,7,6,7,0,5};
+		int[] newArray = arrayUtil.removeZero(oldArr);
+		System.out.println("testRemoveZero");
+		System.out.println(Arrays.toString(newArray));
+	}
+
+/*	@Test
+	public void testMerge() {
+		int[] a1 = {3, 5, 7,8};   
+		int[] a2 = {4, 5, 6,7};
+		int[] a3 = arrayUtil.merge(a1, a2);
+		System.out.println("testMerge");
+		System.out.println(Arrays.toString(a3));
+	}*/
+
+	@Test
+	public void testGrow() {
+		int[] a1 = {3, 5, 7,8}; 
+		int size=3;
+		int[] a2 = arrayUtil.grow(a1, size);
+		System.out.println("testGrow");
+		System.out.println(Arrays.toString(a2));
+	}
+
+	@Test
+	public void testFibonacci() {
+		int max = 15;
+		int[] a = arrayUtil.fibonacci(max);
+		System.out.println("testFibonacci");
+		System.out.println(Arrays.toString(a));
+	}
+
+	@Test
+	public void testGetPrimes() {
+		int max = 23;
+		int[] a = arrayUtil.getPrimes(max);
+		System.out.println("testGetPrimes");
+		System.out.println(Arrays.toString(a));
+	}
+
+	@Test
+	public void testGetPerfectNumbers() {
+		int max = 80;
+		int[] a = arrayUtil.getPerfectNumbers(max);
+		System.out.println("testGetPerfectNumbers");
+		System.out.println(Arrays.toString(a));
+	}
+
+	@Test
+	public void testJoin() {
+		int[] a1 = {3, 5, 7,8};  
+		String seperator = "-";
+		String a = arrayUtil.join(a1, seperator);
+		System.out.println("testJoin");
+		System.out.println(a);
+	}
+
+}
diff --git a/group15/1515_337959725/src/com/coderising/litestruts/LoginAction.java b/group15/1515_337959725/src/com/coderising/litestruts/LoginAction.java
new file mode 100644
index 0000000000..d06e690172
--- /dev/null
+++ b/group15/1515_337959725/src/com/coderising/litestruts/LoginAction.java
@@ -0,0 +1,39 @@
+package com.coderising.litestruts;
+
+ /**
+ * ����һ������չʾ��¼��ҵ���࣬ ���е��û��������붼��Ӳ����ġ�
+ * @author liuxin
+ *
+ */
+public class LoginAction{
+    private String name ;
+    private String password;
+    private String message;
+
+    public String getName() {
+        return name;
+    }
+
+    public String getPassword() {
+        return password;
+    }
+
+    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";
+    }
+
+    public void setName(String name){
+        this.name = name;
+    }
+    public void setPassword(String password){
+        this.password = password;
+    }
+    public String getMessage(){
+        return this.message;
+    }
+}
diff --git a/group15/1515_337959725/src/com/coderising/litestruts/Struts.java b/group15/1515_337959725/src/com/coderising/litestruts/Struts.java
new file mode 100644
index 0000000000..dcaf1c3f46
--- /dev/null
+++ b/group15/1515_337959725/src/com/coderising/litestruts/Struts.java
@@ -0,0 +1,135 @@
+package com.coderising.litestruts;
+
+import java.io.File;
+import java.io.IOException;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import java.util.Map;
+
+import javax.xml.parsers.DocumentBuilder;
+import javax.xml.parsers.DocumentBuilderFactory;
+import javax.xml.parsers.ParserConfigurationException;
+
+import org.w3c.dom.Document;
+import org.w3c.dom.Element;
+import org.w3c.dom.NamedNodeMap;
+import org.w3c.dom.Node;
+import org.w3c.dom.NodeList;
+import org.xml.sax.SAXException;
+
+
+
+public class Struts {
+
+    @SuppressWarnings("unchecked")
+	public static View runAction(String actionName, Map<String,String> parameters) {
+
+        /*
+         
+		0. ��ȡ�����ļ�struts.xml
+ 		
+ 		1. ����actionName�ҵ����Ӧ��class �� ����LoginAction,   ͨ������ʵ��������������
+		��parameters�е����ݣ����ö����setter������ ����parameters�е������� 
+		("name"="test" ,  "password"="1234") ,     	
+		�Ǿ�Ӧ�õ��� setName��setPassword����
+		
+		2. ͨ��������ö����exectue ������ ����÷���ֵ������"success"
+		
+		3. ͨ�������ҵ����������getter���������� getMessage��,  
+		ͨ�����������ã� ��ֵ�������γ�һ��HashMap , ���� {"message":  "��¼�ɹ�"} ,  
+		�ŵ�View�����parameters
+		
+		4. ����struts.xml�е� <result> ����,�Լ�execute�ķ���ֵ��  ȷ����һ��jsp��  
+		�ŵ�View�����jsp�ֶ��С�
+        
+        */
+    	DocumentBuilderFactory builderFactory = DocumentBuilderFactory.newInstance();
+    	View view = null;
+    	try {
+			DocumentBuilder documentBuilder = builderFactory.newDocumentBuilder();
+			File f = new File("E:/gitProject/coding2017/group15/1515_337959725/src/com/coderising/litestruts/struts.xml");
+			Document document = documentBuilder.parse(f);
+			NodeList actionList = document.getElementsByTagName("action");
+			Node node = null;
+			String className="";
+			for(int i=0;i<actionList.getLength();i++){
+				Node action = actionList.item(i);
+				NamedNodeMap attrs = action.getAttributes();
+				for(int j=0;j<attrs.getLength();j++){
+					String nodeValue = attrs.item(j).getNodeValue();
+					if(actionName.equals(nodeValue)){
+						node=action;
+					}
+				}
+			}
+			NamedNodeMap nodeAtts = node.getAttributes();
+			for(int j=0;j<nodeAtts.getLength();j++){
+				String nodeName =nodeAtts.item(j).getNodeName();
+				if("class".equals(nodeName)){
