Question

Anybody Know how to Solve this Problem
Thank you very much
// ***** 1.  This method has been coded as an example
/** Fills the array with random numbers between 50 and 80
*  The instance variable named intArray is the integer array to be
*  filled with values
*/
public void fillValues( )
{
 Random rand = new Random( );
 for ( int row = 0; row < intArray.length; row++ )
 {
     System.out.print( row + "\t" );
     for ( int column = 0; j < intArray[row].length; column++ )
     {
      intArray[row][column] = rand.nextInt( 31 ) + 50;
      animate( row, column, -1 );  // needed for visual feedback
     }
     System.out.println( );
 }
}  // end of fillValues method
// ***** 2.  Student writes this method
/** Prints array to the console, elements are separated by a space
*  The instance variable named intArray is the integer array to be
*  printed
*/
public void printArray( )
{ 
 // Note:  To animate the algorithm, put this method call as the
 // last statement in your inner for loop
 //            animate( row, column, -1 );
 //      where row is the index of the array's current row
 //  and column is the index of the array's current column
 // Write your code here:
} // end of printArray method
// ***** 3.  Student writes this method
/** Sets all the elements in the specified row to the specified value *  The instance variable named intArray is the integer array
*  @param value      the value to assign to the element of the row
*  @param row        the row in which to set the elements to value
*/
public void setValues( int value, int row )
{ 
   // Note:  To animate the algorithm, put this method call as the
   // last statement in your for loop
   //            animate( row, column, -1);
   //      where row is the index of the array's current row
   //      where column is the index of the array's current column
   // Write your code here:
}  // end of setValues method
// ***** 4.  Student writes this method
/** Finds minimum value in the specified column
*  The instance variable named intArray is the integer array
*  @param column     the column to search
*  @return           the minimum value found in the column
*/
public int findMinimum( int column )
{ 
   // Note:  To animate the algorithm, put this method call as the 
   // last statement in your for loop
   //            animate( row, column, minimum );
   //  where row is the index of the array's current row
   //        column is the index of the array's current column
   //        minimum is the variable storing the current minimum
   // Write your code here:
 
  return 0; // replace this line with your return statement
 
}  // end of findMinimumn method
 
// ***** 5.  Student writes this method
/** Finds the number of times value is found in the array
*  The instance variable named intArray is the integer array
*  @param value     the value to count
*  @return          the number of times value was found
*/
public int countFound( int value )
{
   // Note:  To animate the algorithm, put this method call as the
   // last statement in your inner for loop
   //            animate( row, column, num );
   // where row is the index of the array's current row
   //       column is the index of the array's current column
   //       num is the local variable storing the current frequency
   //        count
   // Write your code here:
 
   return 0;  // replace this line with your return statement
 
}
// end of countFound method

Answer 1

package Array;

import java.util.Random;

public class ArrayImp

{

int intArray[][];

ArrayImp()

{

intArray = new int[5][5];

}

// ***** 1. This method has been coded as an example

/** Fills the array with random numbers between 50 and 80

* The instance variable named intArray is the integer array to be

* filled with values

*/

public void fillValues( )

{

Random rand = new Random( );

for ( int row = 0; row < intArray.length; row++ )

for ( int column = 0; column < intArray[row].length; column++ )

intArray[row][column] = rand.nextInt(80 - 50) + 50;

} // end of fillValues method

// ***** 2. Student writes this method

/** Prints array to the console, elements are separated by a space

* The instance variable named intArray is the integer array to be

* printed

*/

public void printArray( )

{

for ( int row = 0; row < intArray.length; row++ )

{

for ( int column = 0; column < intArray[row].length; column++ )

{

System.out.print(intArray[row][column] + " ");

}

System.out.println( );

}

} // end of printArray method

// ***** 3. Student writes this method

/** Sets all the elements in the specified row to the specified value

* The instance variable named intArray is the integer array

* @param value the value to assign to the element of the row

* @param row the row in which to set the elements to value

*/

public void setValues( int value, int row )

{

for ( int column = 0; column < intArray[row].length; column++ )

intArray[row][column] = value;

} // end of setValues method

// ***** 4. Student writes this method

/** Finds minimum value in the specified column

* The instance variable named intArray is the integer array

* @param column the column to search

* @return the minimum value found in the column

*/

public int findMinimum( int column )

{

int min = intArray[0][0];

for(int row = 1; row < intArray.length; row++)

if(intArray[row][column] < min)

min = intArray[row][column];

return min;

} // end of findMinimumn method

// ***** 5. Student writes this method

/** Finds the number of times value is found in the array

* The instance variable named intArray is the integer array

* @param value the value to count

* @return the number of times value was found

*/

public int countFound( int value )

{

int counter = 0;

for ( int row = 0; row < intArray.length; row++ )

for ( int column = 0; column < intArray[row].length; column++ )

if(intArray[row][column] == value)

counter++;

return counter;

}// end of countFound method

public static void main(String []ss)

{

ArrayImp ai = new ArrayImp();

ai.fillValues();

ai.printArray();

System.out.println("\n Sets value 11 in row 3");

ai.setValues(11, 3);

ai.printArray();

System.out.println("\n Minimum value in column 3: " + ai.findMinimum(3));

System.out.println("\n number of times value 11 found: " +

ai.countFound(11));

}

}

Sample Output:

63 56 79 56 67

63 54 52 68 55

71 62 70 72 67

70 60 54 59 74

52 77 73 57 50

Sets value 11 in row 3

63 56 79 56 67

63 54 52 68 55

71 62 70 72 67

11 11 11 11 11

52 77 73 57 50

Minimum value in column 3: 11

number of times value 11 found: 5