Java数组 - （平行阵列）

Question

我与Arrays（JAVA）奋力

由于这是第一次，了解我生活的java，我不知道如何启动它。我刚刚学会了如何声明数组等。但是，这对我来说太复杂了。我想我可以得到指导方针，如果我看到这个答案。有人可以帮我吗？

的PROG

Answer 1

阅读java.util.Scanner（API）。你的代码有效。你可以用分数来做你想要的，只需从文件中读取它们并将它们转换为合适的数据类型（整数）以计算平均得分等。

变量是字符串，因此您必须将它们转换为数字做你的计算。

您可以使用arraylistArrayList<TeamMember>作为TeamMembers为您的团队的一个实例变量或基本类型为球队的集合，但我认为最好的是，如果你让班队TeamMember和分数您在实例化你的保龄球课程。您可以在任何地方找到此信息。

import java.util.Scanner; 

//... 
Team usa = new Team(); 
Team mexico = new Team(); 
TeamMember person = new TeamMember(usa); //Harry plays for the US 
... 
Scanner in = new Scanner(System.in); 
int num = in.nextInt(); 

如果你知道，每一个第三输入一个分数，那么你可以检查模3（% 3）知道哪些迭代是3整除。

Answer 2

我已经完成了约40％的请求，我认为这足以让你继续。你应该可以自己完成它。

如果您还有其他问题，请发表评论。 （有一些隐藏的bug，要处理它，你应该先了解示波器，仅供你学习。）

import java.io.*; 
import java.util.*; 

// declaration of the class 
public class Bowling2 { 

// declare arrays below 
String Team, Member; 
int Score, Scorew, Scoreb; 
int[][] teamw = new int[10][3]; 
int[][] teamb = new int[10][3]; 

// declaration of main program 
public static void main(String[] args) throws FileNotFoundException { 

// 1. connect to input file 
Scanner fin = new Scanner(new FileReader("bowling.txt")); 

// 2) initialize array accumulators to zero 
int i, j, Scoreb, Scorew = 0 ; 

// 3) display a descriptive message 
System.out.println(
    "This program reads the lines from the file bowling.txt to determine\n" 
    + "the winner of a bowling match. The winning team, members and scores\n" 
    + "are displayed on the monitor.\n"); 

// 4) test Scanner.eof() condition 
    while (fin.hasNext()) { 
     // 5) attempt to input next line from file 
     Member = fin.next(); 
     Team = fin.next(); 
     Score = fin.nextInt(); 
     // 6) test team color is blue 
     if (Team.toString() == "blue"){ 
      // 7) then store blue member and score 
      teamb[i][0] = Member; 
      teamb[i][1] = Team; 
      teamb[i][2] = Score; 
      // 8) increase blue array accumulator 
      sumArray("blue"); 
      i++; 
     } 
     // 9) else store white member and score 
     else { 
      teamw[j][0] = Member; 
      teamw[j][1] = Team; 
      teamw[j][2] = Score; 
      // 10) increase white array accumulator 
      sumArray("white"); 
      j++; 
     }      
    } 

    // 11) if blue team score is larger 

    // 12) then display blue team as winner 

    // 13) else display white team as winner 

// 14 disconnect from the input file 
fin.close(); 

} 


// implement method `sumArray()` below 
/* 1. initialize accumulator to 0 
    2. loop over initialized array indices 
    3. increase accumulator by indexed array element 
    4. return accumulator 
*/ 
public double sumArray(string color) { 
    if (color == "blue") { 
     for (int k = 0;k < teamb.length(); k++) { 
      //do the calculation here, and return it 
     } 
    }else { 
     for (int h = 0;h < teamw.length(); h++) { 
      //do the calculation here, and return it 
     } 
    } 
} 

// implement method `printArray()` below 
/* 1. display the team name as the winner 
    2. loop over initialized array indices 
    3. display member and score for that array index 
*/ 

}