螺旋矩阵

编写一个程序Zifu，该程序运行后，用户根据提示输入范围的上限和下限，随即产生一个该范围的字符

杨辉三角-Spiral Matrix write a program Zifu, the program is running, the user prompted to enter the range of upper and lower limits, then generate a range of characters in the Yang Hui triangle