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Java Program to Display Transpose Matrix
  • Difficulty Level : Expert
  • Last Updated : 07 Jan, 2021

Transpose of a matrix is obtained by changing rows to columns and columns to rows. In other words, transpose of A[][] is obtained by changing A[i][j] to A[j][i].

matrix-transpose

Approach:

  • Create a 2-D Array.
  • Insert the values in the array by running two nested loops. The outer ith loop will go till the no.of rows and the inner jth loop will run till the number of columns.
  • For displaying the transpose of the matrix, run the same loop as explained in the above step but print the a[j[i] th element every time we are traversing inside the loop.

Example:

Java

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// Java Program to Display Transpose Matrix
  
import java.util.*;
public class GFG {
    public static void main(String args[])
    {
        // initialize the array of 3*3 order
        int[][] arr = new int[3][3];
  
        System.out.println("enter the elements of matrix");
  
        int k = 1;
  
        // get the elements from user
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                arr[i][j] = k++;
            }
        }
  
        System.out.println("Matrix before Transpose ");
  
        // display original matrix
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                System.out.print(" " + arr[i][j]);
            }
            System.out.println();
        }
  
        System.out.println("Matrix After Transpose ");
  
        // transpose and print matrix
        for (int i = 0; i < 3; i++) {
            for (int j = 0; j < 3; j++) {
                System.out.print(" " + arr[j][i]);
            }
            System.out.println();
        }
    }
}

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Output

enter the elements of matrix
Matrix before Transpose 
 1 2 3
 4 5 6
 7 8 9
Matrix After Transpose 
 1 4 7
 2 5 8
 3 6 9

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