Add ascending array sort utility and tests

src/utils/sortArray.js

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+/**
+ * Author: Mariea Nies
+ * Date: January 13 2026
+ * File: sortArray.js
+ * Description: This function sorts an array of numbers in ascending order
+ */
+'use strict';
+
+function sortArrayAscending(arr) {
+    // Validate input
+    if (!Array.isArray(arr)) {
+        throw new Error('Input must be an array');
+    }
+
+    // Return a NEW sorted array (do not mutate original)
+    return [...arr].sort((a, b) => a - b);
+}
+
+module.exports = { sortArrayAscending };

test/utils/sortArray.spec.js

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+/**
+ * Author: Mariea Nies
+ * Date: January 13 2026
+ * File: sortArray.spec.js
+ * Description: This script tests the sort array function.
+ */
+'use strict'
+
+const { sortArrayAscending } = require('../../src/utils/sortArray');
+
+describe('sortArray.js', () => {
+    it('should sort an array of numbers in ascending order', () => {
+        const result = sortArrayAscending([3, 1, 4, 2]);
+        expect(result).toEqual([1, 2, 3, 4]);
+    });
+
+    it('should handle an already sorted array', () => {
+        const result = sortArrayAscending([1, 2, 3, 4]);
+        expect(result).toEqual([1, 2, 3, 4]);
+    });
+
+    it('should handle negative numbers correctly', () => {
+        const result = sortArrayAscending([0, -5, 10, -2]);
+        expect(result).toEqual([-5, -2, 0, 10]);
+    });
+
+})