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Java Program to Find the Transpose of a Matrix
This article covers a program in Java that find and prints the transpose of a given matrix. The program is created with and without using second matrix.
The transpose of a matrix can be calculated by interchanging the row elements with column elements or column elements with row elements. For example, transpose of following matrix:
1 2 3 4
will be:
1 3 2 4
Find Transpose of a Matrix in Java
The question is, write a Java program to find the transpose of a matrix. Elements of the matrix must be received by user at run-time of the program. The program given below is its answer:
import java.util.Scanner; public class fresherearth { public static void main(String[] args) { int i, j; int[][] matOrig = new int[3][3]; int[][] matTran = new int[3][3]; Scanner scan = new Scanner(System.in); System.out.print("Enter 9 Elements of the Matrix: "); for(i=0; i<3; i++) { for(j=0; j<3; j++) { matOrig[i][j] = scan.nextInt(); } } System.out.println("\n----Original Matrix----"); for(i=0; i<3; i++) { for(j=0; j<3; j++) { System.out.print(matOrig[i][j]+ "\t"); } System.out.print("\n"); } // copying the transpose of matOrig to matTran for(i=0; i<3; i++) { for(j=0; j<3; j++) { matTran[j][i] = matOrig[i][j]; } } System.out.println("\n----Transpose of Matrix----"); for(i=0; i<3; i++) { for(j=0; j<3; j++) { System.out.print(matTran[i][j]+ "\t"); } System.out.print("\n"); } } }
The snapshot given below shows the sample run of above program with user input 1, 2, 3, 4, 5, 6, 7, 8, 9 as nine elements for the matrix:
Transpose of a Matrix in Java without using Second Matrix
This program is similar to previous, but created in a way to transpose the matrix without using second matrix:
import java.util.Scanner; public class fresherearth { public static void main(String[] args) { int i, j, x; int[][] matrix = new int[3][3]; Scanner scan = new Scanner(System.in); System.out.print("Enter 9 Elements of the Matrix: "); for(i=0; i<3; i++) { for(j=0; j<3; j++) matrix[i][j] = scan.nextInt(); } System.out.println("\n----Original Matrix----"); for(i=0; i<3; i++) { for(j=0; j<3; j++) System.out.print(matrix[i][j]+ "\t"); System.out.println(); } // finding the transpose of given matrix for(i=0; i<3; i++) { for(j=0; j<i; j++) { x = matrix[i][j]; matrix[i][j] = matrix[j][i]; matrix[j][i] = x; } } System.out.println("\n----Transpose of Matrix----"); for(i=0; i<3; i++) { for(j=0; j<3; j++) System.out.print(matrix[i][j]+ "\t"); System.out.println(); } } }
Same Program in Other Languages
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