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+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/main/java/MyArrayList.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="1815">
+          <caret line="121" column="6" selection-start-line="121" selection-start-column="6" selection-end-line="121" selection-end-column="6" />
+          <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="510">
+          <caret line="37" column="26" selection-start-line="37" selection-start-column="26" selection-end-line="37" selection-end-column="26" />
+        </state>
+      </provider>
+    </entry>
+    <entry file="file://$PROJECT_DIR$/src/test/java/TestMyArrayList.java">
+      <provider selected="true" editor-type-id="text-editor">
+        <state relative-caret-position="105">
+          <caret line="7" column="28" selection-start-line="7" selection-start-column="28" selection-end-line="7" selection-end-column="28" />
+          <folding>
+            <element signature="imports" expanded="true" />
+          </folding>
+        </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="60">
+          <caret line="9" selection-start-line="9" selection-end-line="9" />
+        </state>
+      </provider>
+    </entry>
+  </component>
+  <component name="masterDetails">
+    <states>
+      <state key="ArtifactsStructureConfigurable.UI">
+        <settings>
+          <artifact-editor />
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="FacetStructureConfigurable.UI">
+        <settings>
+          <last-edited>No facets are configured</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="GlobalLibrariesConfigurable.UI">
+        <settings>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="JdkListConfigurable.UI">
+        <settings>
+          <last-edited>1.8</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ModuleStructureConfigurable.UI">
+        <settings>
+          <last-edited>generics</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+                <option value="0.6" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ProjectJDKs.UI">
+        <settings>
+          <last-edited>1.8</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+      <state key="ProjectLibrariesConfigurable.UI">
+        <settings>
+          <last-edited>Maven: junit:junit:4.12</last-edited>
+          <splitter-proportions>
+            <option name="proportions">
+              <list>
+                <option value="0.2" />
+              </list>
+            </option>
+          </splitter-proportions>
+        </settings>
+      </state>
+    </states>
+  </component>
+</project>

generics.iml

+<?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

+
+import java.util.Arrays;
+
+import java.util.List;
+
+
+public class MyArrayList<T> {
+     private T[] arr;
+     private int size;
+
+     public MyArrayList() { this(0); }
+
+     public MyArrayList(int capacity) {
+          arr = (T[])new Object[capacity];
+          size = 0;
+     }
+
+     public Integer size(){ return size; }
+
+     public void setSize(int size){ this.size = size; }
+
+     public boolean isEmpty(){ return (size == 0); }
+
+     public void clear(){
+          arr = (T[])new Object[0];
+          setSize(0);
+     }
+
+     public void add(T ...valsToAdd){
+          T[] merge = Arrays.copyOf(arr,(size + valsToAdd.length));
+          for(int i = size, j = 0; i < merge.length; i++, j++, size++)
+               merge[i] = valsToAdd[j];
+          arr = merge;
+     }
+
+     public T[] append(T val){
+          T[] newArr = Arrays.copyOf(arr,size + 1);
+          newArr[size] = val;
+          size++;
+          return newArr;
+     }
+
+     public void add(int index, T valToAdd) throws IllegalArgumentException{
+          try {
+               addOnCondition(index, valToAdd);
+          } catch (IllegalArgumentException e){
+               System.out.println("Illegal argument Exception");
+          }
+     }
+
+     private void addOnCondition(int index, T valToAdd) {
+          if (size == 0 && index == 0)
+               add(valToAdd);
+          else if(index >= size)
+               arr = append(valToAdd);
+          else
+               arr = addValToArray(index, valToAdd);
+     }
+
+     private T[] addValToArray(int index, T valToAdd) {
+          T[] firstArr = Arrays.copyOf(arr,size + 1);
+          T[] secondArr = Arrays.copyOfRange(arr,index,size);
+          concatArrays(index, valToAdd, firstArr, secondArr);
+          return firstArr;
+     }
+
+     private void concatArrays(int index, T valToAdd, T[] firstArr, T[] secondArr) {
+          for (int i = 0, j = 0; i < firstArr.length; i++) {
+               if (i == index)
+                    firstArr[index] = valToAdd;
+               else if(i > index){
+                    firstArr[i] = secondArr[j];
+                    j++;
+               }
+          }
+     }
+
+     public T get(int index){
+          T getVal = null;
+          for (int i = 0; i < size; i++)
+               if(i == index)
+                    getVal = arr[i];
+          return getVal;
+     }
+
+     public boolean contains(T valToFind){
+          for(T val : arr)
+               if(val.equals(valToFind))
+                    return true;
+          return false;
+     }
+
+     public void remove(T valueToRemove){
+          Integer occ = getNumberOfOccurrences(valueToRemove);
+          T[] array = Arrays.copyOf(arr, size-occ);
+          evalRemove(valueToRemove, array);
+          arr = array;
+     }
+
+     public Integer getNumberOfOccurrences(T valueToEvaluate){
+          Integer count = 0;
+          for(int i = 0; i < size; i++)
+               count += (valueToEvaluate.equals(arr[i])) ? 1 : 0;
+          return count;
+     }
+
+     private void evalRemove(T valueToRemove, T[] array){
+          int i = 0;
+          for(T val : arr)
+               if(!val.equals(valueToRemove)){
+                    array[i] = val;
+                    i++;
+               }
+     }
+
+     public void set(int index, T updatedVal) throws ArrayIndexOutOfBoundsException{
+          try{
+               arr[index] = updatedVal;
+          } catch (ArrayIndexOutOfBoundsException e) {
+               System.out.println("Index not contained in array list...");
+          }
+     }
+
+}

