From 0482c1d10f7812fb89a0cb3dcfb175d07863e9c4 Mon Sep 17 00:00:00 2001
From: Akshada-26 <130067077+Akshada-26@users.noreply.github.com>
Date: Tue, 24 Oct 2023 11:30:53 +0530
Subject: [PATCH] Update Calculator.java

---
 calculator/Calculator.java | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/calculator/Calculator.java b/calculator/Calculator.java
index 20ea080..dd7b339 100644
--- a/calculator/Calculator.java
+++ b/calculator/Calculator.java
@@ -1,15 +1,18 @@
-class Calculator{
+class Calculator {
 
-    public int addition(int num1,int num2){
-        return num1+num2;
+    public int addition(int num1, int num2) {
+        return num1 + num2;
     }
 
-    public int substraction(int num1,int num2){
-        return num1-num2;
+    public int subtraction(int num1, int num2) {
+        return num1 - num2;
     }
 
-    public int multiplication(int num1,int num2){
-        return num1*num2;
-    
+    public int multiplication(int num1, int num2) {
+        return num1 * num2;
+    }
 
-}
\ No newline at end of file
+    public int changeSign(int num) {
+        return -num;
+    }
+}