python 汉诺塔



def move(n,a,b,c):
    if n == 1:
        print(a,'-->',c)
    else :
        move(n-1,a,c,b)
        print(a,'-->',c)
        move(n-1,b,a,c)
a = input('input the num:')
move(a,'x','y','z')