src/main/java/MySet.java

+
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Set;
+
+public class MySet <T> {
+    private T[] ogArr;
+    private int size;
+
+    public MySet() {
+        this.ogArr = (T[]) new Object[0];
+        this.size = 0;
+    }
+
+    public int size() { return size; }
+
+    public T get(int index) { return ogArr[index]; }
+
+    public boolean isEmpty() { return (size() == 0); }
+
+    public void clear() {
+        ogArr =  Arrays.copyOf(ogArr,0);
+        size = 0;
+    }
+
+    public void add(T value) {
+        if (!contains(value)) {
+            T[] arr = Arrays.copyOf(ogArr,ogArr.length+1);
+            for (int i = 0; i < ogArr.length; i++)
+                arr[i] = ogArr[i];
+            arr[arr.length - 1] = value;
+            ogArr = arr;
+            size = arr.length;
+        }
+    }
+
+    public void addAll(Collection<? extends T> collection) {
+        for (T item : collection)
+            if (!contains(item))
+                this.add(item);
+    }
+
+    public boolean contains(T value) {
+        for (T item : ogArr)
+            if (item.equals(value))
+                return true;
+        return false;
+    }
+
+    public boolean containsAll(Collection<? extends T> collection) {
+        int trueVals = 0;
+        for (T item : collection)
+            for (int i = 0; i < ogArr.length ; i++)
+                if (item.equals(ogArr[i]))
+                    trueVals++;
+        return (trueVals == collection.size());
+    }
+}
+
+

src/test/java/MySetTest.java

+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
+public class MySetTest {
+
+    MySet<Integer> set = new MySet<>();
+
+    @Test
+    public void testAdd() {
+        // : When
+        set.add(1);
+        set.add(2);
+        set.add(3);
+        set.add(3);
+        Integer expected = 3;
+        Integer actual = set.size();
+        // : Then
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testAddAll() {
+        // : Given
+        ArrayList<Integer> addArray = new ArrayList<>();
+        // : When
+        set.add(1);
+        set.add(2);
+        addArray.add(3);
+        addArray.add(3);
+        addArray.add(4);
+        set.addAll(addArray);
+        int expected = 4;
+        int actual = set.size();
+        // : Then
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testClear() {
+        // : When
+        set.add(1);
+        set.add(2);
+        set.clear();
+        int expected = 0;
+        int actual = set.size();
+        // : Then
+        Assert.assertEquals(expected, actual);
+    }
+
+    @Test
+    public void testContains() {
+        // : When
+        set.add(1);
+        set.add(2);
+        // : Then
+        Assert.assertTrue(set.contains(1));
+    }
+
+    @Test
+    public void testContainsAll() {
+        // : Given
+        ArrayList<Integer> list = new ArrayList<>();
+        // : Then
+        set.add(1);
+        set.add(2);
+        set.add(3);
+        list.add(2);
+        list.add(3);
+        // : Then
+        Assert.assertTrue(set.containsAll(list));
+    }
+
+    @Test
+    public void testIsEmpty() {
+        Assert.assertTrue(set.isEmpty());
+    }
+}
+
+
+
+
+    
+

