题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
import sys
import re
def statistics(str):
# 字符串去空格
# 字符串检查ASCII码范围
# 字符串去重
l_result = []
for c in str:
if c != '\n' and c not in l_result:
l_result.append(c)
# 统计长度
return len(l_result)
if __name__ == '__main__':
str = sys.stdin.readline().strip()
result = statistics(str)
print(result)
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