def move(n,a="A",b="B",c="C"):
if n==1:
return print(a,'-->',c)
else:
move(n-1,a,c,b)
print(a,'-->',c)
move(n-1,b,a,c)
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少易wang言
def move(n,a="A",b="B",c="C"):
if n==1:
return print(a,'-->',c)
else:
move(n-1,a,c,b)
print(a,'-->',c)
move(n-1,b,a,c)