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Practice Validate IP Address

Read the task, work through the examples, and check your approach against the constraints. Use the original LeetCode task for coding and submissions.

Medium#468
LeetCode Problem

Validate IP Address

String

Problem Statement

Classify queryIP as "IPv4", "IPv6", or "Neither" using these rules. IPv4 has exactly four nonempty decimal components separated by periods. Each component is an integer from 0 through 255 and has no leading zero unless it is exactly "0". IPv6 has exactly eight nonempty components separated by colons. Each component has one to four hexadecimal characters: 0–9, a–f, or A–F. Leading zeros are permitted in IPv6 components. This problem requires all eight IPv6 components explicitly; an empty component or "::" abbreviation is invalid.

Source: Validate IP Address on LeetCode. Use the original task for its coding environment and submissions.

Examples

# Example 1

Input
queryIP = "172.16.254.1"
Output
"IPv4"

# Example 2

Input
queryIP = "2001:0db8:85a3:0:0:8A2E:0370:7334"
Output
"IPv6"

# Example 3

Input
queryIP = "256.256.256.256"
Output
"Neither"

Constraints

queryIP consists only of English letters, digits and the characters '.' and ':'.

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← Previous Unique Substrings in Wraparound StringNext → Implement Rand10() Using Rand7()

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