Java program to print the transpose of a matrix

August 20, 2021

Transpose of a Matrix

In this article, we will discuss the java program to print the transpose of a matrix. Converting rows of matrix into columns and columns of a matrix into rows is called transpose of a matrix. In other words, transpose of matrix[][] is obtained by changing matrix[i][j] to matrix[j][i].

Transpose of matrix in java

Transpose of a Matrix in Java

A transpose of a matrix is the matrix flipped over its diagonal i.e. the row and column indices of the matrix are switched. An example of this is given as follows −

Matrix = 
1 2 3
4 5 6
7 8 9

Transpose of Matrix  = 
1 4 7
2 5 8
3 6 9

Code in java

import java.util.*;
class Solution
{
    public static void main(String[] args)
    {
         Scanner sc=new Scanner(System.in);
         System.out.println("Enter the number of rows of matrix");
         int row=sc.nextInt();
         System.out.println("Enter the number of columns of a matrix");
         int col=sc.nextInt();
         int matrix[][]=new int[row][col];
         System.out.println("Enter the elements of a matrix");  
         for(int i=0;i<row;i++)
           for(int j=0;j<col;j++)
             matrix[i][j]=sc.nextInt();
  
         int result[][]=new int[col][row];
         for(int i=0;i<col;i++)
             for(int j=0;j<row;j++)
               result[i][j]=matrix[j][i];
         
          System.out.println("Transpose of a matrix ");
          for(int i=0;i<col;i++)
          {
                for(int j=0;j<row;j++)
                   System.out.print(result[i][j]+" ");
                 System.out.println();
           }
    }
}

Output :

Enter the number of rows of matrix
3
Enter the number of columns of a matrix
3
Enter the elements of a matrix
1 2 3
4 5 6
7 8 9
Transpose of a matrix
1 4 7
2 5 8
3 6 9