ByteDance (TikTok) Coding Interview Questions (2026)
Most-reported questions and how to practice them
63 coding questions reported by candidates for ByteDance (TikTok), sorted by how often they were reported. Source: community-sourced LeetCode company lists.
What the ByteDance (TikTok) question data shows
Of the 63 questions reported for ByteDance (TikTok), 79% are medium, 14% are hard and 6% are easy. The most reported are LRU Cache, First Day Where You Have Been in All the Rooms, Remove Duplicate Letters, Smallest Subsequence of Distinct Characters, Combination Sum.
This list comes from community-sourced LeetCode company lists. It covers coding questions only. It does not tell us how many rounds ByteDance (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.
ByteDance (TikTok) Interview Questions
63 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
First Day Where You Have Been in All the Rooms
Remove Duplicate Letters
Smallest Subsequence of Distinct Characters
Combination Sum
Merge Intervals
Number of Islands
Course Schedule
Basic Calculator II
Maximal Square
Shortest Bridge
Search in Rotated Sorted Array
Trapping Rain Water
House Robber
Decode String
Two Sum
Combination Sum II
Top K Frequent Elements
Rotting Oranges
Longest Common Subsequence
Tips for Success at ByteDance (TikTok)
Start with the 30 most reported ByteDance (TikTok) questions, then work down the list.
Mediums are the bulk of the list (79%), 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 ByteDance (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 ByteDance (TikTok), and the mock interview is general practice rather than a simulation of ByteDance (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
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