我正在试图弄清楚如何为这个梦幻足球计划添加新功能。我希望能够让用户为他们的团队命名，而不仅仅是“团队1”，“团队2”等。我正在尝试创建一个字符串数组和
经过大量的搜索和阅读后，我无法弄清楚如何做到这一点。我目前要求用户提供for循环中的团队名称，我要求每周得分，这似乎不是正确的位置。任何帮助都会受到赞赏。
import java.util.Scanner;
public class fantasyFootball
{
private int numberOfTeams; // Same as teamAverage.length.
private int numberOfWeeks; // Same as weekAverage.length.
private int[][] score; //numberOfTeams rows and numberOfWeeks columns.
private int[] teamAverage;
private int[] scoreAverage;
public static void main(String[] args)
{
fantasyFootball book = new fantasyFootball( );
book.display();
}
public fantasyFootball(int[][] a)
{
if (a.length == 0 || a[0].length == 0)
{
System.out.println("Empty score records. Aborting.");
System.exit(0);
}
numberOfTeams = a.length;
numberOfWeeks = a[0].length;
fillScore(a);
fillTeamAverage( );
fillScoreAverage( );
}
public fantasyFootball(fantasyFootball book)
{
numberOfTeams = book.numberOfTeams;
numberOfWeeks = book.numberOfWeeks;
fillScore(book.score);
fillTeamAverage( );
fillScoreAverage( );
}
public fantasyFootball( )
{
Scanner keyboard = new Scanner(System.in);
System.out.println("Enter number of teams:");
numberOfTeams = keyboard.nextInt( );
System.out.println("Enter number of weeks:");
numberOfWeeks = keyboard.nextInt( );
score = new int[numberOfTeams][numberOfWeeks];
for (int teamName = 1;
teamName <= numberOfTeams; teamName++)
for (int weekNumber = 1;
weekNumber <= numberOfWeeks; weekNumber++)
{
System.out.println("Enter team name ");
teamName.add(keyboard.nextLine());
System.out.println("Enter score for team "
+ teamName);
System.out.println("on week number " + weekNumber);
score[teamName - 1][weekNumber - 1] =
keyboard.nextInt( );
}
fillTeamAverage( );
fillScoreAverage( );
}
private void fillScore(int[][] a)
{
score = new int[numberOfTeams][numberOfWeeks];
for (int teamName = 1;
teamName <= numberOfTeams; teamName++)
{
for (int weekNumber = 1;
weekNumber <= numberOfWeeks; weekNumber++)
score[teamName][weekNumber] =
a[teamName][weekNumber];
}
}
/**
Fills the array teamAverage using the data from the array score.
*/
private void fillTeamAverage( )
{
teamAverage = new int[numberOfTeams];
for (int teamName = 1;
teamName <= numberOfTeams; teamName++)
{//Process one teamName:
int sum = 0;
for (int weekNumber = 1;
weekNumber <= numberOfWeeks; weekNumber++)
sum = sum + score[teamName - 1][weekNumber - 1];
//sum contains the sum of the week scores for team number teamName.
teamAverage[teamName - 1] = sum/numberOfWeeks;
//Average for team teamNumber is teamAverage[teamNumber - 1]
}
}
/**
Fills the array scoreAverage using the data from the array score.
*/
private void fillScoreAverage( )
{
scoreAverage = new int[numberOfWeeks];
for (int weekNumber = 1; weekNumber <= numberOfWeeks; weekNumber++)
{//Process one week (for all teams):
int sum = 0;
for (int teamName = 1;
teamName <= numberOfTeams; teamName++)
sum = sum + score[teamName - 1][weekNumber - 1];
//sum contains the sum of all team scores on week number weekNumber.
