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import java.util.*;

public class interchange_rows {

public static void main(String[] args) {

Scanner ob=new Scanner(System.in);

System.out.println("Enter no of rows and columns: ");

int r=ob.nextInt(),c=ob.nextInt(),a[][]=new int[r+1][c+1],temp;

System.out.println("Enter elements: ");

for(int i=0;i<r;i++)

{

for(int j=0;j<c;j++)

{

a[i][j]=ob.nextInt();

}

temp=a[i][0];

a[i][0]=a[i][c-1];

a[i][c-1]=temp;

}

System.out.println("After interchanging: ");

for(int i=0;i<r;i++)

{

for(int j=0;j<c;j++)

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

System.out.println();

}

ob.close();

}