Question

Write a program to prompt the user to display the following menu:

Sort             Matrix                   Quit

• If the user selects ‘S’ or ‘s’, then prompt the user to ask how many numbers you wish to read. Then based on that fill out the elements of one dimensional array with integer numbers. Then sort the numbers and print the original and sorted numbers in ascending order side by side.

How many numbers: 6

Original numbers:                     Sorted numbers

34                                                                         2         

55                                                           11

2                                                              34

89                                                            55

78                                                            78

11                                                            89

Do you want to quit? Q

• If the user selects ‘M’ or ‘m, prompt the user to read an elements of two dimensional array of 2 x 2. Then, find the transpose of matric A and then add the transposed matrix to the original matrix and save the results into matrix C. Print the elements of matrices A, A-transposed , and C.

Do you want to quit? Q

If the user enters ‘Q’ or ‘’, your program should terminate the program.

Answer 1

import java.util.Scanner;
public class SortMatrix
{
public static void main(String[] args)
{
   Scanner sc = new Scanner(System.in);//create object of scanner class
       char ch;
      
       while(true)
       {
       System.out.println("********Menu********");
       System.out.println("Sort (Press 'S' or 's')");
       System.out.println("Matrix (Press 'M' or 'm')");
       System.out.println("Quit (Press 'Q')");
       System.out.print("Enter Choice = ");
       ch = sc.next().charAt(0);/// get menu choice from user
       //use switch case
       switch(ch)
       {
      
       case 'S': // user enter choice in both cases small letter or capital letter
       case 's':
      
       int num,temp=0;
       System.out.print("How many numbers you wish to read = ");
       num = sc.nextInt(); //stored size of array
       //create two array
       int arr[] = new int[num];
       int arr2[] = new int[num];
      
       System.out.println("Enter numbers in array = ");
       for(int i=0;i<arr2.length;i++)
       {
       arr2[i] = sc.nextInt();//insert element in array
       }
      
       for(int i=0;i<arr2.length;i++)
       {
       arr[i] = arr2[i]; //copy arr2 in arr for print original array
       }
      
       //sort array
       for(int i=0;i<arr2.length;i++)
       {
       for(int j=i+1;j<arr2.length;j++)
       {
       if(arr2[i]>arr2[j])
       {
       temp = arr2[i];
       arr2[i] = arr2[j];
       arr2[j] = temp;
       }
       }
       }
      
       //print array in proper format
       System.out.println("Original Numbers\tSorted Numbers");
       for(int i=0;i<arr2.length;i++)
       {
       System.out.println("\t"+arr[i]+"\t\t\t"+arr2[i]);
       }
      
       break;
      
       case 'M': // user enter choice in both cases small letter or capital letter
       case 'm':
       //create three 2D array
       int matA[][] = new int[2][2];
       int trasA[][] = new int[2][2];
       int matC[][] = new int[2][2];
      
       System.out.println("Enter number in 2*2 matrix = ");
       for(int i=0;i<matA.length;i++)
       {
       for(int j=0;j<matA.length;j++)
       {
       matA[i][j] = sc.nextInt();//insert element in array first
       }
       }
       // transpose matrix
       for(int i=0;i<matA.length;i++)
       {
       for(int j=0;j<matA.length;j++)
       {
       trasA[i][j] = matA[j][i];
       }
       }
      
       //addition of Original matrix and transpose matrix stored in matc
       for(int i=0;i<matA.length;i++)
       {
       for(int j=0;j<matA.length;j++)
       {
       matC[i][j] = matA[i][j] + trasA[i][j];
       }
       }
      
       //print all three matrix
       System.out.println("Original Matrix\t\tTraspose Matrix\t\tAddition Matrix");
       for(int i=0;i<matA.length;i++)
       {
       for(int j=0;j<matA.length;j++)
       {
       System.out.print(" "+matA[i][j]+"\t");
       }
       System.out.print("\t");
      
       for(int j=0;j<trasA.length;j++)
       {
       System.out.print(" "+trasA[i][j]+"\t");
       }
       System.out.print("\t");
      
       for(int j=0;j<matC.length;j++)
       {
       System.out.print(" "+matC[i][j]+"\t");
       }
       System.out.print("\t");
      
       System.out.println("");
       }
      
       break;
      
       case 'Q':
       //exit in while loop
       System.exit(0);
       break;
      
       default:
System.out.println("Invalis Choice");
break;
       }
       }
   }
}

==================================OUTPUT===============================

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