import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;
public class RandomSelect {
public static void main(String[] args) {
String[] names = {"杨","刘","赵","范","张","李","宋","周","郭","任",
"韩","张","张","田","贾","何","袁","姬","邹","蔻","杨","杨"};
List> gl = getGroup(names, 3); //分3组
System.out.println("总人数:"+names.length+"人");
if(gl != null) {
for (List
System.out.println(l);
}
}
}
/**
* 获取随机数
*/
public static int getRandom(int i) {
Random r = new Random();
return r.nextInt(i);
}
/**
* 进行分组 els 需要进行分组的成员 groups 需要分成几组
*/
public static List> getGroup(String[] els, int groups) {
// 判断验证
if (els.length < (groups * 2)) {
System.out.println("分组数过多! 最多只能分" + (els.length / 2) + "组");
return null;
}
if (groups == 1) {
System.out.println("分组数不能为1组");
return null;
}
// 数据源的list
List
// 作为结果返回的list
List> groupsList = new ArrayList
>();
// List