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Java Programming Assignment

Write a class named 2DArrayOperations with the following static methods:

  • getTotal . This method should accept a two-dimensional array as its argument and return the total of all the values in the array. Write overloaded versions of this method that work with int , double , and long arrays. (A)
  • getAverage . This method should accept a two-dimensional array as its argument and return the average of all the values in the array. Write overloaded versions of this method that work with int , double , and long arrays. (B)
  • getRowTotal . This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The method should return the total of the values in the specified row. Write overloaded versions of this method that work with int , double , and long arrays. (C)
  • getColumnTotal . This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a column in the array. The method should return the total of the values in the specified column. Write overloaded versions of this method that work with int , double , and long arrays.(D)
  • getHighestInRow . This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the subscript of a row in the array. The method should return the highest value in the specified row of the array. Write overloaded versions of this method that work with int , double , and long arrays. (E)
  • getLowestInRow . This method should accept a two-dimensional array as its first argument and an integer as its second argument. The second argument should be the sub- script of a row in the array. The method should return the lowest value in the specified row of the array. Write overloaded versions of this method that work with int , double , and long arrays. (F)

Demonstrate the class in a complete program with test data stored in two-dimensional arrays of various data types. (G)

SAMPLE RUN & SCREENSHOT PROVIDED

int[][] iarray- 2, 1, 9}, 1 7, 3, 4 ); double [] [] darray- 98.7, 89.2, 55.1 ), 1 77.6, 99.9, 62.2 ; long[] [] larray- t 100,

Processing the int array. Total : 26 Average : 4 . 333333333333333 Total of row 0: 12 Total of row 1: 14 Total of col 0: 9 To

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Answer #1

SOURCE CODE:

*Please follow the comments to better understand the code.

**Please look at the Screenshot below and use this code to copy-paste.

***The code in the below screenshot is neatly indented for better understanding.

/*package whatever //do not write package name here */

import java.io.*;

class TwoDArrayOperations
{
public static int getTotal(int[][] arr)
{
int sum=0;
for(int i=0;i<arr.length;i++)
{
for(int j=0;j<arr[i].length;j++)
{
sum+=arr[i][j];
}
}
return sum;
}
public static long getTotal(long[][] arr)
{
long sum=0;
for(int i=0;i<arr.length;i++)
{
for(int j=0;j<arr[i].length;j++)
{
sum+=arr[i][j];
}
}
return sum;
}
public static double getTotal(double[][] arr)
{
double sum=0;
for(int i=0;i<arr.length;i++)
{
for(int j=0;j<arr[i].length;j++)
{
sum+=arr[i][j];
}
}
return sum;
}
  
public static double getAverage(int[][] arr)
{
double count=0;
for(int i=0;i<arr.length;i++)
{
count+=arr[i].length;
}
return getTotal(arr)/count;
}
  
public static double getAverage(double[][] arr)
{
double count=0;
for(int i=0;i<arr.length;i++)
{
count+=arr[i].length;
}
return getTotal(arr)/count;
}
  
public static double getAverage(long[][] arr)
{
double count=0;
for(int i=0;i<arr.length;i++)
{
count+=arr[i].length;
}
return getTotal(arr)/count;
}
public static int getRowTotal(int[][] arr,int row)
{
int sum=0;
for(int i=0;i<arr[row].length;i++)
{
sum+=arr[row][i];
}
return sum;
}
public static long getRowTotal(long[][] arr,int row)
{
long sum=0;
for(int i=0;i<arr[row].length;i++)
{
sum+=arr[row][i];
}
return sum;
}
public static double getRowTotal(double[][] arr,int row)
{
double sum=0;
for(int i=0;i<arr[row].length;i++)
{
sum+=arr[row][i];
}
return sum;
}
public static double getHighestInRow(double[][] arr,int row)
{
double highest=0;
for(int i=0;i<arr[row].length;i++)
{
if(arr[row][i]>highest)
highest=arr[row][i];
}
return highest;
}
public static long getHighestInRow(long[][] arr,int row)
{
long highest=0;
for(int i=0;i<arr[row].length;i++)
{
if(arr[row][i]>highest)
highest=arr[row][i];
}
return highest;
}
public static int getHighestInRow(int[][] arr,int row)
{
int highest=0;
for(int i=0;i<arr[row].length;i++)
{
if(arr[row][i]>highest)
highest=arr[row][i];
}
return highest;
}
  
public static double getLowestInRow(double[][] arr,int row)
{
double lowest=99999;
for(int i=0;i<arr[row].length;i++)
{
if(arr[row][i]<lowest)
lowest=arr[row][i];
}
return lowest;
}
public static long getLowestInRow(long[][] arr,int row)
{
long lowest=99999;
for(int i=0;i<arr[row].length;i++)
{
if(arr[row][i]<lowest)
lowest=arr[row][i];
}
return lowest;
}
public static int getLowestInRow(int[][] arr,int row)
{
int lowest=99999;
for(int i=0;i<arr[row].length;i++)
{
if(arr[row][i]<lowest)
lowest=arr[row][i];
}
return lowest;
}
  
public static long getColumnTotal(long[][] arr,int column)
{
long sum=0;
for(int i=0;i<arr.length;i++)
{
sum+=arr[i][column];
}
return sum;
}
public static double getColumnTotal(double[][] arr,int column)
{
double sum=0;
for(int i=0;i<arr.length;i++)
{
sum+=arr[i][column];
}
return sum;
}
public static int getColumnTotal(int[][] arr,int column)
{
int sum=0;
for(int i=0;i<arr.length;i++)
{
sum+=arr[i][column];
}
return sum;
}
  
