From 0b0d423689aab0916cb46d9a593c37c323e37acd Mon Sep 17 00:00:00 2001
From: amin <amin@192.168.11.142>
Date: Wed, 3 Jul 2024 03:20:19 +0100
Subject: [PATCH] test: adding subject and main

---
 .../armstrong-number/ExerciseRunner.java      | 17 ++++++
 .../checkpoints/armstrong-number/README.md    | 52 +++++++++++++++++++
 2 files changed, 69 insertions(+)
 create mode 100644 subjects/java/checkpoints/armstrong-number/ExerciseRunner.java
 create mode 100644 subjects/java/checkpoints/armstrong-number/README.md

diff --git a/subjects/java/checkpoints/armstrong-number/ExerciseRunner.java b/subjects/java/checkpoints/armstrong-number/ExerciseRunner.java
new file mode 100644
index 000000000..028391891
--- /dev/null
+++ b/subjects/java/checkpoints/armstrong-number/ExerciseRunner.java
@@ -0,0 +1,17 @@
+public class ExerciseRunner {
+    public static void main(String[] args) {
+        ArmstrongNumber armstrongNumber = new ArmstrongNumber();
+
+        // Test case 1
+        int number1 = 153;
+        System.out.println("Is " + number1 + " an Armstrong number? " + armstrongNumber.isArmstrong(number1)); // Expected output: true
+
+        // Test case 2
+        int number2 = 123;
+        System.out.println("Is " + number2 + " an Armstrong number? " + armstrongNumber.isArmstrong(number2)); // Expected output: false
+
+        // Test case 3
+        int number3 = 9474;
+        System.out.println("Is " + number3 + " an Armstrong number? " + armstrongNumber.isArmstrong(number3)); // Expected output: true
+    }
+}
\ No newline at end of file
diff --git a/subjects/java/checkpoints/armstrong-number/README.md b/subjects/java/checkpoints/armstrong-number/README.md
new file mode 100644
index 000000000..24cfe8743
--- /dev/null
+++ b/subjects/java/checkpoints/armstrong-number/README.md
@@ -0,0 +1,52 @@
+## Armstrong Number
+
+### Instructions
+
+Write a program to check if a given number is an Armstrong number. An Armstrong number of n digits is an integer such that the sum of its digits raised to the power n is equal to the number itself.
+
+Example: 153 is an Armstrong number bacause `1^3 + 5^3 + 3^3 = 153`
+
+### Expected Class
+
+```java
+public class ArmstrongNumber {
+    public boolean isArmstrong(int number) {
+        // Implementation to check if the given number is an Armstrong number
+    }
+}
+```
+
+### Usage
+
+Here is a possible `ExerciseRunner.java` to test your class:
+
+```java
+public class ExerciseRunner {
+    public static void main(String[] args) {
+        ArmstrongNumber armstrongNumber = new ArmstrongNumber();
+
+        // Test case 1
+        int number1 = 153;
+        System.out.println("Is " + number1 + " an Armstrong number? " + armstrongNumber.isArmstrong(number1)); // Expected output: true
+
+        // Test case 2
+        int number2 = 123;
+        System.out.println("Is " + number2 + " an Armstrong number? " + armstrongNumber.isArmstrong(number2)); // Expected output: false
+
+        // Test case 3
+        int number3 = 9474;
+        System.out.println("Is " + number3 + " an Armstrong number? " + armstrongNumber.isArmstrong(number3)); // Expected output: true
+    }
+}
+```
+
+### Expected Output
+
+```shell
+$ javac *.java -d build
+$ java -cp build ExerciseRunner
+Is 153 an Armstrong number? true
+Is 123 an Armstrong number? false
+Is 9474 an Armstrong number? true
+$
+```