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Hi! we will learn how to transpose a matrix in java.
Main logic behind matrix transpose is:
//transpose matrix
int transpose[][] = new int[columns][rows];
for (int i = 0; i < rows; i++) {
for (int j = 0; j < columns; j++)
transpose[j][i] = matrix[i][j];
}
Example/ Full Program/SourceCode to do Matrix Transpose in java >
package matrix;
import java.util.Scanner;
/** Copyright (c), AnkitMittal JavaMadeSoEasy.com - Matrix Transpose in java */
public class TransposeMatrix {
public static void main(String...args) {
Scanner scanner = new Scanner(System.in);
System.out.println("Enter number of rows in matrix : ");
int rows = scanner.nextInt();
System.out.print("Enter number of columns in matrix : ");
int columns = scanner.nextInt();
int matrix[][] = new int[rows][columns];
System.out.println("Enter the elements in matrix :");
for (int i = 0; i < rows; i++) {
for (int j = 0; j < columns; j++) {
matrix[i][j] = scanner.nextInt();
}
}
//transpose matrix
int transpose[][] = new int[columns][rows];
for (int i = 0; i < rows; i++) {
for (int j = 0; j < columns; j++)
transpose[j][i] = matrix[i][j];
}
System.out.println("\nEntered Matrix is : ");
for (int i = 0; i < rows; i++) {
for (int j = 0; j < columns; j++) {
System.out.print(matrix[i][j] + " ");
}
System.out.println();
}
System.out.println("\nTranspose of entered matrix is : ");
for (int i = 0; i < columns; i++) {
for (int j = 0; j < rows; j++)
System.out.print(transpose[i][j] + " ");
System.out.println();
}
}
}
/*OUTPUT
Enter number of rows in matrix :
3
Enter number of columns in matrix : 2
Enter the elements in matrix :
1
2
3
4
5
6
Entered Matrix is :
1 2
3 4
5 6
Transpose of entered matrix is :
1 3 5
2 4 6
*/
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So we learned program to do Matrix Transpose in java.
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Labels:
Core Java
Matrix programs