我目前正在开发一个java项目，并且我应该创建一个生成1000到2000之间的数字的程序，然后让你有机会输入玩家的数量，接受所有的名字和猜测在两个不同的数组中，然后创建两个方法，一个用于查找与实际数字最接近的猜测，另一个用于报告或找到胜利者与其猜测匹配并将其打印出来。我的第二种方法有问题，我现在在逻辑部分画一个空白，这是我的代码和输出：
public static void reportWinner (int answer, int winner, int [] array, String [] array1)
{
ArrayList tempList = new ArrayList();
ArrayList tempList1 = new ArrayList();
int counter = 0;
int temp = 0;
for(int index = 0; index < array.length; index++)
{
temp = answer - array[index];
temp = Math.abs(temp);
if(temp == winner)
{
counter++;
tempList.add(array1[index]);
tempList1.add(array[index]);
}
}
for(int index = 0; index < tempList.size(); index++)
{
if(tempList.size() == 1);
{
System.out.println("The winner is " + tempList.get(0) + ", with a guess of " + tempList1.get(0) + " which is "
+ winner + " away from the actual number of jelly beans.");
if(tempList.size() > 1)
{
System.out.println("The winners are: ");
System.out.println(tempList.get(index) + ", with a guess of " + tempList1.get(index) + " which is "
+ winner + " away from the actual number of jelly beans.");
}
}
if(tempList.size() == 1 && winner == 0)
{
System.out.println("The winner is " + tempList.get(0) + ", with a guess of " + tempList1.get(0) + " which is "
+ "the exact number of jelly beans in the jar.");
if(tempList.size() > 1)
{
System.out.println("The winners are: ");
System.out.println(tempList.get(index) + ", with a guess of " + tempList1.get(index) + " which is "
+ "the exact number of jelly beans in the jar.");
}
}
}
}
当有多个获胜者时，这是它产生的输出。
There were 1532 jelly beans in the jar.
The winner is Stan, with a guess of 1200 which is 332 away from the actual number of jelly beans.
The winners are:
Stan, with a guess of 1200 which is 332 away from the actual number of jelly beans.
The winner is Stan, with a guess of 1200 which is 332 away from the actual number of jelly beans.
The winners are:
greg, with a guess of 1200 which is 332 away from the actual number of jelly beans.
The winner is Stan, with a guess of 1200 which is 332 away from the actual number of jelly beans.
The winners are:
Jim, with a guess of 1200 which is 332 away from the actual number of jelly beans.
这应该是什么样子
There were 1500 jelly beans in the jar.
The winners are:
Mike with a guess of 1475, which is 25 away from the actual number of jelly beans.
Tony with a guess of 1525, which is 25 away from the actual number of jelly beans.
我遇到方法部分有问题，我知道这么多，但如果你需要看到其余的代码让我知道任何帮助将不胜感激，谢谢。 （我想我需要一种方法来取消第一次打印，如果计数器通过一个，但我不知道如何去做）
答案 0 :(得分：2)
试试这个。我在代码中做了很多更改，因为我不理解它。以下更改：
这是代码
import java.util.ArrayList;
import java.util.List;
public class GuesNumber {
public static void main(String[] args) {
// The number we want to guess
final int theNumber = 1500;
// A random set of players and their numbers
List<Player> players = new ArrayList<>();
for (int i = 0; i < 100; i++) {
players.add(new Player("Player " + i, (int) (Math.round((Math.random() * 1000)) + 1000)));
}
// Call of your function (with less arguments)
reportWinner(theNumber, players);
}
public static void reportWinner(int theNumber, List<Player> players) {
// Here we store the minimal diff between THE number
// and the number of the potential winner
Integer minDiff = null;
// Here we store the winners
ArrayList<Player> winners = new ArrayList<>();
// Find the winners
for (Player player : players) {
int diff = Math.abs(player.number - theNumber);
// We have a potential winner the player is the first
// we check or his number is less or equal then
// the minimal diff
if (minDiff == null || minDiff <= diff) {
// We have to clear all potential winners,
// if the number of the player is smaller then
// the minimal diff
if (minDiff != null && minDiff > diff) {
winners.clear();
}
// Add a potential winner
winners.add(player);
minDiff = diff;
};
}
// Let's do the output
System.out.println("There were " + theNumber + " jelly beans in the jar\n");
System.out.println("The winner " + (winners.size() == 1 ? "is" : "are") + ":\n");
for (Player player : winners) {
System.out.print(player.name + " with a gues of " + player.number + ", wich is " + minDiff + " away from the actual number of jelly beans. ");
}
System.out.println("");
}
public static class Player {
String name;
int number;
public Player(String name, int number) {
this.name = name;
this.number = number;
}
}
}
答案 1 :(得分：0)
这就是你需要的。注意：建议使用有意义的变量名而不是array或tempList来使代码更具可读性。
public static void reportWinner (int answer, int winner, int [] array, String [] array1)
{
ArrayList tempList = new ArrayList();
ArrayList tempList1 = new ArrayList();
int temp = 0;
for(int index = 0; index < array.length; index++)
{
temp = answer - array[index];
temp = Math.abs(temp);
if(temp == winner)
{
tempList.add(array1[index]);
tempList1.add(array[index]);
}
}
if(tempList.size() > 1) {
System.out.println("The winners are: ");
} else if(tempList.size() == 1) {
System.out.println("The winner is: ");
}
for(int index = 0; index < tempList.size(); index++)
{
String suffix = "";
if(winner == 0) {
suffix = "the exact number of jelly beans in the jar."
} else {
suffix = winner + " away from the actual number of jelly beans."
}
System.out.println(tempList.get(index) + ", with a guess of " + tempList1.get(index) + " which is " + suffix);
}
}