给定字符串s = '0a1b2c3d4e5f6g',以下能得到'6543210'的是: A: s[-2::2] B: s[-2:0:2] C: s[-2::-2] D: s[:]
给定字符串s = '0a1b2c3d4e5f6g',以下能得到'6543210'的是: A: s[-2::2] B: s[-2:0:2] C: s[-2::-2] D: s[:]
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给定字符串s = '0a1b2c3d4e5f6g',以下能得到'6543210'的是: A: s[-2::2] B: s[-2:0:2] C: s[-2::-2] D: s[:]