need to fix an error

.idea/.name

@@ -0,0 +1 @@
+generics

.idea/compiler.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="generics" />
+      </profile>
+    </annotationProcessing>
+    <bytecodeTargetLevel>
+      <module name="generics" target="1.7" />
+    </bytecodeTargetLevel>
+  </component>
+</project>

.idea/libraries/Maven__junit_junit_4_12.xml

@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Maven: junit:junit:4.12">
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>

.idea/libraries/Maven__org_hamcrest_hamcrest_core_1_3.xml

@@ -0,0 +1,13 @@
+<component name="libraryTable">
+  <library name="Maven: org.hamcrest:hamcrest-core:1.3">
+    <CLASSES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar!/" />
+    </CLASSES>
+    <JAVADOC>
+      <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3-javadoc.jar!/" />
+    </JAVADOC>
+    <SOURCES>
+      <root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3-sources.jar!/" />
+    </SOURCES>
+  </library>
+</component>

.idea/misc.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
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+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/classes" />
+  </component>
+</project>

.idea/modules.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/generics.iml" filepath="$PROJECT_DIR$/generics.iml" />
+    </modules>
+  </component>
+</project>

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

.idea/workspace.xml

@@ -0,0 +1,521 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ChangeListManager">
+    <list default="true" id="6a8e162c-afd9-4415-8c4f-40bb1a6f9e53" name="Default Changelist" comment="">
+      <change afterPath="$PROJECT_DIR$/src/main/java/MyArrayList.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/main/java/MySet.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/MyArrayListTest.java" afterDir="false" />
+      <change afterPath="$PROJECT_DIR$/src/test/java/MySetTest.java" afterDir="false" />
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+          <entry key="JAVA" value="5" />
+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.extensions.edit">
+        <counts>
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+        </counts>
+      </usages-collector>
+      <usages-collector id="statistics.file.types.edit">
+        <counts>
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+        </counts>
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+    <option name="RECENT_TEMPLATES">
+      <list>
+        <option value="Class" />
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+  <component name="FindInProjectRecents">
+    <findStrings>
+      <find>mySet</find>
+    </findStrings>
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+  <component name="Git.Settings">
+    <option name="RECENT_GIT_ROOT_PATH" value="$PROJECT_DIR$" />
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+  <component name="IdeDocumentHistory">
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+      <window_info anchor="bottom" id="Version Control" order="0" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Terminal" order="1" />
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+      <window_info anchor="bottom" id="Database Changes" order="3" show_stripe_button="false" />
+      <window_info anchor="bottom" id="Messages" order="4" />
+      <window_info anchor="bottom" id="Message" order="5" />
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+      <window_info active="true" anchor="bottom" id="Run" order="7" visible="true" weight="0.32901135" />
+      <window_info anchor="bottom" id="Debug" order="8" weight="0.4" />
+      <window_info anchor="bottom" id="Cvs" order="9" weight="0.25" />
+      <window_info anchor="bottom" id="Inspection" order="10" weight="0.4" />
+      <window_info anchor="bottom" id="TODO" order="11" />
+      <window_info anchor="right" id="Palette" order="0" />
+      <window_info anchor="right" id="Capture Analysis" order="1" />
+      <window_info anchor="right" id="Database" order="2" />
+      <window_info anchor="right" id="Theme Preview" order="3" />
+      <window_info anchor="right" id="Palette&#9;" order="4" />
+      <window_info anchor="right" id="Maven Projects" order="5" />
+      <window_info anchor="right" id="Commander" internal_type="SLIDING" order="6" type="SLIDING" weight="0.4" />
+      <window_info anchor="right" id="Ant Build" order="7" weight="0.25" />
+      <window_info anchor="right" content_ui="combo" id="Hierarchy" order="8" weight="0.25" />
+    </layout-to-restore>
+  </component>
+  <component name="TypeScriptGeneratedFilesManager">
+    <option name="version" value="1" />
+  </component>
+  <component name="VcsContentAnnotationSettings">
+    <option name="myLimit" value="2678400000" />
+  </component>
+  <component name="XDebuggerManager">
+    <breakpoint-manager>
+      <breakpoints>
+        <line-breakpoint enabled="true" type="java-line">
+          <url>file://$PROJECT_DIR$/src/main/java/MySet.java</url>
+          <line>76</line>
+          <properties />
+          <option name="timeStamp" value="2" />
+        </line-breakpoint>
+      </breakpoints>
+    </breakpoint-manager>
+  </component>
+  <component name="editorHistoryManager">
+    <entry file="file://$PROJECT_DIR$/src/main/java/MyArrayList.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="276">
+          <caret line="34" column="25" lean-forward="true" selection-start-line="34" selection-start-column="25" selection-end-line="34" selection-end-column="25" />
+          <folding>
+            <element signature="imports" expanded="true" />
+            <element signature="e#205#206#0" expanded="true" />
+            <element signature="e#249#250#0" expanded="true" />
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+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/MyArrayListTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="322">
+          <caret line="91" column="1" lean-forward="true" selection-end-line="91" selection-end-column="1" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/MySet.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="183">
+          <caret line="19" selection-start-line="19" selection-end-line="19" />
+          <folding>
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+            <element signature="e#2106#2107#0" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+    <entry file="jar://$MAVEN_REPOSITORY$/junit/junit/4.12/junit-4.12.jar!/org/junit/runners/model/FrameworkMethod.class">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="220">
+          <caret line="56" column="9" lean-forward="true" selection-start-line="56" selection-start-column="9" selection-end-line="56" selection-end-column="9" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/MySetTest.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1290">
+          <caret line="86" selection-start-line="86" selection-end-line="86" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </state>
+      </provider>
+    </entry>
+  </component>
+</project>

