Java 實現彩票程序

import?java.util.ArrayList;

import?java.util.Collections;

import?java.util.List;

import?java.util.Random;

public?class?Main?{

public?static?void?main(String[]?args)?{

//紅球?33?選6

List<Integer>?redBall?=?new?ArrayList<Integer>();

for(int?i=0;i<33;i++){

redBall.add(i+1);

}

System.out.println("開獎紅球："?+?select(redBall,?6));

//籃球16選1

List<Integer>?blueBall?=?new?ArrayList<Integer>();?

for(int?i=0;i<16;i++){

blueBall.add(i+1);

}

System.out.println("開獎藍球："?+?select(blueBall,?1));

}

public?static?List<Integer>?select(List<Integer>?list,int?count){

List<Integer>?selectedList?=?new?ArrayList<Integer>();

Random?random?=?new?Random();

for(int?i=0;i<count;i++){

int?index?=?random.nextInt(list.size());

Integer?number?=?list.get(index);

selectedList.add(number);

list.remove(index);

}

Collections.sort(selectedList);?

return?selectedList;

}

}