{ "data": { "question": { "questionId": "468", "questionFrontendId": "468", "categoryTitle": "Algorithms", "boundTopicId": 1878, "title": "Validate IP Address", "titleSlug": "validate-ip-address", "content": "

Given a string queryIP, return "IPv4" if IP is a valid IPv4 address, "IPv6" if IP is a valid IPv6 address or "Neither" if IP is not a correct IP of any type.

\n\n

A valid IPv4 address is an IP in the form "x1.x2.x3.x4" where 0 <= xi <= 255 and xi cannot contain leading zeros. For example, "192.168.1.1" and "192.168.1.0" are valid IPv4 addresses while "192.168.01.1", "192.168.1.00", and "192.168@1.1" are invalid IPv4 addresses.

\n\n

A valid IPv6 address is an IP in the form "x1:x2:x3:x4:x5:x6:x7:x8" where:

\n\n\n\n

For example, "2001:0db8:85a3:0000:0000:8a2e:0370:7334" and "2001:db8:85a3:0:0:8A2E:0370:7334" are valid IPv6 addresses, while "2001:0db8:85a3::8A2E:037j:7334" and "02001:0db8:85a3:0000:0000:8a2e:0370:7334" are invalid IPv6 addresses.

\n\n

 

\n

Example 1:

\n\n
\nInput: queryIP = "172.16.254.1"\nOutput: "IPv4"\nExplanation: This is a valid IPv4 address, return "IPv4".\n
\n\n

Example 2:

\n\n
\nInput: queryIP = "2001:0db8:85a3:0:0:8A2E:0370:7334"\nOutput: "IPv6"\nExplanation: This is a valid IPv6 address, return "IPv6".\n
\n\n

Example 3:

\n\n
\nInput: queryIP = "256.256.256.256"\nOutput: "Neither"\nExplanation: This is neither a IPv4 address nor a IPv6 address.\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "验证IP地址", "translatedContent": "

给定一个字符串 queryIP。如果是有效的 IPv4 地址，返回 \"IPv4\" ；如果是有效的 IPv6 地址，返回 \"IPv6\" ；如果不是上述类型的 IP 地址，返回 \"Neither\" 。

\n\n

有效的IPv4地址 是 “x1.x2.x3.x4” 形式的IP地址。 其中 0 <= xi <= 255 且 xi 不能包含 前导零。例如: “192.168.1.1” 、 “192.168.1.0” 为有效IPv4地址， “192.168.01.1” 为无效IPv4地址; “192.168.1.00” 、 “192.168@1.1” 为无效IPv4地址。

\n\n

一个有效的IPv6地址 是一个格式为“x1:x2:x3:x4:x5:x6:x7:x8” 的IP地址，其中:

\n\n\n\n

例如 \"2001:0db8:85a3:0000:0000:8a2e:0370:7334\" 和 \"2001:db8:85a3:0:0:8A2E:0370:7334\" 是有效的 IPv6 地址，而 \"2001:0db8:85a3::8A2E:037j:7334\" 和 \"02001:0db8:85a3:0000:0000:8a2e:0370:7334\" 是无效的 IPv6 地址。

\n\n

 

\n\n

示例 1：

\n\n
\n输入：queryIP = \"172.16.254.1\"\n输出：\"IPv4\"\n解释：有效的 IPv4 地址，返回 \"IPv4\"\n
\n\n

示例 2：

\n\n
\n输入：queryIP = \"2001:0db8:85a3:0:0:8A2E:0370:7334\"\n输出：\"IPv6\"\n解释：有效的 IPv6 地址，返回 \"IPv6\"\n
\n\n

示例 3：

\n\n
\n输入：queryIP = \"256.256.256.256\"\n输出：\"Neither\"\n解释：既不是 IPv4 地址，又不是 IPv6 地址\n
\n\n

 

\n\n

提示：

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