Apple vs TikTok Interview Questions
Apple lists 300 LeetCode interview questions while TikTok lists 351. They share 148 problems — 49% of Apple's bank and 42% of TikTok's. Focus on the overlap first, then drill into 152 Apple-only and 203 TikTok-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 148 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Apple and TikTok.
Step 2 — Company-specific depth: Add Apple-specific problems like Design Hit Counter, Product of Array Except Self, Reverse Integer and TikTok-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: TikTok skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
148 Shared Questions
High-priority problems to practice for both Apple and TikTok.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Two Sum | Easy |
| Number of Islands | Medium |
| Merge Intervals | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Longest Common Prefix | Easy |
| Rotate Array | Medium |
| Reverse Linked List | Easy |
| Valid Sudoku | Medium |
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Course Schedule II | Medium |
| Course Schedule | Medium |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Valid Palindrome | Easy |
| Rotate Image | Medium |
| Reverse Words in a String | Medium |
| Kth Largest Element in an Array | Medium |
| Spiral Matrix | Medium |
| Best Time to Buy and Sell Stock II | Medium |
| Maximum Subarray | Medium |
| Merge k Sorted Lists | Hard |
| Meeting Rooms II | Medium |
| Trapping Rain Water | Hard |
| Time Based Key-Value Store | Medium |
| Lowest Common Ancestor of a Binary Tree | Medium |
| Subarray Sum Equals K | Medium |
| Median of Two Sorted Arrays | Hard |
| Find First and Last Position of Element in Sorted Array | Medium |
Showing top 30 of 148 shared problems.
Unique to Apple (152)
Problems in Apple's list that do not appear at TikTok.
| Problem | Difficulty |
|---|---|
| Design Hit Counter | Medium |
| Product of Array Except Self | Medium |
| Reverse Integer | Medium |
| Subarray Product Less Than K | Medium |
| Reverse Bits | Easy |
| Design Circular Queue | Medium |
| Number of 1 Bits | Easy |
| Min Stack | Medium |
| Merge Sorted Array | Easy |
| Find the Index of the First Occurrence in a String | Easy |
| Peeking Iterator | Medium |
| Binary Tree Level Order Traversal | Medium |
Unique to TikTok (203)
Problems in TikTok's list that do not appear at Apple.
Frequently Asked Questions
How many LeetCode questions do Apple and TikTok share?
Apple and TikTok share 148 LeetCode interview questions. 152 problems appear only in Apple's list and 203 appear only in TikTok's list.
What topics overlap most between Apple and TikTok?
The most common shared topics between Apple and TikTok are Array (19 shared questions), Hash Table (8 shared questions), String (7 shared questions), Sorting (5 shared questions), Two Pointers (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Apple or TikTok?
Apple has 76 Easy, 178 Medium, and 46 Hard questions. TikTok has 34 Easy, 245 Medium, and 72 Hard questions. TikTok has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Apple and TikTok?
Start with the 148 shared problems since they cover what both companies ask most often. Then add 20 Apple-specific and 20 TikTok-specific questions to round out your prep.