Quick Overview

Restore every valid IPv4 address by inserting three dots into a string of digits. The task defines segment bounds, leading-zero rules, exact digit use, lexicographic output, impossible cases, and two examples for later cross-language console verification.

Restore Every Valid IP Address

Company: TikTok

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Technical Screen

Overview: Restore every valid IPv4 address by inserting three dots into a string of digits. The task defines segment bounds, leading-zero rules, exact digit use, lexicographic output, impossible cases, and two examples for later cross-language console verification.

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