题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
s=input()
dic=[]
ans=0
for i in s:
if i in dic:
continue
else:
dic.append(i)
ans+=1
print(ans)
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
s=input()
dic=[]
ans=0
for i in s:
if i in dic:
continue
else:
dic.append(i)
ans+=1
print(ans)
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