C#交錯數組C#的交錯數組為什麼要倒著定義？

理論C#的交錯數組為什麼要倒著定義？
code：

        private double[][][] CoordReconstruct(double[] arr )        {            double[] subSubArr=new double[2];            double[][] subArr=new double[yAxis+1][];            for (int i = 0; i < yAxis + 1;i++ )            {                subArr[i] = subSubArr;            }            double[][][] newArr=new double[xAxis+1][][];            for (int i = 0; i < xAxis + 1; i++)            {                newArr[i] = subArr;            }            int index = 0;            for (int j = 0; j < yAxis; j++)            {                for (int i = 0; i < xAxis; i++)                {                    for (int fla = 0; fla < 2; )                    {                        newArr[i][j][fla] = arr[index];                                               index++;                        fla++;                    }                }            }            return newArr;        }