题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
str1 = input() set1 = set() for i in range(len(str1)): set1.add(str1[i]) print(len(set1))
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
str1 = input() set1 = set() for i in range(len(str1)): set1.add(str1[i]) print(len(set1))
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