程序实现的主要功能:给定三个塔[定为塔1，塔2，塔3]，初始时塔1上有碟子，要将塔1上的碟子搬移到塔2上去。-Procedures to achieve the main function: to set the three towers [for Tower 1, Tower 2, Tower 3], initially has a plate on one tower, one tower to move the plate to the tower go up 2.