Let’s learn java program to find transpose of a matrix.
Java program to find transpose of a matrix
Java program to transpose matrix is one of the common interview question in java. Transpose means converting rows of matrix into columns and columns of matrix into row.
For example:
3x3 matrix ----------------- a11 a12 a13 a21 a22 a23 a31 a32 a33 transposed 3x3 matrix ----------------- a11 a21 a31 a12 a22 a32 a13 a23 a33
Let’s see java program to find transpose of a matrix.
import java.util.Scanner;
public class MatrixTransposeInJava
{
public static void main(String[] args)
{
int[][] arrGiven = {{2,4,6},{8,1,3},{5,7,9}};
// another matrix to store transpose of matrix
int[][] arrTranspose = new int[3][3];
// transpose matrix code
for(int a = 0; a < 3; a++)
{
for(int b = 0; b < 3; b++)
{
arrTranspose[a][b] = arrGiven[b][a];
}
}
System.out.println("Before matrix transpose: ");
for(int a = 0; a < 3; a++)
{
for(int b = 0; b < 3; b++)
{
System.out.print(arrGiven[a][b] + " ");
}
System.out.println();
}
System.out.println("After matrix transpose: ");
for(int a = 0; a < 3; a++)
{
for(int b = 0; b < 3; b++)
{
System.out.print(arrTranspose[a][b] + " ");
}
System.out.println();
}
}
}
Output:
Before matrix transpose:
2 4 6
8 1 3
5 7 9
After matrix transpose:
2 8 5
4 1 7
6 3 9
Also read – abstraction in java