diff --git a/.idea/.name b/.idea/.name
new file mode 100644
index 0000000..1f58a0f
--- /dev/null
+++ b/.idea/.name
@@ -0,0 +1 @@
+generics
\ No newline at end of file
diff --git a/.idea/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..c20d346
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,16 @@
+
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\ No newline at end of file
diff --git a/.idea/libraries/Maven__junit_junit_4_12.xml b/.idea/libraries/Maven__junit_junit_4_12.xml
new file mode 100644
index 0000000..d411041
--- /dev/null
+++ b/.idea/libraries/Maven__junit_junit_4_12.xml
@@ -0,0 +1,13 @@
+
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+
\ No newline at end of file
diff --git a/.idea/libraries/Maven__org_hamcrest_hamcrest_core_1_3.xml b/.idea/libraries/Maven__org_hamcrest_hamcrest_core_1_3.xml
new file mode 100644
index 0000000..f58bbc1
--- /dev/null
+++ b/.idea/libraries/Maven__org_hamcrest_hamcrest_core_1_3.xml
@@ -0,0 +1,13 @@
+
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+
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..d30d09e
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,13 @@
+
+
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+
\ No newline at end of file
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..ca63f44
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+
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+
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+
+
+
+
+
+
\ No newline at end of file
diff --git a/.idea/workspace.xml b/.idea/workspace.xml
new file mode 100644
index 0000000..0702f6f
--- /dev/null
+++ b/.idea/workspace.xml
@@ -0,0 +1,675 @@
+
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+
+ true
+ DEFINITION_ORDER
+
+
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+ 1520543082978
+
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+ 1520543082978
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+ 1.8
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/generics.iml b/generics.iml
new file mode 100644
index 0000000..9717c26
--- /dev/null
+++ b/generics.iml
@@ -0,0 +1,16 @@
+
+
+
+
+
+
+
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+
+
+
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+
+
+
\ No newline at end of file
diff --git a/src/main/java/.deleteme b/src/main/java/.deleteme
deleted file mode 100644
index e69de29..0000000
diff --git a/src/main/java/MyArrayList.java b/src/main/java/MyArrayList.java
new file mode 100644
index 0000000..c877149
--- /dev/null
+++ b/src/main/java/MyArrayList.java
@@ -0,0 +1,14 @@
+
+public class MyArrayList extends MyCollection {
+
+ @SuppressWarnings("unchecked")
+ public MyArrayList(){
+ this(0);
+ }
+
+ @SuppressWarnings("unchecked")
+ public MyArrayList(int n){
+ this.data = (T[]) new Object[n];
+ }
+
+}
diff --git a/src/main/java/MyCollection.java b/src/main/java/MyCollection.java
new file mode 100644
index 0000000..7e697e6
--- /dev/null
+++ b/src/main/java/MyCollection.java
@@ -0,0 +1,71 @@
+import java.util.Arrays;
+
+public abstract class MyCollection {
+ protected T[] data;
+
+ public T get(int index){
+ return data[index];
+ }
+
+ public T[] getArray(){
+ return this.data;
+ }
+
+ public int size(){
+ return this.data.length;
+ }
+
+ public void add(T entry){
+ int index = this.data.length;
+ data = Arrays.copyOf(data, index + 1);
+ data[index] = entry;
+ }
+
+ @SuppressWarnings("unchecked")
+ public void clear(){
+ this.data = (T[]) new Object[0];
+ }
+
+ public void remove(T tToRemove){
+ T[] newArray = Arrays.copyOf(this.data, this.data.length - 1);
+ int index = 0;
+ for (T t:this.data) {
+ if (!t.equals(tToRemove)){
+ newArray[index] = t;
+ index++;
+ }
+ }
+ this.data = newArray;
+ }
+
+ public void remove(int targetIndex){
+ T[] newArray = Arrays.copyOf(this.data, this.data.length - 1);
+ int currentIndex = 0;
+ while (currentIndex != targetIndex){
+ newArray[currentIndex] = this.data[currentIndex];
+ currentIndex++;
+ }
+ for (int i = currentIndex; i < data.length-1; i++){
+ newArray[i] = data[i+1];
+ }
+ this.data = newArray;
+ }
+
+ public void set(T[] newArray){
+ this.data = newArray;
+ }
+
+ public boolean contains(T object){
+ for (T t:this.data) {
+ if (t.equals(object)) return true;
+ }
+ return false;
+ }
+
+ public boolean isEmpty(){
+ if (this.size() == 0) return true;
+ return false;
+ }
+
+
+}
diff --git a/src/main/java/MySet.java b/src/main/java/MySet.java
new file mode 100644
index 0000000..a1298de
--- /dev/null
+++ b/src/main/java/MySet.java
@@ -0,0 +1,29 @@
+public class MySet extends MyCollection {
+
+ @SuppressWarnings("unchecked")
