Question

How to pass 2D array (matrix) to function in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        int[][] matrix = {{31, 22, 33}, 
                          {42, 85, 987}};
 
        print_array(matrix);
    }
    public static void print_array(int[][] matrix) {
        int rows = matrix.length;
        int cols = matrix[0].length;
        
        for (int i = 0; i < rows; i++) {
            for (int j = 0; j < cols; j++)
                 System.out.format("%4d", matrix[i][j]);
            System.out.println();
        }
    }
}
 
/*
                
run:
   
  31  22  33
  42  85 987
       
*/

 

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