Question

Write program in Java

import java.util.Scanner;

public class Lab7Program {
public static void main(String[] args) {
//1. Create a double array that can hold 10 values
  
//2. Invoke the outputArray method, the double array is the actual argument.

//4. Initialize all array elements using random floating point numbers between 1.0 and 5.0, inclusive
  
//5. Invoke the outputArray method to display the contents of the array
  
//6. Set last element of the array with the value 5.5, use length to access last index.
  
//7. Invoke the outputArray method to display the contents of the array
  
//8. Allow user to input elements 2 through 6 through keyboard
  
//9. Invoke the outputArray method to display the contents of the array
  
//10. Compute the sum of all elements in the array
  
//11. Display the sum you found in step #9
  
//12. Find the index of the smallest element in the array.
  
//13. Display the index of the smallest element and the value of the
// smallest element.
  
//15. Invoke bubble sort method, the array is the actual argument.

//16. Invoke the outputArray method, the array is the actual argument.

//18. Invoke linearSearch method, search for value 5.5. Output a statement informing if the
// search value was found or not.

}
  
// 3. Implement outputArray method that will display the contents of the array
// on a single line, elements separated by spaces.
// There should be an empty line in the output after the array elements.
  
// 14. Implement bubble sort method here. The double type array is the formal parameter.
  
// 17. Implement linearSearch method here. The double type array and search value are the formal parameters.
}

Answer 1

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//Import for random number.

import java.util.Random;

//Import for input.

import java.util.Scanner;

//Define the class.

public class Lab7Program

{  

     //Define the main method().

     public static void main(String[] args)

     {

          //Create the scanner object.

         Scanner scobj = new Scanner(System.in);

        

         //Define the variables.

          double array[]= new double[10],value=0;

          double sum=0, min=0;int index=0;

         

          //Use loop to fill array elements.

          for(int i=0;i<array.length;i++)

          {

              //Generate the random number.

              Random r = new Random();

             

              //Store random number in array.

              array[i] = 1.0 + (5.0 - 1.0)

                             * r.nextDouble();

          }

         

          //Call the outputArray() method to print

          //the array elements.

          outputArray(array);

          System.out.println();

          System.out.println("After Replacing the last"

                                 + " element with 5.5");

         

          //Replace the last elements with 5.5

          array[array.length-1]=5.5;

         

          //Call the outputArray() method to print

          //the array elements.

          outputArray(array);

          System.out.println();

          System.out.println("Enter 5 array element:");

          for(int i=1;i<6;i++)

         {

              array[i]=scobj.nextDouble();

         }

         

          //Call the outputArray() method to print

          //the array elements.

          outputArray(array);

         

          //Compute the sum of array elements.

          for(int i=0;i<array.length;i++)

          {

              sum=sum+array[i];

          }

          System.out.println();

          //Print the sum.

          System.out.println("The sum of array "

                             + "elements is "+sum);

         

          //store first element in the variable min.

          min =array[0];

         

          //Iterate through the array.

          for(int i=0;i<array.length;i++)

          {   

              //Compare the array elements.

              if(array[i]<min)

              {

                   //store the minimum element

                   //and its index.

                   min =array[i];

                   index=i;

              }

          }

         

          System.out.println();

          //Print the minimum element of array with

          //its index.

         

System.out.printf("The index of smallest ");

System.out.printf("elements is "+ index+ " the smallest ");

System.out.printf("value in the array is %.2f\n ",min);

         

          //Call the method to sort the array.

          bubbleSort(array);

          System.out.println();

         

          //Call the outputArray() method to print

          //the array elements.

          outputArray(array);

          System.out.println();

         

          //Prompt the user to enter the value to be

          //found.

          System.out.println("Enter value to be found:");

          value=scobj.nextDouble();

         

          //Call the method to find the value.

          linearSearch( array, value);

     }

    

     //Define the method to print the array elemnts.

     public static void outputArray( double array[])

     {

         System.out.println("Array elements are as"

                             + " follows:");

          //Iterate through the array.

          for(int i=0;i<array.length;i++)

         {

              //Print the array elements.

           System.out.printf("%.2f ",array[i]);

         }

          System.out.println();

     }

    

     //Define the method to sort the array.

     public static void bubbleSort( double array[])

     {  

          //Define the variables.

          int i,j;

          double t;

         

          //Use loop to iterate through the array.

          for (i = 0; i < array.length; i++)     

          {      

                 for (j = 0; j < array.length-i-1; j++)

                 {

                 //Compare the array elements.

                     if (array[j] > array[j+1])

                     {

                     //Swap the elements.

                     t=array[j];

                     array[j]=array[j+1];

                     array[j+1]=t;

                     }

                 }

          }         

     }

    

     //Define the method to search the element.

     public static void linearSearch(

                         double array[], double value)

     {

          //Define the variables.

          boolean flag=false;

          int i;

         

          //Iterate through the array.

          for (i = 0; i < array.length; i++)     

          {  

              //Compare the array elements with the

              //value to be found.

              if(array[i]==value)

                   //Set flag true.

                   flag=true;

          }

          //Display the message as per the flag.

          System.out.println(flag?"Value found":

                                  "Value not found");

          }

     }