done

src/main/java/org/zipcoder/store/Cart.java

     public long getId(){
         return this.id;
     }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) return true;
+        if (o == null || getClass() != o.getClass()) return false;
+        Cart cart = (Cart) o;
+        return id == cart.id;
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(id);
+    }
 }

src/main/java/org/zipcoder/store/ListMap.java

 
     @Override
     public int size() {
-        return -1;
+        return entries.size();
     }
 
     @Override
     public boolean isEmptry() {
-        return false;
+        if (size() > 0) return false;
+        return true;
     }
 
     @Override
     public Cart get(User key) {
-        // find the cart associate with the key
+        for (Entry e : entries) {
+            if (e.getKey().equals(key)) return e.getValue();
+        }
         return null;
     }
 
     @Override
     public void put(User key, Cart value) {
-        // add the key, value entry to the entries list
+        boolean contains = false;
+        for (Entry e : entries)
+            if (e.getKey().equals(key)) {
+                e.setValue(value);
+                contains = true;
+                break;
+            }
+        if (contains == false) entries.add(new Entry(key, value));
     }
 
 
     @Override
     public List<User> getKeys() {
-        // get all the keys in the map
-        return null;
+        List<User> list = new ArrayList<>();
+        entries.forEach(e ->list.add(e.getKey()));
+        return list;
     }
 
     @Override
     public List<Cart> getValues() {
-        // get all the values in the map
-        return null;
+        List<Cart> list = new ArrayList<>();
+        entries.forEach(e ->list.add(e.getValue()));
+        return list;
     }
 
     @Override
     public Cart remove(User key) {
+        //remove and return cart
+        for (Entry e : entries)
+            if (e.getKey().equals(key)){
+                Cart c = e.getValue();
+                e.setValue(null);
+                return c;
+            }
         return null;
     }
 }

src/main/java/org/zipcoder/store/MyHashMap.java

 
     @Override
     public int size() {
-        return -1;
+        int size = 0;
+        for(List<Entry> l : entries){
+            size+=l.size();
+        }
+        return size;
     }
 
     @Override
     public boolean isEmptry() {
-        return false;
+        if (size() > 0) return false;
+        return true;
     }
 
     @Override
     public Cart get(User key) {
+        for (Entry e : entries[bucketIndex(key)]){
+            if (e.getKey().equals(key)) return e.getValue();
+        }
         return null;
     }
 
     @Override
     public void put(User key, Cart value) {
+        boolean contains = false;
+        List<Entry> l = entries[bucketIndex(key)];
 
+        for (Entry e : l)
+            if (e.getKey().equals(key)) {
+                e.setValue(value);
+                contains = true;
+                break;
+            }
+        if (contains == false) l.add(new Entry(key, value));
     }
 
     @Override
     public List<User> getKeys() {
-        return null;
+        List<User> list = new ArrayList<>();
+        for(List<Entry> l : entries)
+            l.forEach(e -> list.add(e.getKey()));
+        return list;
     }
 
     @Override
     public List<Cart> getValues() {
-        return null;
+        List<Cart> list = new ArrayList<>();
+        for(List<Entry> l : entries)
+            l.forEach(e -> list.add(e.getValue()));
+        return list;
     }
 
     @Override
     public Cart remove(User key) {
+        for (Entry e : entries[bucketIndex(key)])
+            if (e.getKey().equals(key)){
+                Cart c = e.getValue();
+                e.setValue(null);
+                return c;
+            }
         return null;
     }
 

src/main/java/org/zipcoder/store/MyMap.java

     /**
      * @return true if the map has one or more item in it. False otherwise.
      */
+    //other way around?
     public boolean isEmptry();
 
     /**

src/main/java/org/zipcoder/store/User.java

     public void setName(String name) {
         this.name = name;
     }
+
+    public Boolean equals(User u){
+        if (this == u) return true;
+        if (u == null || getClass() != u.getClass()) return false;
+        if (u.name == null && this.name == null) {
+            if (u.id == this.id) return true;
+        } else if (u.id == this.id && u.name.equals(this.name)) return true;
+        return false;
+    }
+
+    public int hashCode(){
+        return Objects.hash(id,name);
+    }
 }

src/test/java/org/zipcoder/store/ListMapTest.java

         Assert.assertTrue(values.contains(cart2));
     }
 
-//    I commented this out because it takes a long time to run. Uncomment it when implement your put method, uncomment this test
-//    @Test
-//    public void testPutAndGet_WithManyItems(){
-//        // Given
-//        int numberOfEntries = 70000;
-//
-//        for (int i = 0; i < numberOfEntries; i++) {
-//            myMap.put(new User(i), new Cart(i));
-//        }
-//
-//
-//        for (int i = 0; i < numberOfEntries; i++) {
-//            // When
-//            Cart actualCart = myMap.get(new User(i));
-//            Cart expectedCart = new Cart(i);
-//
-//            // Then
-//            Assert.assertEquals(actualCart, expectedCart);
-//        }
-//    }
+  //  I commented this out because it takes a long time to run. Uncomment it when implement your put method, uncomment this test
+    @Test
+    public void testPutAndGet_WithManyItems(){
+        // Given
+        int numberOfEntries = 70000;
+
+        for (int i = 0; i < numberOfEntries; i++) {
+            myMap.put(new User(i), new Cart(i));
+        }
+
+
+        for (int i = 0; i < numberOfEntries; i++) {
+            // When
+            Cart actualCart = myMap.get(new User(i));
+            Cart expectedCart = new Cart(i);
+
+            // Then
+            Assert.assertEquals(actualCart, expectedCart);
+        }
+    }
 
