new changes

src/main/java/rocks/zipcode/quiz5/collections/Bank.java

@@ -3,7 +3,6 @@ package rocks.zipcode.quiz5.collections;
 import rocks.zipcode.quiz5.objectorientation.account.BankAccount;
 
 import java.util.ArrayList;
-import java.util.List;
 
 
 /**
@@ -13,14 +12,33 @@ public class Bank {
 
     public BankAccount removeBankAccountByIndex(Integer indexNumber) {
 
+        ArrayList<Integer> arrayList = new ArrayList<>();
+
+        arrayList.remove(indexNumber);
+
         return null;
     }
 
     public void addBankAccount(BankAccount bankAccount) {
 
+        ArrayList<BankAccount> arrayList = new ArrayList<>();
+
+        arrayList.add(bankAccount);
+
+
     }
 
     public Boolean containsBankAccount(BankAccount bankAccount) {
-        throw new UnsupportedOperationException("Method not yet implemented");
+
+        ArrayList<BankAccount> arrayList = new ArrayList<>();
+
+        if(arrayList.contains(bankAccount)) {
+
+            return true;
+
+        } else {
+
+            return false;
+        }
     }
 }