  
  
   public static void main (String[] args)
   {
   int[][] iarray={ {2,1,9},{7,3,4} };
   double[][] darray={ {98.7,89.2,55.1}, {77.6,99.9,62.2} };
   long[][] larray={ {100,500,200},{300,400,900} };
   TwoDArrayOperations op=new TwoDArrayOperations();
  
   /************************************ INT **********/
System.out.println("Processing the int array.");
   System.out.println("Total: "+TwoDArrayOperations.getTotal(iarray));
   System.out.println("Average: "+TwoDArrayOperations.getAverage(iarray));
   System.out.println("Total of Row 0: "+TwoDArrayOperations.getRowTotal(iarray,0));
   System.out.println("Total of Row 1: "+TwoDArrayOperations.getRowTotal(iarray,1));
   System.out.println("Total of Column 0: "+TwoDArrayOperations.getColumnTotal(iarray,0));
   System.out.println("Total of Column 2: "+TwoDArrayOperations.getColumnTotal(iarray,2));

System.out.println("Highest in Row 0: "+TwoDArrayOperations.getHighestInRow(iarray,0));
   System.out.println("Highest in Row 1: "+TwoDArrayOperations.getHighestInRow(iarray,1));
   System.out.println("Lowest of Row 0: "+TwoDArrayOperations.getLowestInRow(iarray,0));
   System.out.println("Lowest of Row 1: "+TwoDArrayOperations.getLowestInRow(iarray,1));

   /************************************ DOUBLE **********/
   System.out.println("\nProcessing the Double array.");
   System.out.println("Total: "+TwoDArrayOperations.getTotal(darray));
   System.out.println("Average: "+TwoDArrayOperations.getAverage(darray));
   System.out.println("Total of Row 0: "+TwoDArrayOperations.getRowTotal(darray,0));
   System.out.println("Total of Row 1: "+TwoDArrayOperations.getRowTotal(darray,1));
   System.out.println("Total of Column 0: "+TwoDArrayOperations.getColumnTotal(darray,0));
   System.out.println("Total of Column 2: "+TwoDArrayOperations.getColumnTotal(darray,2));

System.out.println("Highest in Row 0: "+TwoDArrayOperations.getHighestInRow(darray,0));
   System.out.println("Highest in Row 1: "+TwoDArrayOperations.getHighestInRow(darray,1));
   System.out.println("Lowest of Row 0: "+TwoDArrayOperations.getLowestInRow(darray,0));
   System.out.println("Lowest of Row 1: "+TwoDArrayOperations.getLowestInRow(darray,1));

/*********************************** LONG ***************/
System.out.println("\nProcessing the Long array.");
   System.out.println("Total: "+TwoDArrayOperations.getTotal(larray));
   System.out.println("Average: "+TwoDArrayOperations.getAverage(larray));
   System.out.println("Total of Row 0: "+TwoDArrayOperations.getRowTotal(larray,0));
   System.out.println("Total of Row 1: "+TwoDArrayOperations.getRowTotal(larray,1));
   System.out.println("Total of Column 0: "+TwoDArrayOperations.getColumnTotal(larray,0));
   System.out.println("Total of Column 2: "+TwoDArrayOperations.getColumnTotal(larray,2));

System.out.println("Highest in Row 0: "+TwoDArrayOperations.getHighestInRow(larray,0));
   System.out.println("Highest in Row 1: "+TwoDArrayOperations.getHighestInRow(larray,1));
   System.out.println("Lowest of Row 0: "+TwoDArrayOperations.getLowestInRow(larray,0));
   System.out.println("Lowest of Row 1: "+TwoDArrayOperations.getLowestInRow(larray,1));
  
  
  
   }
}

========================================================

OUTPUT:

Processing the int array.
Total: 26
Average: 4.333333333333333
Total of Row 0: 12
Total of Row 1: 14
Total of Column 0: 9
Total of Column 2: 13
Highest in Row 0: 9
Highest in Row 1: 7
Lowest of Row 0: 1
Lowest of Row 1: 3

Processing the Double array.
Total: 482.7
Average: 80.45
Total of Row 0: 243.0
Total of Row 1: 239.7
Total of Column 0: 176.3
Total of Column 2: 117.30000000000001
Highest in Row 0: 98.7
Highest in Row 1: 99.9
Lowest of Row 0: 55.1
Lowest of Row 1: 62.2

Processing the Long array.
Total: 2400
Average: 400.0
Total of Row 0: 800
Total of Row 1: 1600
Total of Column 0: 400
Total of Column 2: 1100
Highest in Row 0: 500
Highest in Row 1: 900
Lowest of Row 0: 100
Lowest of Row 1: 300
=============================================================

SCREENSHOTS:

1 Flass TwoDArrayOperations 3public static int getTotal(int arr) int sum-0; for(int i-0;i<arr.length; i++) for(int j-e;jarr[i38 39 46 41 42 43 arr) public static double getAverage(int[ double count-0; for(int i-0;i<arr.length;i++) count+-arri.length;68 69 7e 71 72 73 74- 75 76 public static int getRowTotal(int[[] arr,int row) int sum-0; for(int i-e;icarr[row].length;i+) su97 98 return sum; 100 public static double getHighestInRow double arr,int row) 101 102 103 104 105 106 107 108 109 110 double129 130 131 132 133 134f 135 136 137 138 139 148 141 142 143 144 145 146 147 148 149 158 151 152 153 154 155 156- 157 158 159164 165 166 167- 168 169 170 public static long getColumnTotal(long[1I] arr,int column) long sum-e; for(int i-0;iarr.length;i197 198 public static void main (Stringl] args) int[][] İarray={ {2,1,9),(7,3,4} }; double[)[] darray-198.7,89.2,55.1, 77.6,9Processing the int array. Total: 26 Average: 4.333333333333333 Total of Row 0: 12 Total of Row 1: 14 Total of Column 0: 9 Tot

===========================================================

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