# 汉诺塔 a = "A" b = "B" c = "C" def hano(a,b,c,n): if n == 1: print("{} --> {}".format(a,c)) if n == 2: print("{} --> {}".format(a,c)) print("{} --> {}".format(a,b)) print("{} --> {}".format(b,c)) return None hano(a,n - 1) print("{} --> {}".format(a,c)) hano(b,a,n - 1) hano(a,5)
A --> C A --> B B --> C A --> C B --> C B --> A A --> C A --> C B --> C B --> A A --> C B --> C A --> C A --> B B --> C A --> C B --> C B --> A A --> C B --> C A --> C A --> B B --> C B --> C A --> C A --> B B --> C A --> C B --> C B --> A A --> C