From d82d5912bd8538551bea5665b3d6db3a12bffe38 Mon Sep 17 00:00:00 2001
From: "github-classroom[bot]"
 <66690702+github-classroom[bot]@users.noreply.github.com>
Date: Fri, 21 Mar 2025 19:07:40 +0000
Subject: [PATCH 1/3] Setting up GitHub Classroom Feedback


From 7e6ee9d6d878588fdb38ca54156e7e31c5636f5b Mon Sep 17 00:00:00 2001
From: "github-classroom[bot]"
 <66690702+github-classroom[bot]@users.noreply.github.com>
Date: Fri, 21 Mar 2025 19:07:43 +0000
Subject: [PATCH 2/3] add online IDE url

---
 README.md | 1 +
 1 file changed, 1 insertion(+)

diff --git a/README.md b/README.md
index 8f88a51..157d6e7 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,4 @@
+[![Open in Codespaces](https://classroom.github.com/assets/launch-codespace-2972f46106e565e64193e422d61a12cf1da4916b45550586e14ef0a7c637dd04.svg)](https://classroom.github.com/open-in-codespaces?assignment_repo_id=18806281)
 # Lab 15 - Selection Sort + Array Methods
 
 **Implement the Selection Sort Algorithm Using Array Methods**

From d4bf675e8fa55032ace9e695e9d74ec8d19cc8c7 Mon Sep 17 00:00:00 2001
From: sageyosick <sageyosick@gmail.com>
Date: Fri, 21 Mar 2025 20:30:31 +0000
Subject: [PATCH 3/3] selection sort array methods

---
 ArrayMethods.java | 48 ++++++++++++++++++++++++++++++++++++++---------
 Main.java         | 27 +++++++++++++++++++++++++-
 2 files changed, 65 insertions(+), 10 deletions(-)

diff --git a/ArrayMethods.java b/ArrayMethods.java
index 1c0c553..61ad55c 100644
--- a/ArrayMethods.java
+++ b/ArrayMethods.java
@@ -33,31 +33,61 @@ public class ArrayMethods
   /**DESCRIPTION: */
   public static String arrayString(int[] a)
   {
-    return ""; //STUB to keep compiler happy
+    String result = "{ " + a[0];
+    //return ""; //STUB to keep compiler happy
+      for(int i = 1; i < a.length; i++) {
+         result += ", " + a[i];
+      }
+
+    result += " }";
+
+    return result;
   }
   
   /**DESCRIPTION: */
   public static void swap(int[] array, int a, int b)
   {
-  
+    int temp = array[a];
+    array[a] = array[b];
+    array[b] = temp;
   }
-	
-	/**DESCRIPTION: */
+  
+  /**DESCRIPTION: */
   public static int indexOfMin(int[] array, int startIndex)
   {
-    return 0; //STUB to keep compiler happy
+    int minValue = array[startIndex];
+    int minIndex = startIndex;
+
+    for(int i = startIndex+1; i < array.length; i++) {
+      if(minValue > array[i]) {
+        minValue = array[i];
+        minIndex = i;
+      }
+
+    }
+    return minIndex;
+
   }
 
-	/**DESCRIPTION: */
+  /**DESCRIPTION: */
   public static void reverse(int[] array)
   {
-
+    for(int i = 0; i < array.length/2; i++) {
+      ArrayMethods.swap(array, i, array.length-1-i);
+    }
+   
   }
 
-	/**DESCRIPTION: */
+  /**DESCRIPTION: */
   public static void selectionSort(int[] array)
   {
+    for(int i = 0; i < array.length-1; i++) {
+      int indexMinValue = ArrayMethods.indexOfMin(array, i);
+      ArrayMethods.swap(array, i, indexMinValue);
+
+    }
+
 
   }
 
-}
\ No newline at end of file
+}
diff --git a/Main.java b/Main.java
index 3990323..c550fdd 100644
--- a/Main.java
+++ b/Main.java
@@ -9,6 +9,31 @@ public class Main
 {
   public static void main(String[] args)
   {
+    int[] values = {12, 16, 26, 42, 53, 77, 84};
+
+    System.out.println("Test :" + ArrayMethods.arrayString(values));
+
+    ArrayMethods.swap(values, 0, 6);
+    System.out.println("Test after swap (12and84):" + ArrayMethods.arrayString(values));
+
+    int[] numbers = {42, 16, 84, 12, 77, 26, 53};
+    int minIndex1 = ArrayMethods.indexOfMin(numbers, 0);
+    int minIndex2 = ArrayMethods.indexOfMin(numbers, 4);
+
+    System.out.println("TEST: min indices should be 3 and 5, we got: " + minIndex1 + " and " + minIndex2);
+
+    System.out.println("Test before reversal:" + ArrayMethods.arrayString(numbers));
+
+    ArrayMethods.reverse(numbers);
+
+    System.out.println("Test after reversal:" + ArrayMethods.arrayString(numbers));
+
+    System.out.println("Test before sorting:" + ArrayMethods.arrayString(numbers));
+
+    ArrayMethods.selectionSort(numbers);
+
+    System.out.println("Test after sorting:" + ArrayMethods.arrayString(numbers));
 
   }
-}
\ No newline at end of file
+}
+