键盘录入生成随机数

package Com.czie.iot1913.practice.Common.pra.IntegerTest.Day.number;

import java.util.Arrays;
import java.util.Random;
import java.util.Scanner;

/**
 * @author 1944900433@qq.com
 * @date 2022-03-11 22:56
 */
public class RandomTest05 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int input = sc.nextInt();
        System.out.println("请输入需要生成随机数的数量");
        int[] arr = new int[input];
        Random random = new Random();
        for (int i = 0; i < arr.length; i++) {
            arr[i] = input+2;
        }
        int index = 0;
        while (index<arr.length) {
            int num = random.nextInt(input+1);
            System.out.println("生成随机数："+num);
            if (compare(arr, num)) {
                arr[index++] = num;
            }
        }
        System.out.print("数字如下");
        for (int j = 0; j < arr.length; j++) {
            System.out.print(arr[j]+" ");
        }

    }

    public static boolean compare(int[] arr, int num) {
        Arrays.sort(arr);
        return Arrays.binarySearch(arr, num) < 0;
    }
}