import java.util.Random;

/**
 * Created by 李天龙
 */
public class GetRandomNumber {
    public static int[] getRandomNumber(int max, int amount) {
        //得到1到max之间的amount个不同的随机整数(包括1和max
        int randomNunber[] = new int[amount];
        int index = 0;
        randomNunber[0] = -1;
        Random random = new Random();
        while (index < amount) {
            int number = random.nextInt(max) + 1;
            boolean isInArrays = false;
            for (int m : randomNunber) {//m依次取数组randomNumbeer元素的值
                if (m == number) isInArrays = true;
            }
            if (isInArrays == false) {
                randomNunber[index] = number;
                index++;
            }
        }
        return randomNunber;
    }
}