From 1c29e00406d30a035f6d30e02020d59a6ff7f57e Mon Sep 17 00:00:00 2001
From: Jonathan van Oudheusden <jonathanvanoudheusden@gmail.com>
Date: Tue, 5 Aug 2025 15:06:01 +0200
Subject: [PATCH] implement exercises

---
 .../java/com/booleanuk/core/Exercise.java     | 22 ++++++++++++++-----
 1 file changed, 16 insertions(+), 6 deletions(-)

diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 4d002b4..f4210df 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -1,5 +1,7 @@
 package com.booleanuk.core;
 
+import java.util.Arrays;
+
 public class Exercise {
     // The block of code below is a method definition. So far, you've been using methods created by other people
     // such as .length() and .charAt(n)
@@ -23,6 +25,8 @@ public int[] one() {
         // Using an index, change the number 17 in the numbers array to 68
         // WRITE YOUR CODE BETWEEN THIS LINE...
 
+        numbers[2] = 68;
+
 
 
         // ... AND THIS LINE
@@ -37,7 +41,7 @@ public String two() {
         // teacher contained in the teachers array
         // WRITE YOUR CODE BETWEEN THIS LINE...
 
-        String teacher = "";
+        String teacher = teachers[3];
 
         // ... AND THIS LINE
 
@@ -47,14 +51,14 @@ public String two() {
     public String[] three() {
         // 3. Create a string array named cars that contains three names of car manufacturers: Audi, BMW and Dodge
         // WRITE YOUR CODE BETWEEN THIS LINE...
-
+        String[] cars = {"Audi", "BMW", "Dodge"};
 
 
         // ... AND THIS LINE
 
         // Then change the code below to remove the dummyArray completely and return the cars array you created above instead.
-        String[] dummyArray = {};
-        return dummyArray;
+//        String[] dummyArray = {};
+        return cars;
     }
 
     public int four() {
@@ -65,6 +69,10 @@ public int four() {
         // WRITE YOUR CODE BETWEEN THIS LINE...
 
         int result = 0;
+        for (int i =0; i <numbers.length; i++) {
+            result += numbers[i];
+        }
+
 
         // ... AND THIS LINE
 
@@ -75,12 +83,14 @@ public float[] five() {
         // 5. Create an array called floats that contains 3 floating point numbers: 9.62, 23.17 and 3.14
         // WRITE YOUR CODE BETWEEN THIS LINE...
 
+        float[] floats = {9.62f, 23.17f, 3.14f};
+
 
 
         // ... AND THIS LINE
 
         // Then change the code below to remove the dummyArray completely and return the floats array you created instead
-        float[] dummyArray = {};
-        return dummyArray;
+//        float[] dummyArray = {};
+        return floats;
     }
 }