package com.shiyanlou.course; import java.util.ArrayList; import java.util.Collections; import java.util.List; import java.util.Random; import java.util.Scanner; public class ShowConstant { public static void main(String[] args){ ShowConstant showCon = new ShowConstant(); Scanner scan = new Scanner(System.in); System.out.print("get lottery input 1," + "toDegrees or toRadians input 2!"); String choose = scan.nextLine(); switch(choose){ case "1": System.out.print("input lottery's number:"); String groupNum = scan.nextLine(); showCon.generateLottery(groupNum); break; case "2": System.out.print("input toRadians(1)" + " or toDegrees(2):"); String toChoose = scan.nextLine(); switch(toChoose){ case "1": System.out.print("input degrees:"); double degrees = scan.nextDouble(); System.out.println("result is " + Math.toRadians(degrees)); break; case "2": System.out.print("input radians"); double radians = scan.nextDouble(); System.out.println("result is " + Math.toDegrees(radians)); } break; } } //get the first five numbers public List getHeadNumber(){ List list = new ArrayList(); String lotteryNumber = ""; for(int i = 1; i < 36; i++){ if(i < 10){ list.add("0" + i + " "); }else{ list.add("" + i + " "); } } List lotteryList = new ArrayList(); int roundIndex = 0; for(int j = 0; j < 5; j++){ int amount = list.size(); Random r = new Random(); roundIndex = r.nextInt(amount); lotteryNumber = list.get(roundIndex); lotteryList.add(lotteryNumber); list.remove(roundIndex); } Collections.sort(lotteryList); return lotteryList; } //get the last two numbers public List getRearNumber(){ List list = new ArrayList(); String lotteryNumber = ""; for(int i = 1; i < 13; i++){ if(i < 10){ list.add("0" + i + " "); }else{ list.add("" + i + " "); } } List lotteryList = new ArrayList(); int roundIndex = 0; for(int j = 0; j < 2; j++){ int amount = list.size(); Random r = new Random(); roundIndex = r.nextInt(amount); lotteryNumber = list.get(roundIndex); lotteryList.add(lotteryNumber); list.remove(roundIndex); } Collections.sort(lotteryList); return lotteryList; } //get the complete numbers public void generateLottery(String groupNum){ int groupNumber = 0; groupNumber = Integer.parseInt(groupNum); StringBuilder sbuilder = new StringBuilder(); for(int i = 0; i < groupNumber; i++){ List startList = getHeadNumber(); List endList = getRearNumber(); for(int m = 0; m < startList.size(); m++){ sbuilder.append(startList.get(m)); } sbuilder.append(" "); for(int m = 0; m < endList.size(); m++){ sbuilder.append(endList.get(m)); } sbuilder.append("\n"); } System.out.println(sbuilder.toString()); } }

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