src/test/java/TestMyArrayList.java

+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import java.lang.reflect.Array;
+import java.util.ArrayList;
+
+public class TestMyArrayList {
+
+    @Test
+    public void testAddVarArgs() {
+        // : Given
+        MyArrayList<Long> arrList = new MyArrayList<>();
+        // : When
+        Integer exp = 2;
+        arrList.add(4L, 10L);
+        Integer act = arrList.size();
+        // : Then
+        Assert.assertEquals(exp, act);
+    }
+
+    @Test
+    public void testAddVarArgsCap() {
+        // : Given
+        MyArrayList<Long> arrList = new MyArrayList<>(10);
+        // : When
+        Integer exp = 2;
+        arrList.add(4L, 10L);
+        Integer act = arrList.size();
+        // : Then
+        Assert.assertEquals(exp, act);
+    }
+
+    @Test
+    public void testAddAtIndex0(){
+        // : Given
+        MyArrayList<Long> arrList = new MyArrayList<>();
+        // : When
+        Long addedVal = 8L;
+        arrList.add(0,addedVal);
+        Long act = arrList.get(0);
+        // : Then
+        Assert.assertEquals(act, addedVal);
+    }
+
+    @Test
+    public void testAppend(){
+        // : Given
+        MyArrayList<Long> arrList = new MyArrayList<>();
+        // : When
+        Long addedVal = 8L;
+        arrList.add(4L,10L,12L,15L);
+        arrList.add(4,addedVal);
+        Long act = arrList.get(4);
+        // : Then
+        Assert.assertEquals(act, addedVal);
+    }
+
+    @Test
+    public void testAddAtIndex(){
+        // : Given
+        MyArrayList<Long> arrList = new MyArrayList<>();
+        // : When
+        Long addedVal = 8L;
+        arrList.add(4L,10L,12L,15L);
+        arrList.add(2,addedVal);
+        Long act = arrList.get(2);
+        // : Then
+        Assert.assertEquals(act, addedVal);
+    }
+
+    @Test
+    public void testGet(){
+        // : Given
+        MyArrayList<String> arrList = new MyArrayList<>();
+        // : When
+        String exp = "def";
+        arrList.add("abc","def","ghi");
+        String act = arrList.get(1);
+        // : Then
+        Assert.assertEquals(exp, act);
+    }
+
+    @Test
+    public void testContains(){
+        // : Given
+        MyArrayList<Double> arrList = new MyArrayList<>();
+        // : When
+        arrList.add(1.0,2.0,5.0,10.0);
+        boolean act = arrList.contains(5.0);
+        // : Then
+        Assert.assertTrue(act);
+    }
+
+    @Test
+    public void testRemove(){
+        // : Given
+        MyArrayList<Float> arrList = new MyArrayList<>();
+        // : When
+        arrList.add(1.0f,2.0f,5.0f,10.0f);
+        arrList.remove(5.0f);
+        boolean act = arrList.contains(5.0f);
+        // : Then
+        Assert.assertFalse(act);
+    }
+
+    @Test
+    public void testClear(){
+        // : Given
+        MyArrayList<Double> arrList = new MyArrayList<>();
+        Integer exp = 0;
+        // : When
+        arrList.add(1.0,2.0,5.0,10.0);
+        arrList.clear();
+        Integer act = arrList.size();
+        // : Then
+        Assert.assertEquals(exp,act);
+    }
+
+    @Test
+    public void testIsEmptyWithFullList(){
+        // : Given
+        MyArrayList<Float> arrList = new MyArrayList<>();
+        // : When
+        arrList.add(1.0f,2.0f,5.0f,10.0f);
+        boolean act = arrList.isEmpty();
+        // : Then
+        Assert.assertFalse(act);
+    }
+
+    @Test
+    public void testIsEmptyWithEmptyList(){
+        // : Given
+        MyArrayList<Float> arrList = new MyArrayList<>();
+        // : When
+        arrList.add(1.0f,2.0f,5.0f,10.0f);
+        arrList.clear();
+        boolean act = arrList.isEmpty();
+        // : Then
+        Assert.assertTrue(act);
+    }
+
+    @Test
+    public void testSet(){
+        // : Given
+        MyArrayList<Integer> arrList = new MyArrayList<>();
+        // : When
+        arrList.add(2,4,5,8,10);
+        arrList.set(2,6);
+        Integer act = arrList.get(2);
+        Integer exp = 6;
+        // : Then
+        Assert.assertEquals(act,exp);
+    }
+}