题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
strings = input() index = [] for i in strings: if strings.find(i) not in index: index.append(strings.find(i)) print(len(index))
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
strings = input() index = [] for i in strings: if strings.find(i) not in index: index.append(strings.find(i)) print(len(index))
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