java代码随机数组合，随机号码产生器

总结：还是掌握方法的运用++++++

package com.c2;

//随机数组合，随机号码产生器
//随机号码
import java.util.Random;

public class rfe {
	private static Random random = new Random();

	public static String getRandom(String[] a, int length, int alength) {
		StringBuffer x = new StringBuffer();
		for (int i = 0; i < length; i++) {
			x.append(String.valueOf(a[random.nextInt(alength)]));
		}
		return x.toString();
	}

	public static void main(String[] args) {
		String a[] = new String[] { "2", "4", "5", "3", "7", "8", "1", "6" };// 输入的是字符串，对于StringBuffer
		System.out.println(getRandom(a, 10, 5));// 这里的10为数组元素个数，5为随机产生的数个数
	}
}
//
522745