scoreAverage[weekNumber - 1] = sum/numberOfTeams;
//Average for week weekNumber is the value of weekAverage[weekNumber - 1]
}
}
public void display( )
{
for (int teamName = 1;
teamName <= numberOfTeams; teamName++)
{//Display for one teamNumber:
System.out.print("Team " + teamName + " Weeks: ");
for (int weekNumber = 1;
weekNumber <= numberOfWeeks; weekNumber++)
System.out.print(score[teamName - 1][weekNumber - 1] + " ");
System.out.println(" Ave = " + teamAverage[teamName - 1] );
}
System.out.println("Week averages: ");
for (int weekNumber = 1; weekNumber <= numberOfWeeks; weekNumber++)
System.out.print("Week " + weekNumber
+ " Ave = " + scoreAverage[weekNumber - 1] + " ");
System.out.println( );
}
private void teamName()
{
Scanner keyboard = new Scanner(System.in);
String[] teamName = new String[3];
}
}
答案 0 :(得分：1)
以下是使用ArrayList存储团队名称的解决方案：
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
public class fantasyFootball {
private List<String> teamNames = new ArrayList<String>();
private int numberOfTeams; // Same as teamAverage.length.
private int numberOfWeeks; // Same as weekAverage.length.
private int[][] score; // numberOfTeams rows and numberOfWeeks columns.
private int[] teamAverage;
private int[] scoreAverage;
public static void main(String[] args) {
fantasyFootball book = new fantasyFootball();
book.display();
}
public fantasyFootball(int[][] a) {
if (a.length == 0 || a[0].length == 0) {
System.out.println("Empty score records. Aborting.");
System.exit(0);
}
numberOfTeams = a.length;
numberOfWeeks = a[0].length;
fillScore(a);
fillTeamAverage();
fillScoreAverage();
}
public fantasyFootball(fantasyFootball book) {
numberOfTeams = book.numberOfTeams;
numberOfWeeks = book.numberOfWeeks;
fillScore(book.score);
fillTeamAverage();
fillScoreAverage();
}
public fantasyFootball() {
Scanner keyboard = new Scanner(System.in);
System.out.println("Enter number of teams:");
numberOfTeams = keyboard.nextInt();
System.out.println("Enter number of weeks:");
numberOfWeeks = keyboard.nextInt();
score = new int[numberOfTeams][numberOfWeeks];
for (int teamName = 1; teamName <= numberOfTeams; teamName++){
System.out.println("Enter team " + teamName + " name ");
String name = keyboard.next();
teamNames.add(name);
for (int weekNumber = 1; weekNumber <= numberOfWeeks; weekNumber++) {
System.out.println("Enter score for team " + teamName + " on week number " + weekNumber);
score[teamName - 1][weekNumber - 1] = keyboard.nextInt();
}
}
fillTeamAverage();
fillScoreAverage();
}
private void fillScore(int[][] a) {
score = new int[numberOfTeams][numberOfWeeks];
for (int teamName = 1; teamName <= numberOfTeams; teamName++) {
for (int weekNumber = 1; weekNumber <= numberOfWeeks; weekNumber++)
score[teamName][weekNumber] = a[teamName][weekNumber];
}
}
/**
* Fills the array teamAverage using the data from the array score.
*/
private void fillTeamAverage() {
teamAverage = new int[numberOfTeams];
for (int teamName = 1; teamName <= numberOfTeams; teamName++) {// Process
// one
// teamName:
int sum = 0;
for (int weekNumber = 1; weekNumber <= numberOfWeeks; weekNumber++)
sum = sum + score[teamName - 1][weekNumber - 1];
// sum contains the sum of the week scores for team number teamName.
teamAverage[teamName - 1] = sum / numberOfWeeks;
// Average for team teamNumber is teamAverage[teamNumber - 1]
}
}
/**
* Fills the array scoreAverage using the data from the array score.
*/
private void fillScoreAverage() {
scoreAverage = new int[numberOfWeeks];
for (int weekNumber = 1; weekNumber <= numberOfWeeks; weekNumber++) {// Process
// one
// week
// (for
// all
// teams):
int sum = 0;
for (int teamName = 1; teamName <= numberOfTeams; teamName++)
sum = sum + score[teamName - 1][weekNumber - 1];
// sum contains the sum of all team scores on week number
// weekNumber.
