Solve linked list, string filtering, and puzzle

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Quick Overview

This multi-part question evaluates proficiency with linked-list pointer manipulation and constant-space linear-time algorithms, pattern-driven string transformation with attention to iteration semantics and edge-case handling, and combinatorial reasoning about constrained resource partitioning.

Solve linked list, string filtering, and puzzle

Company: TikTok

Role: Software Engineer

Category: Coding & Algorithms

Difficulty: medium

Interview Round: Technical Screen

Overview: This multi-part question evaluates proficiency with linked-list pointer manipulation and constant-space linear-time algorithms, pattern-driven string transformation with attention to iteration semantics and edge-case handling, and combinatorial reasoning about constrained resource partitioning.

Read the full TikTok Software Engineer interview experience this question came from

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TikTok
Jan 6, 2026
mediumSoftware EngineerTechnical ScreenCoding & Algorithms
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