Citadel vs TikTok Interview Questions
Citadel lists 101 LeetCode interview questions while TikTok lists 351. They share 60 problems — 59% of Citadel's bank and 17% of TikTok's. Focus on the overlap first, then drill into 41 Citadel-only and 291 TikTok-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 60 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Citadel and TikTok.
Step 2 — Company-specific depth: Add Citadel-specific problems like Longest Non-decreasing Subarray From Two Arrays, Minimum Knight Moves, Palindromic Substrings and TikTok-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Citadel skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
60 Shared Questions
High-priority problems to practice for both Citadel and TikTok.
Showing top 30 of 60 shared problems.
Unique to Citadel (41)
Problems in Citadel's list that do not appear at TikTok.
Unique to TikTok (291)
Problems in TikTok's list that do not appear at Citadel.
Frequently Asked Questions
How many LeetCode questions do Citadel and TikTok share?
Citadel and TikTok share 60 LeetCode interview questions. 41 problems appear only in Citadel's list and 291 appear only in TikTok's list.
What topics overlap most between Citadel and TikTok?
The most common shared topics between Citadel and TikTok are Array (18 shared questions), Dynamic Programming (9 shared questions), Design (7 shared questions), String (7 shared questions), Hash Table (6 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Citadel or TikTok?
Citadel has 5 Easy, 60 Medium, and 36 Hard questions. TikTok has 34 Easy, 245 Medium, and 72 Hard questions. Citadel has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Citadel and TikTok?
Start with the 60 shared problems since they cover what both companies ask most often. Then add 20 Citadel-specific and 20 TikTok-specific questions to round out your prep.