import java.util.Arrays;

import java.util.Random;

import java.util.Scanner;

class J1Lesson3 {

public static void main(String[] args) {

int[] arr = {6, 4, 9, 2, 3, 7, 0};

System.out.println(Arrays.toString(arr));

Arrays.sort(arr);

System.out.println(Arrays.toString(arr));

System.out.println(arr[0] + " - " + arr[arr.length - 1]);

Random random = new Random();

for (int i = 0; i < 20; i++) {

System.out.print(random.nextInt(25) + " ");

}

System.out.println("\nEnter a operation b:");

Scanner read = new Scanner(System.in);

int a = read.nextInt();

String s = read.next();

int b = read.nextInt();

switch (s) {

case "+": System.out.println("= " + (a + b));

break;

case "-": System.out.println("= " + (a - b));

break;

}

}

}