超简洁java实现双色球若干注随机号码生成(实例代码)

 <!-- hutool工具类-->
		<dependency>
			<groupId>cn.hutool</groupId>
			<artifactId>hutool-all</artifactId>
			<version>5.3.6</version>
		</dependency>
    <!-- Google java类库-->
    <dependency>
      <groupId>com.google.guava</groupId>
      <artifactId>guava</artifactId>
      <version>18.0</version>
    </dependency>

import cn.hutool.core.util.RandomUtil;
import com.google.common.collect.Lists;
 
import java.util.List;
 

public class DoubleColorBall {
 
 
  
  public static void main(String[] args) {
    getDoubleColorBallNumber(5);
  }
 
  
  public static void getDoubleColorBallNumber(int num){
    System.out.println("随机生成"+num+"注双色球号码为：");
    String resultNumber="";
    for (int i = 0; i < num; i++) {
      System.out.println("【"+(i+1)+"】 "+resultNumber+getDoubleColorBallNumber());
    }
 
  }
 
  
  public static String getDoubleColorBallNumber(){
    String resultNumber="";
    for (int i = 0; i < 6; i++) {
      String ballNumber= RandomUtil.randomEle(getRedBalls())+"\t";
      resultNumber=resultNumber+ballNumber;
    }
    return resultNumber+RandomUtil.randomEle(getBlueBalls());
  }
 
  
  public static List<String> getRedBalls(){
    return getBalls(33);
  }
 
  
  public static List<String> getBlueBalls(){
    return getBalls(16);
  }
 
  
  public static List<String> getBalls(int num){
    List<String> redBalls= Lists.newArrayList();
    for (int i = 1; i <=num; i++) {
      int length=String.valueOf(num).length();
      String str = String.fORMat("%0"+length+"d",i);
      redBalls.add(str);
    }
    return redBalls;
  }
}