SPIRAL MATRIX IN CLOCKWISE DIRECTION

 SPIRAL MATRIX IN CLOCKWISE DIRECTION

I/P:

3 3

1 2 3

4 5 6

7 8 9

O/P:

4 1 2

7 5 3

8 9 6

SOLUTION:

package Arrays;

import java.util.*;

public class SpiralClockwise {

    public static void main(String args[])

    {

        Scanner sc=new Scanner(System.in);

        int iR=sc.nextInt();

        int iC=sc.nextInt();

        int t=iR,t1=iC;

        int arr[][]=new int[iR][iC];

        for(int i=0;i<iR;i++)

        {

            for(int j=0;j<iC;j++)

            {

                arr[i][j]=sc.nextInt();

            }

        }

        int r=0,c=0;int prev=0,curr=0;

        while(r<iR && c<iC)

        {

            if(r+1==iR || c+1==iC)

               break;

            prev=arr[r+1][c];

            for(int i=c;i<iC;i++)

            {

                curr=arr[r][i];

                arr[r][i]=prev;

                prev=curr;

            }

            r++;

            for(int i=r;i<iR;i++)

            {

                curr=arr[i][iC-1];

                arr[i][iC-1]=prev;

                prev=curr;

            }

            iC--;

            for(int i=iC-1;i>=c;i--)

            {

                curr=arr[iR-1][i];

                arr[iR-1][i]=prev;

                prev=curr;

            }

            iR--;

            for(int i=iR-1;i>=r;i--)

            {

                curr=arr[i][c];

                arr[i][c]=prev;

                prev=curr;

            }

            c++;

        }

      

        for(int i=0;i<t;i++)

        {

            for(int j=0;j<t1;j++)

            {

                System.out.print(arr[i][j]+" ");

            }

            System.out.println();

        }

    }

}