import java.util.Random;public class RandomTest{ public static void main(String[] args) { int[] array = new int[41]; Random random = new Random(); for(int i = 0; i < 50; i++) { int number = random.nextInt(41) + 10; array[number - 10]++; } for(int i = 0; i < array.length; i++) { if(0 == array[i]) { continue; } System.out.println(i + 10 +"出现了" + array[i] + "次"); }
}}