Tiktok Coding Interview Questions (2026)
Most-reported questions and how to practice them
349 coding questions reported by candidates for Tiktok, sorted by how often they were reported. Source: community-sourced LeetCode company lists.
What the Tiktok question data shows
Of the 349 questions reported for Tiktok, 70% are medium, 21% are hard and 9% are easy. The most reported are LRU Cache, Number of Islands, Longest Substring Without Repeating Characters, Trapping Rain Water, Merge Intervals.
This list comes from community-sourced LeetCode company lists. It covers coding questions only. It does not tell us how many rounds Tiktok runs, what each round covers, or what it pays, and those change by role, level and team, so we do not list them. Ask your recruiter what each round covers, and check the company's careers page.
Prepare for the rest of the loop with the coding interview patterns guide, the system design framework, and the STAR method guide. Written by Kieron.
Tiktok Interview Questions
349 LeetCode questions — sorted by frequency. Question frequency is community-sourced from public interview reports and may not reflect the current process; verify details with the employer.
Last reviewed: September 5, 2026 · Source: LeetCode company-wise interview questions (community reports) · Reviewed by the Aissence Editorial Team.
LRU Cache
Number of Islands
Longest Substring Without Repeating Characters
Trapping Rain Water
Merge Intervals
Course Schedule
Course Schedule II
Meeting Rooms II
Longest Increasing Subsequence
Number of Distinct Islands
Subarray With Elements Greater Than Varying Threshold
Longest Palindromic Substring
3Sum
Search in Rotated Sorted Array
N-Queens
Spiral Matrix
Text Justification
Sqrt(x)
Minimum Window Substring
Word Search
Tips for Success at Tiktok
Start with the 30 most reported Tiktok questions, then work down the list.
Mediums are the bulk of the list (70%), so spend most of your time there.
Time yourself: 20 to 30 minutes per medium, then explain your solution out loud as if to an interviewer.
After each problem write down the pattern and the signal that revealed it. Patterns transfer to problems you have not seen.
Pair coding practice with a system design framework and prepared behavioral stories; most loops include more than coding.
How to Practice for Tiktok Interviews
Practice answering out loud with an AI interviewer built from your resume and the job description, and get a score and specific fixes for each answer. We are not affiliated with Tiktok, and the mock interview is general practice rather than a simulation of Tiktok's own format.
- ✓ Free mock interview built from your resume and the job description
- ✓ Desktop Interview Copilot for live interviews, where the rules allow it
- ✓ Behavioral practice with feedback on structure and specifics
- ✓ System design practice with follow-up questions
Frequently Asked Questions
How many LeetCode questions should I practice for Tiktok?
Are these the actual Tiktok interview questions?
What is the difficulty mix for Tiktok?
What is the Tiktok interview process?
How do I prepare beyond coding questions?
Prepare for Your Tiktok Interview
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