Restore IP Addresses
Explore how to restore valid IP addresses from a digit string by inserting exactly three dots. Understand backtracking strategies to handle constraints such as segment range and leading zeros to find all possible valid combinations.
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Statement
A valid IP address consists of four numeric segments separated by single dots. Each segment must be an integer between 0 and 255 (inclusive), and leading zeros are not allowed unless the segment is exactly ‘0.”
For instance, “10.0.1.25” and “172.16.0.5” are valid IP addresses, while “01.200.100.3,” “256.100.50.25,” and “172.16.0.500” are invalid.
Given a string s made up of digits only, return all possible valid IP addresses that ...