题解 | #最高分与最低分之差#

import java.util.Scanner;
import java.util.Arrays;
public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = scan.nextInt();
        int[] arr = new int[n];
        for(int i = 0; i < n; i++) {
            arr[i] = scan.nextInt();
        }
        Arrays.sort(arr);
        System.out.println(arr[arr.length - 1] - arr[0]);
    }
}