 //    BONUS
-//    @Test
-//    public void testRemove(){
-//        // Given
-//        User user1 = new User("Lena");
-//        Cart cart1 = new Cart(11);
-//
-//        User user2 = new User("Jamal");
-//        Cart cart2 = new Cart(21);
-//
-//        User user3 = new User("Kelvin");
-//        Cart cart3 = new Cart(31);
-//
-//        // When
-//        myMap.put(user1, cart1);
-//        myMap.put(user2, cart2);
-//        myMap.put(user3, cart3);
-//
-//        // Then
-//        Cart actualCart = myMap.remove(user2);
-//
-//        Assert.assertEquals(cart2, actualCart);
-//        Assert.assertNull(myMap.get(user2));
-//    }
-//
-//    @Test
-//    public void testRemove_CartNotInTheMap(){
-//        // Given
-//        User user1 = new User("Lena");
-//
-//        // When & Then
-//        Assert.assertNull(myMap.remove(user1));
-//    }
+    @Test
+    public void testRemove(){
+        // Given
+        User user1 = new User("Lena");
+        Cart cart1 = new Cart(11);
+
+        User user2 = new User("Jamal");
+        Cart cart2 = new Cart(21);
+
+        User user3 = new User("Kelvin");
+        Cart cart3 = new Cart(31);
+
+        // When
+        myMap.put(user1, cart1);
+        myMap.put(user2, cart2);
+        myMap.put(user3, cart3);
+
+        // Then
+        Cart actualCart = myMap.remove(user2);
+
+        Assert.assertEquals(cart2, actualCart);
+        Assert.assertNull(myMap.get(user2));
+    }
+
+    @Test
+    public void testRemove_CartNotInTheMap(){
+        // Given
+        User user1 = new User("Lena");
+
+        // When & Then
+        Assert.assertNull(myMap.remove(user1));
+    }
 }

src/test/java/org/zipcoder/store/MyHashMapTest.java

     }
 
 //    I commented this out because it takes a long time to run. Uncomment it when implement your put method, uncomment this test
-//    @Test
-//    public void testPutAndGet_WithManyItems(){
-//        // Given
-//        int numberOfEntries = 70000;
-//
-//        for (int i = 0; i < numberOfEntries; i++) {
-//            myMap.put(new User(i), new Cart(i));
-//        }
-//
-//
-//        for (int i = 0; i < numberOfEntries; i++) {
-//            // When
-//            Cart actualCart = myMap.get(new User(i));
-//            Cart expectedCart = new Cart(i);
-//
-//            // Then
-//            Assert.assertEquals(actualCart, expectedCart);
-//        }
-//    }
-
-//    @Test
-//    public void testRemove(){
-//        // Given
-//        User user1 = new User("Lena");
-//        Cart cart1 = new Cart(11);
-//
-//        User user2 = new User("Jamal");
-//        Cart cart2 = new Cart(21);
-//
-//        User user3 = new User("Kelvin");
-//        Cart cart3 = new Cart(31);
-//
-//        // When
-//        myMap.put(user1, cart1);
-//        myMap.put(user2, cart2);
-//        myMap.put(user3, cart3);
-//
-//        // Then
-//        Cart actualCart = myMap.remove(user2);
-//
-//        Assert.assertEquals(cart2, actualCart);
-//        Assert.assertNull(myMap.get(user2));
-//    }
-//
-//    @Test
-//    public void testRemove_CartNotInTheMap(){
-//        // Given
-//        User user1 = new User("Lena");
-//
-//        // When & Then
-//        Assert.assertNull(myMap.remove(user1));
-//    }
+    @Test
+    public void testPutAndGet_WithManyItems(){
+        // Given
+        int numberOfEntries = 70000;
+
+        for (int i = 0; i < numberOfEntries; i++) {
+            myMap.put(new User(i), new Cart(i));
+        }
+
+
+        for (int i = 0; i < numberOfEntries; i++) {
+            // When
+            Cart actualCart = myMap.get(new User(i));
+            Cart expectedCart = new Cart(i);
+
+            // Then
+            Assert.assertEquals(actualCart, expectedCart);
+        }
+    }
+
+    @Test
+    public void testRemove(){
+        // Given
+        User user1 = new User("Lena");
+        Cart cart1 = new Cart(11);
+
+        User user2 = new User("Jamal");
+        Cart cart2 = new Cart(21);
+
+        User user3 = new User("Kelvin");
+        Cart cart3 = new Cart(31);
+
+        // When
+        myMap.put(user1, cart1);
+        myMap.put(user2, cart2);
+        myMap.put(user3, cart3);
+
+        // Then
+        Cart actualCart = myMap.remove(user2);
+
+        Assert.assertEquals(cart2, actualCart);
+        Assert.assertNull(myMap.get(user2));
+    }
+
+    @Test
+    public void testRemove_CartNotInTheMap(){
+        // Given
+        User user1 = new User("Lena");
+
+        // When & Then
+        Assert.assertNull(myMap.remove(user1));
+    }
 }