Question

How to transpose a matrix (interchanging of rows and columns) in Java

Answer 1

class TransposeAMatrix_Java {
    static final int SIZE = 4;

    static void transpose(int matrix[][], int result[][]) {
        for (int i = 0; i < SIZE; i++)
            for (int j = 0; j < SIZE; j++)
                result[i][j] = matrix[j][i];
    }

    public static void main(String[] args) {
        int matrix[][] = {
            {1, 1, 1, 1},
            {2, 2, 2, 2},
            {3, 3, 3, 3},
            {4, 4, 4, 4}
        };
        int result[][] = new int[SIZE][SIZE];
        transpose(matrix, result);

        for (int i = 0; i < SIZE; i++) {
            for (int j = 0; j < SIZE; j++)
                System.out.print(result[i][j] + " ");
            System.out.println();
        }
    }
}

  
  
  
/*
run:
  
1 2 3 4 
1 2 3 4 
1 2 3 4 
1 2 3 4 
  
*/

 

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