generics.iml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_7">
+    <output url="file://$MODULE_DIR$/target/classes" />
+    <output-test url="file://$MODULE_DIR$/target/test-classes" />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+    <orderEntry type="library" name="Maven: junit:junit:4.12" level="project" />
+    <orderEntry type="library" name="Maven: org.hamcrest:hamcrest-core:1.3" level="project" />
+  </component>
+</module>

src/main/java/MyArrayList.java

@@ -0,0 +1,102 @@
+import java.lang.annotation.ElementType;
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+import java.util.Arrays;
+
+public class MyArrayList<E> {
+
+    Object[] myArray;
+
+    public MyArrayList(){
+        this.myArray = new Object[0];
+    }
+
+    public MyArrayList(int size) {
+        this.myArray = new Object[size];
+    }
+
+    public void add(Object element){
+        Object[] newArray = new Object[this.myArray.length + 1];
+        newArray[newArray.length - 1] = element;
+        myArray = newArray;
+    }
+
+    public void add(int index, Object d) {
+        Object[] newArr = new Object[myArray.length + 1];
+        for(int i=0;i<myArray.length + 1;i++)
+        {
+            if(i<index)
+                newArr[i] = myArray[i];
+            else if(i > index)
+                newArr[i] = myArray[i-1];
+            else
+                newArr[i] = d;
+        }
+        myArray = newArr;
+    }
+
+    public Object get(int index){
+        int count = 0;
+        for(Object element : myArray){
+            if(count == index)
+                return element;
+            count++;
+        }
+        return null;
+    }
+
+    public boolean remove(Object remove){
+        boolean check = false;
+        int count = 0;
+        int counter = 0;
+        if(this.size() > 0) {
+            Object[] newArr = new Object[myArray.length - 1];
+            for (Object element : myArray) {
+                if (element.equals(remove) && count < 1) {
+                    count = 1;
+                    check = true;
+                } else {
+                    newArr[counter] = element;
+                    counter++;
+                }
+            }
+        }
+        return check;
+    }
+
+   public Object set(int index, Object element){
+        for(int i=0; i<myArray.length; i++){
+            if(i == index) {
+                myArray[i] = element;
+                return element;
+            }
+        }
+        return null;
+    }
+
+    public void clear(){
+        myArray = new Object[0];
+    }
+
+    public boolean isEmpty(){
+        if(myArray.length == 0)
+            return true;
+        return false;
+    }
+
+    public boolean contains(Object element)
+    {
+        for(int i=0; i<myArray.length; i++){
+            if(myArray[i].equals(element)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public int size(){
+        return myArray.length;
+    }
+
+
+}

src/main/java/MySet.java

@@ -0,0 +1,87 @@
+import java.lang.reflect.Array;
+
+public class MySet<E> {
+    Object[] set;
+
+    public MySet(){
+        this.set = new Object[0];
+    }
+
+    public MySet(int size) {
+        this.set = new Object[size];
+    }
+
+    public void add(Object element){
+        if(!this.contains(element)) {
+            Object[] newArray = new Object[this.size() + 1];
+            newArray[this.size()] = element;
+            set = newArray;
+        }
+    }
+
+    public void add(int index, Object d) {
+        if(!this.contains(d)) {
+            Object[] newArr = new Object[set.length + 1];
+            for (int i = 0; i < set.length; i++) {
+                if (i < index)
+                    newArr[i] = set[i];
+                else if (i > index)
+                    newArr[i - 1] = set[i];
+            }
+            set = newArr;
+        }
+    }
+
+    public Object get(int index){
+        int count = 0;
+        for(Object element : set){
+            if(count == index)
+                return element;
+            count++;
+        }
+        return null;
+    }
+
+    public boolean remove(Object remove){
+        boolean check = false;
+        int count = 0;
+        int counter = 0;
+        if(this.size() > 0) {
+            Object[] newArr = new Object[set.length - 1];
+            for (Object element : set) {
+                if (element.equals(remove) && count < 1) {
+                    count = 1;
+                    check = true;
+                } else {
+                    newArr[counter] = element;
+                    counter++;
+                }
+            }
+        }
+        return check;
+    }
+
+    public void clear(){
+        set = (Object[]) Array.newInstance(this.set.getClass().getComponentType(), 0);
+    }
+
+    public boolean isEmpty(){
+        if(set.length == 0)
+            return true;
+        return false;
+    }
+
+    public boolean contains(Object element)
+    {
+        for(int i=0; i<set.length; i++){
+            if(set[i].equals(element)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public int size(){
+        return this.set.length;
+    }
+}

