using System;
class MainClass {
public static void Main (string[] args) {
// Define an array of 10 elements
int[] arr = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
Console.WriteLine("Original array:");
Console.WriteLine(String.Join(", ", arr));
// Swap the first 5 elements with the second 5 elements
for (int i = 0; i < 5; i++) {
int temp = arr[i];
arr[i] = arr[i + 5];
arr[i + 5] = temp;
}
Console.WriteLine("Swapped array:");
Console.WriteLine(String.Join(", ", arr));
}
}