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12
day2/条件循环.py
12
day2/条件循环.py
@ -20,6 +20,12 @@ for i in a:
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b = i + b#从右边倒着加字符
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print(b)
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"""
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# for i in 0,3 为什么i会输出1和3
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"""
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str = '123'
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print(str[3])为什么会超范围
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"""
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#此处开始
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str = input("")
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length = len(str)
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num = 0
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@ -28,8 +34,4 @@ for i in range(0, length):
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num = length - i - 1
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shot += str[num]
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print(shot)
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# for i in 0,3 为什么i会输出1和3
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"""
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str = '123'
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print(str[3])为什么会超范围
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"""
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