Thursday, 19 January 2017

Matrix...

Write a program to declare a matrix A [][] of order (MXN) where ‘M’ is the number of rows and ‘N’ is the number of columns such that both M and N must be greater than 2 and less than 20. Allow the user to input integers into this matrix. Perform the following tasks on the matrix:

a)   Display the input matrix
b)   Find the maximum and minimum value in the matrix and display them along with their position.
c)    Sort the elements of the matrix in ascending order using any standard sorting technique and rearrange them in the matrix.
d)   Output the rearranged matrix.

INPUT:         M=3            N=4

Entered values: 8, 7, 9, 3, -2, 0, 4, 5, 1, 3, 6, -4
Original matrix:
8  7  9  3
-2  0  4  5
1  3  6  -4


Largest Number: 9  Row: 0                   Column: 2   
Smallest Number: -4       Row=2                  Column=3
Rearranged matrix:
-4  -2  0  1
3  3  4  5
6  7  8  9
Input:                    M=3            N=22

Output:        Size out of range


Solution:-

import java.util.*;
class matrix
{
     int arr[][];
    int r,c,max,min,maxi,maxj,mini,minj,i,j,m,n;
    void perform()
    {
           Scanner sc = new Scanner(System.in);
           System.out.print("Enter the number of rows(M):");
           r=sc.nextInt();
        System.out.print("Enter the number of columns(N):");
        c=sc.nextInt();
        if(r < 2 || c < 2 || r > 20 || c > 20)
        System.out.println("Size out of Range");
        System.exit(0);
           arr=new int[r][c];
           for(i=0;i<r;i++)
    {
           for(j=0;j<c;j++)
           {
                System.out.print("Enter Value:");
                arr[i][j]=sc.nextInt();
            }
        }
        max=arr[0][0];
        min=arr[0][0];
        maxi=0;
        mini=0;
        maxj=0;
        minj=0;
        for(i=0;i < r;i++)
        {
             for(j=0;j<c;j++)
             {
                 if(arr[i][j]>max)
                 {
                     max=arr[i][j];
                     maxi=i;
                     maxj=j;
                    }
                    else if(arr[i][j]<min)
                    {
                         mini=i;
                         minj=j;
                         min=arr[i][j];
                    }
             }
        }
        System.out.println("Original Matrix");
        for(i=0;i< r;i++)
        {
            for(j=0;j< c;j++)
            {
                System.out.print(arr[i][j]+" ");
            }
            System.out.println();
        }
           System.out.print("Maximum Value= "+max);
           System.out.print("\tRow= "+maxi);
           System.out.println("\tColumn= "+maxj);
           System.out.print("Minimum Value= "+min);
           System.out.print("\tRow= "+mini);
           System.out.println("\tColumn= "+minj);
           for(m=0;m< r;m++)
           {
                for(n=0;n< c;n++)
                {
                     for(i=0;i< r;i++)
                     {
                           for(j=0;j< c;j++)
                           {
                                if(arr[m][n]< arr[i][j])
                                {
                                     min=arr[m][n];
                            arr[m][n]=arr[i][j];
                            arr[i][j]=min;
                                }
                           }
                     }
                }
           }
           System.out.println("Rearranged Matrix");
           for(i=0;i< r;i++)
           {
                for(j=0;j< c;j++)
                {
                     System.out.print(arr[i][j]+" ");
                }
                System.out.println();
           }
    }
     public static void main(String args[]) throws Exception
     {
           matrix ob=new matrix();
           ob.perform();
     }
}





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