题解 | #字符个数统计#
字符个数统计
http://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
list = []
for i in range(len(n)):
if i in list:continue
else:
if ord(n[i])>=0 and ord(n[i])<=127: #查看ASCII码，筛选满足范围的字符
if n[i] in list: #去重
continue
else:
list.append(n[i])
else:break
print(len(list))
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