从txt文件中读取每个其他行并保存到数组中(Reading every other line from a txt file and saving into an array)

 作业：你的小表弟所在的学校正在卖饼干。 如果你堂兄的班级销售的饼干数量超过其他任何课程，那么老师就答应让全班学生去野餐。 当然，你的堂兄自告奋勇跟踪所有销售情况并确定获胜者。 
 
 每个班级都由老师的名字识别。 每个销售单都有教师姓名和售出的盒子数量。 您决定创建两个并行阵列：一个用于保存教师的名称，另一个用于记录销售的盒子数量。 以下是数据示例： 
 
 第一个数字给出了课程的数量，然后一个教师的名字后跟出售的盒子数量15史密斯3考特尼......等等等等 


 我的主要问题（因为我可以将其复制为“将来的”并行数组）是将所有其他行保存到已售出的盒子的数组中，因此数组“boxSold”看起来像 

 [1] 15 
 [2] 3 
 
    package assignment5Package;

    import java.util.Scanner;

    import java.io.*;



    public class assignment5Demo 
    {

        /**
         * @param args
         * @throws IOException 
         */
        public static void main(String[] args) throws IOException 
        {
            // TODO Auto-generated method stub
            //create arrays, variables
            Scanner keyboard = new Scanner(System.in);
            BufferedReader input = new BufferedReader
                (new FileReader ("/Users/lee/Desktop/class/cs 113/Assignment5/cookies.txt"));

            System.out.println("How many sale slips are there");

            int numSaleSlips = keyboard.nextInt();
            int[] soldBox = new int[numSaleSlips];
            //______String[] teacherName = new String[numSaleSlips];
            int soldBoxIndex;
            int teacherNameIndex;
            //String soldBoxString; (line 50)




            //initializing both strings to 0 and "_"
            for (soldBoxIndex = 0; soldBoxIndex < numSaleSlips; soldBoxIndex++)
            {
                soldBox[soldBoxIndex] = 0;
            }

            //**for (teacherNameIndex = 0; teacherNameIndex < numSaleSlips; teacherNameIndex++)
            //**{
            //**    teacherName[teacherNameIndex] = "_";
            //**}

            //reading from the cookies.txt file
            for (soldBoxIndex = 0; soldBoxIndex < numSaleSlips; soldBoxIndex++)
            {
                if (soldBoxIndex % 2 != 0
                {
                    String soldBoxString;


                    soldBoxString = input.readLine(); //reads in value and assigns/re-assigns
                    soldBox[numSaleSlips] = (int) Double.parseDouble(soldBoxString); //type-casted to fit variable type, converts to double, stores in array
                    System.out.println(soldBox[soldBoxIndex]);
                }
                else 
                {
                    System.out.println("Error at " + soldBoxIndex +".");
                }

            }       
}

assignment: A school that your little cousin attends is selling cookies. If your cousin's class sells more cookies than any other class, the teacher has promised to take the whole class on a picnic. Of course, your cousin volunteered you to keep track of all the sales and determine the winner.
 
Each class is identified by the teacher's name. Each sales slip has the teacher's name and the number of boxes sold. You decide to create two parallel arrays: one to hold the teacher's names and one to record the number of boxes sold. Here is a sample of the data:
 
The first number gives the number of classes, and then a teacher's Name is followed by the number of boxes sold 15 Smith 3 Courtney ... so on so forth
 

 My main issue (because i can just duplicate it for the "to-be" parrallel array) is getting every other line to save into an array for the boxes sold so array "boxSold" would look like 

 [1] 15 
 [2] 3
 
    package assignment5Package;

    import java.util.Scanner;

    import java.io.*;



    public class assignment5Demo 
    {

        /**
         * @param args
         * @throws IOException 
         */
        public static void main(String[] args) throws IOException 
        {
            // TODO Auto-generated method stub
            //create arrays, variables
            Scanner keyboard = new Scanner(System.in);
            BufferedReader input = new BufferedReader
                (new FileReader ("/Users/lee/Desktop/class/cs 113/Assignment5/cookies.txt"));

            System.out.println("How many sale slips are there");

            int numSaleSlips = keyboard.nextInt();
            int[] soldBox = new int[numSaleSlips];
            //______String[] teacherName = new String[numSaleSlips];
            int soldBoxIndex;
            int teacherNameIndex;
            //String soldBoxString; (line 50)




            //initializing both strings to 0 and "_"
            for (soldBoxIndex = 0; soldBoxIndex < numSaleSlips; soldBoxIndex++)
            {
                soldBox[soldBoxIndex] = 0;
            }

            //**for (teacherNameIndex = 0; teacherNameIndex < numSaleSlips; teacherNameIndex++)
            //**{
            //**    teacherName[teacherNameIndex] = "_";
            //**}

            //reading from the cookies.txt file
            for (soldBoxIndex = 0; soldBoxIndex < numSaleSlips; soldBoxIndex++)
            {
                if (soldBoxIndex % 2 != 0
                {
                    String soldBoxString;


                    soldBoxString = input.readLine(); //reads in value and assigns/re-assigns
                    soldBox[numSaleSlips] = (int) Double.parseDouble(soldBoxString); //type-casted to fit variable type, converts to double, stores in array
                    System.out.println(soldBox[soldBoxIndex]);
                }
                else 
                {
                    System.out.println("Error at " + soldBoxIndex +".");
                }

            }       
}

原文：https://stackoverflow.com/questions/13600772