\u8fd9\u4e2a\u9898\u4e0d\u8981\u505a\u4e86\uff0c\u901a\u8fc7\u7387\u4f4e\u7eaf\u7cb9\u662fSB\uff0c\u4f60\u6309\u7167\u6807\u51c6\u7684IPv4\/IPv6\u4ee5\u53ca\u9898\u76ee\u7684\u8981\u6c42\u5199\u4ee3\u7801\uff0c\u4ecd\u7136\u901a\u4e0d\u8fc7\uff0cSB\uff01<\/p>\n
\u9898\u76ee\u63d0\u793a\u4e5f\u4e0d\u8981\u4fe1\uff01\uff01\uff01<\/p>\n
\u6700\u597d\u7684\u529e\u6cd5\u5c31\u662f\u4e00\u6b21\u6b21\u8bd5\uff0c\u4e00\u6b21\u6b21\u51fa\u9519\u627e\u5230\u7528\u4f8b\u8fdb\u884c\u6539\u3002<\/p>\n
\u6d6a\u8d39\u65f6\u95f4\u548c\u7cbe\u529b\u3002<\/p>\n
\u70c2\u9898\uff01<\/p>\n
\u60f3\u4f53\u9a8c\u7684\u53ef\u4ee5\u63d0\u4ea4\u6211\u4e0b\u9762\u7684\u4f8b\u7a0b\uff0c\u73a9\u73a9\u5c31\u7b97\u4e86\u3002<\/p>\n
import re\r\n\r\n\r\nclass Solution:\r\n def validIPAddress(self, IP):\r\n \"\"\"\r\n :type IP: str\r\n :rtype: str\r\n \"\"\"\r\n # \u5224\u65ad\u662f\u5426\u4e3aIPv4 \u5e76\u4e14\u662f4\u6bb5\r\n if \".\" in IP and len(IP.split('.')) == 4:\r\n if self.IPv4(IP):\r\n return \"IPv4\"\r\n # \u5224\u65ad\u662f\u5426\u4e3aIPv6 \u5e76\u4e14\u662f8\u6bb5\r\n elif \":\" in IP and len(IP.split(':')) == 8:\r\n if self.IPv6(IP):\r\n return \"IPv6\"\r\n return \"Neither\"\r\n\r\n def IPv4(self, IP):\r\n for item in IP.split('.'):\r\n if not item: # \u5224\u65ad\u4e3a\u7a7a\r\n return False\r\n if not re.findall(\"^\\d+$\", item): # \u5224\u65ad\u662f\u5426\u662f\u7eaf\u6570\u5b57\r\n return False\r\n if int(item) > 255 or int(item) < 0: # \u5224\u65ad\u662f\u5426\u5c5e\u4e8e0-255\r\n return False\r\n if str(int(item)) != str(item): # \u5224\u65ad\u662f\u5426\u6709\u591a\u4f59\u76840\r\n return False\r\n return True\r\n\r\n def IPv6(self, IP):\r\n for item in IP.split(\":\"):\r\n if not item: # \u5224\u65ad\u4e3a\u7a7a\r\n return False\r\n if not re.findall(\"^[a-fA-F\\d]+$\", item): # \u5224\u65ad\u662f\u5426\u6709\u5176\u4ed6\u5b57\u7b26\r\n return False\r\n if len(item) > 4: # \u5224\u65ad\u957f\u5ea6<=4\r\n return False\r\n\r\n return True<\/pre>\n","protected":false},"excerpt":{"rendered":"\u8fd9\u4e2a\u9898\u4e0d\u8981\u505a\u4e86\uff0c\u901a\u8fc7\u7387\u4f4e\u7eaf\u7cb9\u662fSB\uff0c\u4f60\u6309 … More leetcode #468. \u9a8c\u8bc1IP\u5730\u5740 \u8b66\u544a<\/span>