[Solved] why the last row and column of array is zero?

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the problem was really with the line max = Math.Max(min, min); , i have replaced it and got the correct output of fuzzy MAX_MIN operation on two matrices ..

the code

 //Fuzzy MAX-MIN Composition Code
    public string[,] Max(string[,] matrix1, string[,] matrix2, int order)
    {
        string[,] fuzzy = new string[order, order];
        double max = 0.0000;
        double min;

        for (int i = 0; i < order; i++)
        {
            for (int j = 0; j < order; j++)
            {
                fuzzy[i, j] = "0.0000";

                for (int k = 0; k < order; k++)
                {
                    max = Convert.ToDouble(fuzzy[i, j]);
                    min = Convert.ToDouble(fuzzy[i, j]);


                    min =Math.Min(Convert.ToDouble(matrix1[i, k]), Convert.ToDouble(matrix2[k, j]));
                    if(min > max)
                    {
                        fuzzy[i, j] = Convert.ToString((String.Format("{0:0.0000}", min)));

                    }
                    else
                    {
                        fuzzy[i, j] = Convert.ToString((String.Format("{0:0.0000}", max)));
                    }


                    //max = Math.Max(0.0000, min);   

                    //fuzzy[i, j] = Convert.ToString((String.Format("{0:0.0000}", min)));
                }
            }
        }
        return fuzzy;

    }

solved why the last row and column of array is zero?