21 22 Maximum and minimum from array

// Q21 Maximum element of array
import java.util.*;
public class Main
{
    public static void main(String[] args) {
        int[] arr = {1,2,3,4,5};
        int mx = -122323;
        for(int i=0 ; i<5 ; i++){
            mx = Math.max(mx, arr[i]);
        }
        System.out.println("Maximum element of array is "+mx);
    }
}
// Maximum element of array is 5

// Q22 Second maximum and second minimum in array