def move(n,a,b,c):
if n==1:
print(a,'-->',c)
else:
move(n-1,a,c,b)
move(n-1,b,a,c)
num=int(input('请输入层数:'))
move(num,'A','B','C')
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佳jiajia乐
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)
num=int(input('请输入层数:'))
move(num,'A','B','C')