scoreAverage[weekNumber - 1] = sum / numberOfTeams;
// Average for week weekNumber is the value of
// weekAverage[weekNumber - 1]
}
}
public void display() {
for (int teamName = 1; teamName <= numberOfTeams; teamName++)
{// Display for one teamNumber:
System.out.print("Team " + teamNames.get(teamName-1) + " Weeks: ");
for (int weekNumber = 1; weekNumber <= numberOfWeeks; weekNumber++)
System.out.print(score[teamName - 1][weekNumber - 1] + " ");
System.out.println(" Ave = " + teamAverage[teamName - 1]);
}
System.out.println("Week averages: ");
for (int weekNumber = 1; weekNumber <= numberOfWeeks; weekNumber++)
System.out.print("Week " + weekNumber + " Ave = "
+ scoreAverage[weekNumber - 1] + " ");
System.out.println();
}
private void teamName() {
Scanner keyboard = new Scanner(System.in);
String[] teamName = new String[3];
}
}
输出：
Enter number of teams:
3
Enter number of weeks:
2
Enter team 1 name
MyTeam1
Enter score for team 1 on week number 1
1
Enter score for team 1 on week number 2
2
Enter team 2 name
MyTeam2
Enter score for team 2 on week number 1
3
Enter score for team 2 on week number 2
4
Enter team 3 name
MyTeam3
Enter score for team 3 on week number 1
4
Enter score for team 3 on week number 2
6
Team MyTeam1 Weeks: 1 2 Ave = 1
Team MyTeam2 Weeks: 3 4 Ave = 3
Team MyTeam3 Weeks: 4 6 Ave = 5
Week averages:
Week 1 Ave = 2 Week 2 Ave = 4
答案 1 :(得分：0)
我会在获得分数之前设置团队名称，
System.out.println("Enter number of teams:");
int numberOfTeams = keyboard.nextInt( );
String[] teamNames = new String[numberOfTeams];
for (int i = 0; i < numberOfTeams; i++) {
System.out.printf("Enter team name for team %d:%n", 1+i);
teamNames[i] = keyboard.next();
}
答案 2 :(得分：0)
System.out.println("Enter team name ");
teamName.add(keyboard.nextLine());
System.out.println("Enter score for team "
+ teamName);
更改为：
System.out.println("Enter team name ");
String name = (keyboard.nextLine());
System.out.println("Enter score for team "
+ name);
另外，如果你想存储它：
private String[] names = new String[numberOfTeams];
//Then in the above code:
names[teamName] = name;
答案 3 :(得分：0)
这是一个使用简单的String对象数组的解决方案。将private String[] names;添加到实例字段列表中，使FantasyFootball构造函数看起来像这样：
public FantasyFootball()
{
int numTeams;
int numWeeks;
Scanner keyboard = new Scanner(System.in);
System.out.print("Enter number of teams: ");
numTeams = keyboard.nextInt();
for (int i = 0; i < numTeams; i++)
{
System.out.print("Enter the name of team " + (i+1) + ": ");
names[i] = keyboard.nextLine();
}
System.out.print("Enter number of weeks: ");
numWeeks = keyboard.nextInt();
names = new String[numTeams];
scores = new int[numTeams][numWeeks];
for (int i = 0; i < numTeams; i++)
{
for (int j = 0; j < numWeeks; j++)
{
System.out.print("Enter the score for " + names[i] + " for week " + (j+1) + ": ");
scores[i][j] = keyboard.nextInt();
}
}
fillTeamAverage();
fillScoreAverage();
}
一些编程提示：
首先，我建议创建一个Team对象，其中包含每周得分的数组，团队平均值的int和得分平均值的int。然后在你的fantasyFootball类中，只需操作一个Team对象数组，而不是每个不同字段的数组。它使将来更容易使用。
类名通常按惯例以大写字母开头。几乎每个人都遵循惯例，所以我强烈建议你也这样做。
使用one-liner-so-I-not-need-braces语法虽然较短，但是它使代码更难读取并且更难调试代码，所以我建议你使用所有的括号，以及在新行上而不是在语句行的末尾放置开括号。同样，它将使事情变得更加容易。
最后，在Java中，您可以使用+运算符将变量连接到字符串上，如您所知。但我在你的代码中注意到你打破了一些打印到两个调用。您可能已经知道这一点，但是您可以在同一个字符串/ print语句中使用多个+运算符，就像使用+和数字一样。
希望这有帮助！