题解 | #字符个数统计#
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
str = input()
num=[]
for i in str:
if(i in num):
continue
else:
num.append(i)
print(len(num))
字符个数统计
https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50
str = input()
num=[]
for i in str:
if(i in num):
continue
else:
num.append(i)
print(len(num))
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