+ public MySet(){
+ this.data = (T[]) new Object[0];
+ }
+
+ @Override
+ public void add(T t){
+ if (!this.contains(t)) {
+ super.add(t);
+ }
+ }
+
+ public void add(T... ts){
+ for (T t:ts) {
+ add(t);
+ }
+ }
+
+ public int getHash(){
+ int hash = 0;
+ for (T t:this.data) {
+ hash += t.hashCode();
+ }
+ return hash;
+ }
+
+}
diff --git a/src/test/java/.deleteme b/src/test/java/.deleteme
deleted file mode 100644
index e69de29..0000000
diff --git a/src/test/java/MyArrayListTest.java b/src/test/java/MyArrayListTest.java
new file mode 100644
index 0000000..cb89b19
--- /dev/null
+++ b/src/test/java/MyArrayListTest.java
@@ -0,0 +1,131 @@
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+public class MyArrayListTest {
+ MyArrayList myArrayList;
+
+ @Before
+ public void setup(){
+ myArrayList = new MyArrayList<>();
+ }
+
+ @Test
+ public void constructorWithIntTest(){
+ int expected = 5;
+ myArrayList = new MyArrayList(expected);
+ int actual = myArrayList.size();
+ Assert.assertEquals(expected, actual);
+ }
+
+ @Test
+ public void addTest(){
+ Integer five = 5;
+ myArrayList.add(five);
+ Assert.assertEquals(five, myArrayList.get(0));
+ }
+
+ @Test
+ public void setTest(){
+ Integer one = 1;
+ Integer two = 2;
+ Integer three = 3;
+ Integer four = 4;
+ Integer five = 5;
+ Integer[] expected = new Integer[]{one, two, three, four, five};
+ myArrayList.set(expected);
+ Assert.assertEquals(expected, myArrayList.getArray());
+ }
+
+ @Test
+ public void clearTest(){
+ Integer five = 5;
+ Integer ten = 10;
+ myArrayList.add(five);
+ myArrayList.add(ten);
+ myArrayList.clear();
+ Assert.assertArrayEquals(myArrayList.getArray(), new Integer[0]);
+ }
+
+ @Test
+ public void removeTObjectTest(){
+ Integer one = 1;
+ Integer two = 2;
+ Integer three = 3;
+ Integer four = 4;
+ Integer five = 5;
+ myArrayList.add(one);
+ myArrayList.add(two);
+ myArrayList.add(three);
+ myArrayList.add(four);
+ myArrayList.add(five);
+ myArrayList.remove(two);
+ Assert.assertNotEquals(myArrayList.get(1), two);
+ }
+
+ @Test
+ public void removeIndexTest(){
+ Integer one = 1;
+ Integer two = 2;
+ Integer three = 3;
+ Integer four = 4;
+ Integer five = 5;
+ myArrayList.add(one);
+ myArrayList.add(two);
+ myArrayList.add(three);
+ myArrayList.add(four);
+ myArrayList.add(five);
+ myArrayList.remove(1);
+ Assert.assertNotEquals(myArrayList.get(1), two);
+ }
+
+ @Test
+ public void containsTrueTest(){
+ Integer one = 1;
+ Integer two = 2;
+ Integer three = 3;
+ Integer four = 4;
+ Integer five = 5;
+ myArrayList.add(one);
+ myArrayList.add(two);
+ myArrayList.add(three);
+ myArrayList.add(four);
+ myArrayList.add(five);
+ Assert.assertTrue(myArrayList.contains(one));
+ }
+
+ @Test
+ public void containsFalseTest(){
+ Integer one = 1;
+ Integer two = 2;
+ Integer three = 3;
+ Integer four = 4;
+ Integer five = 5;
+ myArrayList.add(one);
+ myArrayList.add(two);
+ myArrayList.add(four);
+ myArrayList.add(five);
+ Assert.assertFalse(myArrayList.contains(three));
+ }
+
+ @Test
+ public void isEmptyTrueTest(){
+ Integer one = 1;
+ Integer two = 2;
+ Integer three = 3;
+ Integer four = 4;
+ Integer five = 5;
+ myArrayList.add(one);
+ myArrayList.add(two);
+ myArrayList.add(three);
+ myArrayList.add(four);
+ myArrayList.add(five);
+ Assert.assertFalse(myArrayList.isEmpty());
+ }
+
+ @Test
+ public void isEmptyFalseTest(){
+ Assert.assertTrue(myArrayList.isEmpty());
+ }
+
+}
diff --git a/src/test/java/MySetTest.java b/src/test/java/MySetTest.java
new file mode 100644
index 0000000..a4ef48f
--- /dev/null
+++ b/src/test/java/MySetTest.java
@@ -0,0 +1,56 @@
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+public class MySetTest{
+ MySet mySet;
+
+ @Before
+ public void setup(){
+ mySet = new MySet();
+ }
+
+ @Test
+ public void uniqueAddTrueTest(){
+ Integer one = 1;
+ mySet.add(one);
+ Assert.assertTrue(mySet.contains(one));
+ }
+
+ @Test
+ public void uniqueAddFalseTest(){
+ Integer one = 1;
+ mySet.add(one);
+ mySet.add(one);
+ Assert.assertEquals(mySet.size(), 1);
+ }
+
+ @Test
+ public void containsTest(){
+ Integer one = 1;
+ mySet.add(one);
+ Assert.assertTrue(mySet.contains(one));
+ }
+
+ @Test
+ public void hashTest(){
+ String one = "iowheiorhioewh";
+ int expected = one.hashCode();
+ mySet.add(one);
+ int actual = mySet.getHash();
+ Assert.assertEquals(expected, actual);
+ }
+
+ @Test
+ public void varArgsAddTest(){
+ Integer one = 1;
+ Integer two = 2;
+ Integer three = 3;
+ Integer four = 4;
+ Integer five = 5;
+ Integer[] expected = new Integer[]{one, two, three, four, five};
+ mySet.add(one, two, three, four, five);
+ Assert.assertEquals(mySet.getArray(), expected);
+ }
+
+}