transposeOfMatrix.java

//Question: Take a matrix and print transpose of the matrix.
package twoDArray;
import java.util.Scanner;
public class transposeOfMatrix {
    public static void main(String[] args) {
         Scanner sc=new Scanner(System.in);
    System.out.print("Enter number of rows: ");
    int m=sc.nextInt();
    System.out.print("Enter number of columns: ");
    int n=sc.nextInt();
      int [][] arr=new int[m][n];
    System.out.println("Enter the elements of the matrix: ");
    for (int i = 0; i < m; i++) {
        for (int j = 0; j < n; j++) {
            arr[i][j]=sc.nextInt();
        }
    }
    //Method 1: Making a new matrix ->
// int [][] transpose=new int[n][m];
//  for (int i = 0; i < n; i++) {
//     for (int j = 0; j < m; j++) {
//        transpose[i][j]=arr[j][i];
//     }
// }
//     System.out.println("Transpose of the matrix is: ");
//       for (int i = 0; i < n; i++) {
//         for (int j = 0; j < m; j++) {
//             System.out.print(transpose[i][j]+" ");
//         }
//         System.out.println();
// }
      //Method 2: changing the same matrix -> (Column wise printing)
       System.out.println("Transpose of the matrix is: ");
        for (int j = 0; j < n; j++) {   // Columns
        for (int i = 0; i < m; i++) {   // Rows
            System.out.print(arr[i][j]+" ");
        }
        System.out.println();
}
}
}