Java编程题-生成5个不重复的随机数

生成5个不重复的随机数[1-5]

import java.util.Random;

public class RandomTest02 {

	public static void main(String[] args) {

		Random r = new Random();

		int[] a = new int[5];

		int index = 0;

		while (index < 5) {
			int temp = r.nextInt(6);

			if (temp != 0 && !contains(a, temp)) {
				a[index++] = temp;
			}
		}

		for (int i = 0; i < a.length; i++) {
			System.out.println(a[i]);
		}

	}

	// 判断temp元素在a数组中是否包含
	private static boolean contains(int[] a, int temp) {
		for (int i = 0; i < a.length; i++) {
			if (a[i] == temp) {
				return true;
			}
		}
		return false;
	}
}