From 4b9780043bbadef4f438c67566970da67e6bdb2c Mon Sep 17 00:00:00 2001
From: Moueed Ali <moueed.ali@hotmail.com>
Date: Tue, 5 Aug 2025 13:45:43 +0200
Subject: [PATCH 1/3] Exercise completed

---
 src/main/java/com/booleanuk/core/Exercise.java | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/src/main/java/com/booleanuk/core/Exercise.java b/src/main/java/com/booleanuk/core/Exercise.java
index 7987028..91341a6 100644
--- a/src/main/java/com/booleanuk/core/Exercise.java
+++ b/src/main/java/com/booleanuk/core/Exercise.java
@@ -52,19 +52,22 @@ public Exercise(int age) {
         provided to the name and age members
      */
 
-
+    public Exercise(String name, int age) {this.name = name; this.age = age;}
 
     /*
         2. Create a method named add that accepts two integers. The method should return the numbers added together.
      */
 
-
+    public int add(int num1, int num2) {
+        return num1 + num2;
+    }
 
     /*
         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 str1, String str2) {
+        return str1 + " " + str2;
+    }
 }

From c491ddaace609bfa84ceb6b9a916f88258b97772 Mon Sep 17 00:00:00 2001
From: Moueed Ali <moueed.ali@hotmail.com>
Date: Tue, 5 Aug 2025 15:54:23 +0200
Subject: [PATCH 2/3] Extension completed

---
 .../com/booleanuk/extension/Extension.java    | 52 +++++++++++++++++++
 1 file changed, 52 insertions(+)

diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index 62b878f..c4b2645 100644
--- a/src/main/java/com/booleanuk/extension/Extension.java
+++ b/src/main/java/com/booleanuk/extension/Extension.java
@@ -26,5 +26,57 @@ public class Extension extends ExtensionBase {
         multiply(["2", "7", "3"], 3) -> [6, 21, 9]
      */
 
+    // 1.
+    public float add(float a, float b) {
+        return a + b;
+    }
 
+    // 2.
+    public double add(double a, double b) {
+        return a + b;
+    }
+
+    // 3.
+    public float subtract(float a, float b) {
+        return a - b;
+    }
+
+    public String subtract(String a, char b) {
+        String str = "";
+        int length = a.length();
+
+        for (int i = 0; i < length; i++) {
+            if (a.charAt(i) != b) {
+                str += a.charAt(i);
+            }
+        }
+        return str;
+    }
+
+    public int multiply(int a, int b) {
+        return a * b;
+    }
+
+    public String multiply(String a, int b) {
+        String str = "";
+        for (int i = 0; i < b; i++) {
+            str += a;
+            if (i < b - 1) {
+                str += ",";
+            }
+        }
+        return str;
+    }
+
+    public int[] multiply(String[] a, int b) {
+        int length = a.length;
+        int[] newArr = new int[length];
+
+        for (int i = 0; i < a.length; i++) {
+            int num = Integer.parseInt(a[i]);
+            newArr[i] = num*b;
+        }
+        return newArr;
+    }
 }
+

From 736e109af5b6d456657d7770f655503df1617461 Mon Sep 17 00:00:00 2001
From: Moueed Ali <moueed.ali@hotmail.com>
Date: Tue, 5 Aug 2025 15:54:54 +0200
Subject: [PATCH 3/3] Extension completed

---
 src/main/java/com/booleanuk/extension/Extension.java | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/main/java/com/booleanuk/extension/Extension.java b/src/main/java/com/booleanuk/extension/Extension.java
index c4b2645..e0acbf1 100644
--- a/src/main/java/com/booleanuk/extension/Extension.java
+++ b/src/main/java/com/booleanuk/extension/Extension.java
@@ -58,14 +58,14 @@ public int multiply(int a, int b) {
     }
 
     public String multiply(String a, int b) {
-        String str = "";
+        String string = "";
         for (int i = 0; i < b; i++) {
-            str += a;
+            string += a;
             if (i < b - 1) {
-                str += ",";
+                string += ",";
             }
         }
-        return str;
+        return string;
     }
 
     public int[] multiply(String[] a, int b) {