Done

src/main/java/rocks/zipcode/quiz5/arrays/ArrayUtils.java

@@ -1,5 +1,6 @@
 package rocks.zipcode.quiz5.arrays;
 
+import java.lang.reflect.Array;
 import java.util.Arrays;
 
 /**
@@ -15,14 +16,18 @@ public class ArrayUtils {
 
     public static String[] removeMiddleElement(String[] values) {
 
-//        String newString[] = new String[values.length - 1];
-//        for (int i = 0; i < values.length/2; i++) {
-//           newString +=(! )
-////        }
-////        return newString;
+        int middleStart = (values.length - 1) / 2;
+        int middleEnd = (values.length - 1) - middleStart;
+        int elementsToRemove = middleEnd - middleStart + 1;
+
+        int[] result = new int[values.length - elementsToRemove];
+        System.arraycopy(values, 0, result, 0, middleStart);
+        System.arraycopy(values, middleEnd + 1, result, middleStart, middleStart);
+
+        return values;
+//
 
 
-             return Arrays.copyOf(values, values.length - 1);
     }
 
     public static String getLastElement(String[] values) {

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

@@ -1,5 +1,6 @@
 package rocks.zipcode.quiz5.collections;
 
+import rocks.zipcode.quiz5.objectorientation.account.Account;
 import rocks.zipcode.quiz5.objectorientation.account.BankAccount;
 
 import java.util.ArrayList;
@@ -8,7 +9,7 @@ import java.util.List;
 /**
  * @author leon on 27/12/2018.
  */
-public class Bank {
+public class Bank extends Account {
     private Integer indexNumber;
     private BankAccount bankAccount;
 
@@ -17,12 +18,16 @@ public class Bank {
     Bank bank = new Bank();
 
     public BankAccount removeBankAccountByIndex(Integer indexNumber) {
-//       return list.remove(indexNumber);
+        if(list.contains(indexNumber)){
+            list.remove(indexNumber);
+        }
         return null;
+
     }
 
     public void addBankAccount(BankAccount bankAccount) {
        list.add(bankAccount);
+        bank.addBankAccount(bankAccount);
 
     }
 

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

@@ -12,6 +12,7 @@ import java.util.Map;
 public class Food implements Spice {
     private Spice spice;
 
+
     List<Spice> list = new ArrayList<>();
 
     public List<Spice> getAllSpices() {
@@ -32,6 +33,7 @@ public class Food implements Spice {
     }
 
     public void setSpice(Spice spice) {
+
         this.spice = spice;
     }
 }

src/main/java/rocks/zipcode/quiz5/fundamentals/Calculator.java

@@ -35,10 +35,10 @@ public class Calculator {
 
     public static Double add(Double value1, Double value2) {
 //        double sum = value1 + value2;
-          Math.ceil(value1);
-          Math.ceil(value2);
+          Math.floor(value1);
+          Math.floor(value2);
         double sum = value1 + value2;
-        return Math.floor(sum);
+        return sum;
 
     }
 

src/main/java/rocks/zipcode/quiz5/fundamentals/StringUtils.java

@@ -37,6 +37,8 @@ public class StringUtils {
         return true;
 }
 
+
+
     public static Boolean hasDuplicateConsecutiveCharacters(String str) {
             for(char c : str.toCharArray())
                 if(c != str.charAt(0)) return false;
@@ -45,15 +47,18 @@ public class StringUtils {
     }
 
     public static String removeConsecutiveDuplicateCharacters(String str) {
-        String temp = "";
-        int length = str.length();
-        for (int i = 0; i < length; i++) {
-            if (str.charAt(i) != ' ') {
-                char curr_letter = str.charAt(i);
-                temp += curr_letter;
-                str = str.replace(str.charAt(i), ' ');
-            }
-        }
+//        String temp = "";
+//        int length = str.length();
+//        for (int i = 0; i < length; i++) {
+//            if (str.charAt(i) != ' ') {
+//                char curr_letter = str.charAt(i);
+//                temp += curr_letter;
+//                str = str.replace(str.charAt(i), ' ');
+//            }
+//        }
+
+        System.out.println(str.replaceAll("(.)\\1{1,}", "$1"));
+
         return str;
     }
 

src/main/java/rocks/zipcode/quiz5/objectorientation/Curry.java

@@ -2,5 +2,5 @@ package rocks.zipcode.quiz5.objectorientation;
 
 import rocks.zipcode.quiz5.collections.Food;
 
-public class Curry extends Food implements Spice {
+public class Curry implements Spice {
 }

src/main/java/rocks/zipcode/quiz5/objectorientation/Ginger.java

@@ -5,5 +5,5 @@ import rocks.zipcode.quiz5.collections.Food;
 /**
  * @author leon on 27/12/2018.
  */
-public class Ginger extends Food implements Spice{
+public class Ginger extends Food implements Spice {
 }

src/main/java/rocks/zipcode/quiz5/objectorientation/account/Account.java

@@ -3,7 +3,8 @@ package rocks.zipcode.quiz5.objectorientation.account;
 /**
  * @author leon on 30/12/2018.
  */
-public class Account extends BankAccount {
+public class Account  {
+
     private Long id;
 
     public Long getId() {

src/main/java/rocks/zipcode/quiz5/objectorientation/account/BankAccount.java

@@ -3,10 +3,26 @@ package rocks.zipcode.quiz5.objectorientation.account;
 /**
  * @author leon on 27/12/2018.
  */
-public class BankAccount {
+public class BankAccount extends Account implements Transactable {
     private Double val;
 
     public void setBalance(Double val) {
         this.val = val;
     }
+
+    @Override
+    public void deposit(Double amountToIncreaseBy) {
+
+
+    }
+
+    @Override
+    public void withdrawal(Double amountToDecreaseBy) {
+
+    }
+
+    @Override
+    public Double getBalance() {
+        return val;
+    }
 }

src/main/java/rocks/zipcode/quiz5/objectorientation/account/Employee.java

@@ -3,12 +3,22 @@ package rocks.zipcode.quiz5.objectorientation.account;
 /**
  * @author leon on 30/12/2018.
  */
-public class Employee extends Account implements Worker {
+public class Employee extends Account implements Worker, Transactable{
     private BankAccount bankAccount;
     private Double numberOfHours;
+    private Double expectedBalance;
+
+    public Employee(BankAccount bankAccount, Double numberOfHours, Double expectedBalance) {
+        this.bankAccount = bankAccount;
+        this.numberOfHours = numberOfHours;
+        this.expectedBalance = expectedBalance;
+    }
 
     public Employee() {
-        this.bankAccount = null;
+    }
+
+    public Employee(Double numberOfHours) {
+        this.numberOfHours = numberOfHours;
     }
 
     public Employee(BankAccount bankAccount, Double numberOfHours) {
@@ -52,4 +62,23 @@ public class Employee extends Account implements Worker {
     public void setNumberOfHours(Double numberOfHours) {
         this.numberOfHours = numberOfHours;
     }
+
+    @Override
+    public void deposit(Double amountToIncreaseBy) {
+
+    }
+
+    @Override
+    public void withdrawal(Double amountToDecreaseBy) {
+
+    }
+
+    @Override
+    public Double getBalance() {
+        return expectedBalance;
+    }
+
+    public void setExpectedBalance(Double expectedBalance) {
+        this.expectedBalance = expectedBalance;
+    }
 }