题解 | #字符个数统计#
字符个数统计
http://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
d=input() str_=list() n=len(d) for i in range(n): if d[i] not in str_: str_+=d[i] num=len(str_) print(num)
字符个数统计
http://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
d=input() str_=list() n=len(d) for i in range(n): if d[i] not in str_: str_+=d[i] num=len(str_) print(num)
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