Question

到目前为止，我所做的一切都是正确的，但是一旦我得到我最后的打印声明，我会得到一串字符作为我的答案，当我应该得到整个阵列的所有工资的总和。请帮忙！我的输出是第1行的人员总金额为118943 所有人的总薪水是[[I @ 1540e19d

public class SummerStats
{
   private int [][] salaries;

   public SummerStats(int numPeople, int numYears)
   {
      //initialize array
      salaries = new int[numPeople][numYears];

      java.util.Random r = new java.util.Random();
      //fill array
      for(int i=0; i<numPeople; i++)
      {
          for(int j=0; j<numYears; j++)
          {
            salaries[i][j] = r.nextInt(100000);
          } 
      }
   }

   public int [][] getSalaries()
   {
      return salaries;
   }

   public int getMostMoneyOverYears()
   {
      int [] tmp = new int[salaries[0].length];
      int k = 0;

      for(int i=0; i<salaries.length; i++)
      {
           for(int j=0; j<salaries[i].length; j++)
           {
            tmp[k] += salaries[i][j]; 
           }
           k++;
      }    

      return getMax(tmp);
   }

   private int getMax(int [] arry)
   {
      int sal1=0;
      int idx=-1;
      for(int i=0; i<arry.length; i++)
      {
          if(sal1 <arry[i])
          {
            sal1= arry[i];
            idx = i;
          }
      }

      return idx;
   } 

   public int getHighestSalary()
   {
      //find the highest salary in a single year and return of the index
      int [][] tmp = new int [salaries.length][2]; //stores salary (row) and the index (col) from the     salaries [][]
      int max = 0;
      int idxtmp = -1;

      int p=0;

      for(int i=0; i<salaries.length; i++)
      {
         for(int j=0; j<salaries[i].length; j++)
         {
           if(max < salaries[i][j])
           { 
             max = salaries[i][j];         
             idxtmp = j;
           }               

         }
         //add max value and its corresponding index to tmp
         tmp[p][0] = max;
         tmp[p][1] = idxtmp;

         p++;
   } 

  //now that we have the max for each person (row) compare salaries in each row         
  //reset values
  max = 0;
  idxtmp = -1;
  for(int i=0; i<tmp.length; i++)
  {
     if(max < tmp[i][0])
     {
        max = tmp[i][0];  //this is the max salary
        idxtmp = tmp[i][1]; //this is the index of the salary from the salaries[][]
     }
  }   

  return idxtmp;
  }

   public int getTotalSalary (int person)
   {

    int totalSalary = 0;
    for(int i=0; i<salaries[person].length; i++)
    {
     totalSalary+=salaries[person][i];
    }



  return totalSalary;
  }
  //get total of all salaries
   public int getAllSalaries()
   {
     int sum = 0;
     for(int i=0; i<salaries.length; i++)
     {
       for(int j=0; j < salaries[i].length; j++)
       {
        sum += salaries[i][j];
       }
     }   

     return sum;
   }
}



import java.util.Scanner;
public class TestSummerStats
{
   public static void main(String [] args)
   {
      SummerStats ssObj = new SummerStats(2, 3);
      int [][] sal = ssObj.getSalaries();

      for(int i=0; i<2; i++)
      {
         for(int j=0; j<3; j++)
         {
            System.out.println("Salary at " + i + " " + j + " is $" + sal[i][j]);
         }
      }

      //keep my output looking clean
      System.out.println();

  System.out.println("Index of the big baller: " + ssObj.getMostMoneyOverYears());

  //keep my output looking clean
  System.out.println();

  System.out.println("Index of the year with the highest salary: " + ssObj.getHighestSalary());

  //keep my output looking clean
  System.out.println();

  //promt the user to enter the person that you want the salary for
  Scanner scan = new Scanner(System.in);
  System.out.println("Please enter the person you want to know the salary for.");
  int person = scan.nextInt();

  //keep my code clean 
  System.out.println();

  //print out the amount of money made by the specified person 
  System.out.println("Total money made by person at row " + person + " is " + ssObj.getTotalSalary(person));

  //sum the entire salaries
  System.out.println("The total salaries of all individuals is " + ssObj.getSalaries());



   }
}

Answer 1

方法getSalaries()因此被声明和定义：

public int [][] getSalaries() {
  return salaries;
}

它被定义为返回一个二维数组，你看到的结果是从这样的野兽返回的默认toString()。要获得一个实际数字，你的方法应该返回一个数字，可能是你的选择，或者是你的选择，并且在方法体内，你应该迭代你的二维数组来总结所有的工资。

Answer 2

从最后一行的文字判断，您应该在最后一行中将方法调用从ssObj.getSalaries()更改为ssObj.getAllSalaries()。

您获得的“字符串”是将数组转换为String时所发生的情况（通过与另一个字符串连接或通过调用数组上的toString()显式隐式）。 / p>

Answer 3

您正在调用返回数组的函数getSalaries（）。你应该调用ssObj.getAllSalaries（）。

您获得的字符串可能是对工资数组对象的引用。

为了我多年的总和，我一直在为我的输出获得一系列的性格？

3 个答案: