In the following question, we are supposed to enter a 2D array or rather Matrix. The 2D-array will be dynamic array of size (R*C). After entering into the array, we’ll have to print the transpose matrix and along with the original matrix.

**The basic idea to be kept in mind is:**

Transpose of a Matrix is defined as a Matrix where the original Row elements becomes the column elements and Column elements becomes the Row Elements.

**The standard algorithm will be:**

- Enter the size of the 2D-array.
- Create the matrix of the input size.
- Using a loop construct, enter integer inputs in the matrix.
- Declare another matrix that will store the Transpose of the original matrix. The size will be same as original matrix.
- Using loop construct, swap the elements of original into transpose matrix such that the row becomes column index and vice versa.
- After the loop terminates, print the result accordingly.

### Source Code:

```
/* Program to enter a 2D matrix and print the transpose of the matrix */
import java.util.*;
class Transpose {
public static void main() {
Scanner inp = new Scanner(System.in);
System.out.print("\n Enter Row Size: "); //Entering Dimensions
int r = inp.nextInt();
System.out.print("\n Enter Column Size: ");
int c = inp.nextInt();
int i, j;
int arr[][] = new int[r][c]; //Creating N-size Array
int t[][] = new int[r][c];
for (i = 0; i < r; i++) //Entering N numbers in array
{
for (j = 0; j < c; j++) {
System.out.print("\n Enter: ");
arr[i][j] = inp.nextInt();
}
}
for (i = 0; i < r; i++) //Transposing
{
for (j = 0; j < c; j++) {
t[j][i] = arr[i][j];
}
}
System.out.println("\n Original Matrix: ");
for (i = 0; i < r; i++) {
for (j = 0; j < c; j++) {
System.out.print(arr[i][j] + " "); //Printing Original matrix
}
System.out.println();
}
System.out.println("\n Transpose Matrix: ");
for (i = 0; i < r; i++) {
for (j = 0; j < c; j++) {
System.out.print(t[i][j] + " "); //Printing Transpose matrix by reversing Original
}
System.out.println();
}
}
}
```

### Output:

```
Enter Row Size: 3
Enter Column Size: 3
Enter: 1
Enter: 2
Enter: 3
Enter: 4
Enter: 5
Enter: 6
Enter: 7
Enter: 8
Enter: 9
Original Matrix:
1 2 3
4 5 6
7 8 9
Transpose Matrix:
1 4 7
2 5 8
3 6 9
```