一个可以生成从0-999999数字的程序,并且可以保存生成的数字,可以定义用几个零进行占位,例如001,002,003,004,005,...010,011,....099,1-0-999999 can be generated from a number of procedures and can be saved to generate figures, can be defined to carry out with a few zero-footprint, for example, 0