179. Valid IP Address

Write a function solve that validates if a string is a valid IPv4 address. A valid IPv4 address consists of exactly 4 integers separated by dots, where each integer is between 0 and 255 (inclusive) and has no leading zeros.

Example:
Input: "192.168.1.1"
Output: true

Example 2:
Input: "256.1.1.1"
Output: false

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