From f64c8ec7b9756139116073d9e1c7c5a24fcb05f3 Mon Sep 17 00:00:00 2001
From: amir mohammad ghazanfari <amghira1@gmail.com>
Date: Fri, 28 Mar 2025 16:21:19 +0330
Subject: [PATCH] First Part

---
 .../java/com/github/javabaz/Calculator05.java | 54 +++++++++++++++++++
 1 file changed, 54 insertions(+)
 create mode 100644 week01/src/main/java/com/github/javabaz/Calculator05.java

diff --git a/week01/src/main/java/com/github/javabaz/Calculator05.java b/week01/src/main/java/com/github/javabaz/Calculator05.java
new file mode 100644
index 0000000..809964e
--- /dev/null
+++ b/week01/src/main/java/com/github/javabaz/Calculator05.java
@@ -0,0 +1,54 @@
+package com.github.javabaz;
+
+public class Calculator05 {
+
+    public int add(int a, int b) {
+        return a + b;
+    }
+
+    public int subtract(int a, int b) {
+        return a - b;
+    }
+
+    public int multiply(int a, int b) {
+        return a * b;
+    }
+
+    public int divide(int a, int b) {
+        if (b == 0) {
+            throw new ArithmeticException("Cannot divide by zero");
+        }
+        return a / b;
+    }
+
+    public double pow(int a, int b) {
+        //double pow = Math.pow(a, b);
+        //step three 0^0
+        if (a == 0 && b == 0) {
+            throw new ArithmeticException("Undefined");
+        }
+        //step five 1/0
+        if (a == 0 && b < 0) {
+            throw new ArithmeticException("Undefined: divide by zero");
+        }
+
+        double pow = 1;
+
+        // step one
+        for (int i = 1; i <= Math.abs(b); i++) { // ghadre motlagh = Math.abs(b)
+            pow = a * pow;
+        }
+
+        // step two
+        // اگر توان منفی باشه باید پایه رو ببریم زیر خط کسری
+        // اول مثبت میشه بعد میره توانش خساب میشه بعد میره زیر یک
+        // اگر توان منفی بود، معکوس را برگردان
+        if (b < 0) {
+            return 1 / pow;
+        }
+
+        return pow;
+    }
+
+}
+