+					className=nodeAtts.item(j).getNodeValue();
+				}
+			}
+			Class clazz = Class.forName(className);
+			Object obj = clazz.newInstance();
+			String methodName="";
+			for (String key : parameters.keySet()) {
+				methodName="set"+key.substring(0, 1).toUpperCase()+key.substring(1,key.length());
+				Method method= clazz.getMethod(methodName, String.class);
+				method.invoke(obj, parameters.get(key));
+			}
+			Method method1 = clazz.getMethod("execute");
+			String rt = (String)method1.invoke(obj);
+			Method method2 = clazz.getMethod("getMessage");
+			String message = (String)method2.invoke(obj);
+			NodeList childNodes = node.getChildNodes();
+			Node result = null;
+			for(int j=0;j<childNodes.getLength();j++){
+				Node child= childNodes.item(j);
+				if(child.getNodeType()==Node.ELEMENT_NODE){NamedNodeMap attrs = child.getAttributes();
+				for(int k=0;k<attrs.getLength();k++){
+					String nodeValue = attrs.item(k).getNodeValue();
+					if(rt.equals(nodeValue)){
+						result=child;
+					}
+				}}
+			}
+			String jsp = result.getNodeValue();
+			parameters.put("Message", message);
+			view=new View();
+			view.setJsp(jsp);
+			view.setParameters(parameters);
+		} catch (ParserConfigurationException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (SAXException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (IOException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (ClassNotFoundException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (InstantiationException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (IllegalAccessException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (IllegalArgumentException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (InvocationTargetException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (NoSuchMethodException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		} catch (SecurityException e) {
+			// TODO Auto-generated catch block
+			e.printStackTrace();
+		}
+		return view;
+    }    
+
+}
diff --git a/group15/1515_337959725/src/com/coderising/litestruts/StrutsTest.java b/group15/1515_337959725/src/com/coderising/litestruts/StrutsTest.java
new file mode 100644
index 0000000000..2642204b7d
--- /dev/null
+++ b/group15/1515_337959725/src/com/coderising/litestruts/StrutsTest.java
@@ -0,0 +1,44 @@
+package com.coderising.litestruts;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.junit.Assert;
+import org.junit.Test;
+
+
+
+
+
+public class StrutsTest {
+
+	@Test
+	public void testLoginActionSuccess() {
+		
+		String actionName = "login";
+        
+		Map<String,String> params = new HashMap<String,String>();
+        params.put("name","test");
+        params.put("password","1234");
+        
+        
+        View view  = Struts.runAction(actionName,params);        
+        
+        Assert.assertEquals("/jsp/homepage.jsp", view.getJsp());
+        Assert.assertEquals("login successful", view.getParameters().get("message"));
+	}
+
+	@Test
+	public void testLoginActionFailed() {
+		String actionName = "login";
+		Map<String,String> params = new HashMap<String,String>();
+        params.put("name","test");
+        params.put("password","123456"); //�����Ԥ��IJ�һ��
+        
+        View view  = Struts.runAction(actionName,params);        
+        
+        Assert.assertEquals("/jsp/showLogin.jsp", view.getJsp());
+        Assert.assertEquals("login failed,please check your user/pwd", view.getParameters().get("message"));
+	}
+}
+
diff --git a/group15/1515_337959725/src/com/coderising/litestruts/View.java b/group15/1515_337959725/src/com/coderising/litestruts/View.java
new file mode 100644
index 0000000000..07df2a5dab
--- /dev/null
+++ b/group15/1515_337959725/src/com/coderising/litestruts/View.java
@@ -0,0 +1,23 @@
+package com.coderising.litestruts;
+
+import java.util.Map;
+
+public class View {
+	private String jsp;
+	private Map parameters;
+	
+	public String getJsp() {
+		return jsp;
+	}
+	public View setJsp(String jsp) {
+		this.jsp = jsp;
+		return this;
+	}
+	public Map getParameters() {
+		return parameters;
+	}
+	public View setParameters(Map parameters) {
+		this.parameters = parameters;
+		return this;
+	}
+}
diff --git a/group15/1515_337959725/src/com/coderising/litestruts/struts.xml b/group15/1515_337959725/src/com/coderising/litestruts/struts.xml
new file mode 100644
index 0000000000..6f23f0a83d
--- /dev/null
+++ b/group15/1515_337959725/src/com/coderising/litestruts/struts.xml
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<struts>
+    <action name="login" class="com.coderising.litestruts.LoginAction">
+        <result name="success">/jsp/homepage.jsp</result>
+        <result name="fail">/jsp/showLogin.jsp</result>
+    </action>
+    <action name="logout" class="com.coderising.action.LogoutAction">
+    	<result name="success">/jsp/welcome.jsp</result>
+    	<result name="error">/jsp/error.jsp</result>
+    </action>
+</struts>
\ No newline at end of file