From abef2b0ff401375f351f1e8efc142d10f53ef798 Mon Sep 17 00:00:00 2001
From: Linda Do <lindado_98@hotmail.com>
Date: Tue, 5 Aug 2025 15:06:48 +0200
Subject: [PATCH] completed

---
 .../java/com/booleanuk/core/Exercise.java     | 15 ++++-
 .../com/booleanuk/extension/Extension.java    | 57 +++++++++++++++++++
 2 files changed, 69 insertions(+), 3 deletions(-)

diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 7987028..ab6d395 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -52,11 +52,19 @@ public Exercise(int age) {
         provided to the name and age members
      */
 
-
+    public Exercise(String s, int i) {
+        this.name = s;
+        this.age = i;
+    }
 
     /*
         2. Create a method named add that accepts two integers. The method should return the numbers added together.
      */
+   
+    public int add(int a, int b){
+        int number;
+        return number = a + b;
+    }
 
 
 
@@ -64,7 +72,8 @@ public Exercise(int age) {
         3. Create another method named add that accepts two Strings. The method should return the strings concatenated
         together with a space in between.
      */
-
-
+    public String add (String a, String b) {
+        return a + " " + b;
+    }
 
 }
diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index 62b878f..4bf424a 100644
--- a/src/main/java/com/booleanuk/extension/Extension.java
+++ b/src/main/java/com/booleanuk/extension/Extension.java
@@ -25,6 +25,63 @@ public class Extension extends ExtensionBase {
         E.g.
         multiply(["2", "7", "3"], 3) -> [6, 21, 9]
      */
+    public float add(float a, float b) {
+        return a + b;
+    }
 
+    public double add (double a, double b){
+        return a + b;
+    }
+
+    public float subtract(float a, float b) {
+        return a - b;
+    }
+
+    public String subtract (String a, char b) {
+        String newString = a.replaceAll(String.valueOf(b), "");
+        return newString;
+    }
+
+    public int multiply(int a, int b) {
+        return a * b;
+    }
+
+    public String multiply (String a, int b) {
+        StringBuilder result = new StringBuilder();
+        for (int i = 0; i < b; i++) {
+            result.append(a);
+            if (i < b - 1) {
+                result.append(",");
+            }
+        }
+        return result.toString();
+    }
+
+    public int[] multiply (String[] strings, int b) {
+        int[] newArray = new int[b];
+        int i = 0;
+        for (String a : strings){
+            newArray[i] = (Integer.parseInt(a) * b);
+            i++;
+        }
+        return newArray;
+    }
 
 }
+
+
+
+
+
+    /*
+
+        7. multiply, which accepts an array of Strings that each contain a number, and an int
+        The method should return an array of ints that contain the value of multiplying each String number by the provided int
+        E.g.
+        multiply(["2", "7", "3"], 3) -> [6, 21, 9]*/
+
+
+
+
+
+