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打卡

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xlwb_Mew

#1 Created at ... [Delete] [Delete and Lock User]

-- coding: utf-8 --

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)

期待输出:

A --> C

A --> B

C --> B

A --> C

B --> A

B --> C

A --> C

move(3, 'A', 'B', 'C')

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