new changes

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

@@ -14,7 +14,12 @@ public class Bank {
 
     public BankAccount removeBankAccountByIndex(Integer indexNumber) {
 
-        return null;
+        BankAccount ba = bank.get(indexNumber);
+
+        bank.remove(ba);
+        bank.remove(indexNumber);
+
+        return ba;
     }
 
     public void addBankAccount(BankAccount bankAccount) {

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

@@ -16,12 +16,24 @@ public class Calculator {
 
     public static Double[] squareRoots(Double... value) {
 
-        return null;
+        Double[] results = new Double[value.length];
+
+        for (int i = 0; i < value.length; i++) {
+            results[i] = Math.sqrt(value[i]);
+        }
+
+        return results;
     }
 
     public static Double[] squares(Double... values) {
 
-        return null;
+        Double[] results = new Double[values.length];
+
+        for (int i = 0; i < values.length; i++) {
+            results[i] = values[i] * values[i];
+        }
+
+        return results;
     }
 
     public static Double add(Double value1, Double value2) {

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

@@ -53,8 +53,10 @@ public class StringUtils {
         for (int i = 0; i < str.length(); i++) {
 
             if (str.charAt(i) == str.charAt(i)) ;
+
+            return true;
         }
-        return true;
+        return false;
     }
 
     public static String removeConsecutiveDuplicateCharacters(String str) {

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

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

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

@@ -3,10 +3,24 @@ package rocks.zipcode.quiz5.objectorientation.account;
 /**
  * @author leon on 27/12/2018.
  */
-public class BankAccount {
+public class BankAccount extends Account implements Transactable{
 
     public void setBalance(Double val) {
 
-        val = 100.00;
+    }
+
+    @Override
+    public void deposit(Double amountToIncreaseBy) {
+
+    }
+
+    @Override
+    public void withdrawal(Double amountToDecreaseBy) {
+
+    }
+
+    @Override
+    public Double getBalance() {
+        return null;
     }
 }

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

@@ -3,18 +3,14 @@ package rocks.zipcode.quiz5.objectorientation.account;
 /**
  * @author leon on 30/12/2018.
  */
-public class Employee extends Account {
+public class Employee implements Transactable, Worker {
 
-    Double HourlyWage = 35.0;
-    Double HoursWorked = 0.0;
-    Double Balance = 0.0;
-    Double BankAccountBalance = 0.0;
 
-    public Employee() {
+    public Employee(BankAccount bankAccount) {
 
     }
 
-    public Employee(BankAccount bankAccount) {
+    public Employee() {
 
     }
 
@@ -26,4 +22,40 @@ public class Employee extends Account {
     public void setBankAccount(BankAccount bankAccount) {
 
     }
+
+    @Override
+    public void deposit(Double amountToIncreaseBy) {
+
+    }
+
+    @Override
+    public void withdrawal(Double amountToDecreaseBy) {
+
+    }
+
+    @Override
+    public Double getBalance() {
+        return null;
+    }
+
+    @Override
+    public void increaseHoursWorked(Double numberOfHours) {
+
+    }
+
+    @Override
+    public Double getHoursWorked() {
+        return null;
+    }
+
+    @Override
+    public Double getHourlyWage() {
+        return null;
+    }
+
+    @Override
+    public Double getMoneyEarned() {
+        return null;
+    }
 }
+

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

@@ -3,7 +3,7 @@ package rocks.zipcode.quiz5.objectorientation.account;
 /**
  * @author leon on 30/12/2018.
  */
-public interface Worker extends Transactable {
+public interface Worker {
     void increaseHoursWorked(Double numberOfHours);
     Double getHoursWorked();
     Double getHourlyWage();

src/test/java/rocks/zipcode/quiz5/objectorientation/account/AccountPolymorphismTest.java

@@ -3,6 +3,8 @@ package rocks.zipcode.quiz5.objectorientation.account;
 import org.junit.Assert;
 import org.junit.Test;
 
+import java.util.List;
+
 /**
  * @author leon on 30/12/2018.
  */