题解 | #合法IP#
合法IP
https://www.nowcoder.com/practice/995b8a548827494699dc38c3e2a54ee9
def checkip(ip):
if len(ip) == 4:
for i in range(4):
if (
not ip[i].isdigit()
or (ip[i][0] == "0" and len(ip[i]) > 1)
or int(ip[i]) < 0
or int(ip[i]) > 255
):
return False
return True
return False
if checkip(input().split(".")):
print("YES")
else:
print("NO")
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