题解 | 统计字符
import sys
s = input()
cd = 0
ca = 0
cno = 0
co = 0
for i in s:
if i.isdigit():
cd += 1
elif i.isalpha():
ca += 1
elif i.isspace():
cno += 1
else:
co +=1
print(ca,cno,cd,co,sep="\n")
import sys
s = input()
cd = 0
ca = 0
cno = 0
co = 0
for i in s:
if i.isdigit():
cd += 1
elif i.isalpha():
ca += 1
elif i.isspace():
cno += 1
else:
co +=1
print(ca,cno,cd,co,sep="\n")
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