src/test/java/MyArrayListTest.java

@@ -0,0 +1,92 @@
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+
+public class MyArrayListTest {
+
+    MyArrayList<Object> list = new MyArrayList<>();
+
+    @Test
+    public void testAdd(){
+        Integer n = 3;
+        list.add(n);
+        Assert.assertEquals(1, list.size());
+    }
+
+    @Test
+    public void testAddString(){
+        list = new MyArrayList<>();
+        String s = "xyz";
+        list.add(s);
+        Assert.assertEquals(1, list.size());
+    }
+
+    @Test
+    public void testAddAtIndex(){
+        list.clear();
+        list.add(2);
+        list.add("element");
+        double d = 3.23;
+        list.add(1, d);
+        Assert.assertEquals(3, list.size());
+    }
+
+    @Test
+    public void testGet(){
+        list.add(2);
+        Object actual = list.get(0);
+        Assert.assertEquals(2, actual);
+    }
+
+    @Test
+    public void testRemove(){
+        Integer element = 2;
+        list.add(element);
+        Assert.assertEquals(true, list.remove(element));
+    }
+
+    @Test
+    public void testRemove2(){
+        Integer element = 2;
+        Assert.assertEquals(false, list.remove(element));
+    }
+
+   @Test
+    public void testSet(){
+        Integer element = 3;
+        list.add(element);
+        Assert.assertEquals(element,list.set(0, element));
+    }
+
+    @Test
+    public void testClear(){
+        list.clear();
+        Assert.assertEquals(0, list.size());
+    }
+
+    @Test
+    public void testIsEmpty(){
+        list.clear();
+        Assert.assertEquals(true, list.isEmpty());
+    }
+
+    @Test
+    public void testContains(){
+        Integer n = 5;
+        list.add(n);
+        Assert.assertEquals(true, list.contains(n));
+    }
+
+    @Test
+    public void testSize(){
+        list.clear();
+        Integer n = 5;
+        list.add(n);
+        n = 6;
+        list.add(n);
+        Assert.assertEquals(2, list.size());
+    }
+}

src/test/java/MySetTest.java

@@ -0,0 +1,89 @@
+import org.junit.Assert;
+import org.junit.Test;
+
+public class MySetTest {
+
+        MySet<Object> set = new MySet<>();
+
+        @Test
+        public void testAdd(){
+            Integer n = 3;
+            set.add(n);
+            Assert.assertEquals(1, set.size());
+        }
+
+        @Test
+        public void testAdd2(){
+            Integer n = 3;
+            set.add(n);
+            Assert.assertEquals(1, set.size());
+        }
+
+        @Test
+        public void testAddString(){
+            set = new MySet<>();
+            String s = "xyz";
+            set.add(s);
+            Assert.assertEquals(1, set.size());
+        }
+
+        @Test
+        public void testAddAtIndex(){
+            set.clear();
+            set.add(2);
+            set.add("element");
+            double d = 3.23;
+            set.add(1, d);
+            Assert.assertEquals(3, set.size());
+        }
+
+        @Test
+        public void testGet(){
+            set.add(2);
+            Object actual = set.get(0);
+            Assert.assertEquals(2, actual);
+        }
+
+        @Test
+        public void testRemove(){
+            Integer element = 2;
+            set.add(element);
+            Assert.assertEquals(true, set.remove(element));
+        }
+
+        @Test
+        public void testRemove2(){
+            Integer element = 2;
+            Assert.assertEquals(false, set.remove(element));
+        }
+
+        @Test
+        public void testClear(){
+            set.clear();
+            Assert.assertEquals(0, set.size());
+        }
+
+        @Test
+        public void testIsEmpty(){
+            set.clear();
+            Assert.assertEquals(true, set.isEmpty());
+        }
+
+        @Test
+        public void testContains(){
+            Integer n = 5;
+            set.add(n);
+            Assert.assertEquals(true, set.contains(n));
+        }
+
+        @Test
+        public void testSize(){
+            set.clear();
+            Integer n = 13;
+            set.add(n);
+            n = 6;
+            set.add(n);
+            Assert.assertEquals(2, set.size());
+        }
+
+}