Class Solution
- java.lang.Object
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- g0401_0500.s0468_validate_ip_address.Solution
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public class Solution extends Object
468 - Validate IP Address.Medium
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.A valid IPv4 address is an IP in the form
“x1.x2.x3.x4”
where0 <= xi <= 255
andxi
cannot contain leading zeros. For example,"192.168.1.1"
and"192.168.1.0"
are valid IPv4 addresses but"192.168.01.1"
, while"192.168.1.00"
and"[email protected]"
are invalid IPv4 addresses.A valid IPv6 address is an IP in the form
“x1:x2:x3:x4:x5:x6:x7:x8”
where:1 <= xi.length <= 4
xi
is a hexadecimal string which may contain digits, lower-case English letter ('a'
to'f'
) and upper-case English letters ('A'
to'F'
).- Leading zeros are allowed in
xi
.
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.Example 1:
Input: queryIP = “172.16.254.1”
Output: “IPv4”
Explanation: This is a valid IPv4 address, return “IPv4”.
Example 2:
Input: queryIP = “2001:0db8:85a3:0:0:8A2E:0370:7334”
Output: “IPv6”
Explanation: This is a valid IPv6 address, return “IPv6”.
Example 3:
Input: queryIP = “256.256.256.256”
Output: “Neither”
Explanation: This is neither a IPv4 address nor a IPv6 address.
Constraints:
queryIP
consists only of English letters, digits and the characters'.'
and':'
.
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Constructor Summary
Constructors Constructor Description Solution()
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