Oracle vs TikTok Interview Questions
Oracle lists 314 LeetCode interview questions while TikTok lists 351. They share 168 problems — 54% of Oracle's bank and 48% of TikTok's. Focus on the overlap first, then drill into 146 Oracle-only and 183 TikTok-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 168 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Oracle and TikTok.
Step 2 — Company-specific depth: Add Oracle-specific problems like Minimum One Bit Operations to Make Integers Zero, Min Stack, Minimum Absolute Difference 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
168 Shared Questions
High-priority problems to practice for both Oracle and TikTok.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Number of Islands | Medium |
| Two Sum | Easy |
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Sliding Window Maximum | Hard |
| Valid Parentheses | Easy |
| Merge k Sorted Lists | Hard |
| Merge Intervals | Medium |
| Meeting Rooms II | Medium |
| Longest Palindromic Substring | Medium |
| Spiral Matrix | Medium |
| LFU Cache | Hard |
| Search in Rotated Sorted Array | Medium |
| Asteroid Collision | Medium |
| Remove All Adjacent Duplicates in String II | Medium |
| Container With Most Water | Medium |
| 3Sum | Medium |
| Reverse Linked List | Easy |
| Trapping Rain Water | Hard |
| Longest Consecutive Sequence | Medium |
| Rotting Oranges | Medium |
| Maximum Subarray | Medium |
| Roman to Integer | Easy |
| Count Pairs Of Similar Strings | Easy |
| Koko Eating Bananas | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Binary Tree Right Side View | Medium |
| Lowest Common Ancestor of a Binary Tree | Medium |
Showing top 30 of 168 shared problems.
Unique to Oracle (146)
Problems in Oracle's list that do not appear at TikTok.
Unique to TikTok (183)
Problems in TikTok's list that do not appear at Oracle.
Frequently Asked Questions
How many LeetCode questions do Oracle and TikTok share?
Oracle and TikTok share 168 LeetCode interview questions. 146 problems appear only in Oracle's list and 183 appear only in TikTok's list.
What topics overlap most between Oracle and TikTok?
The most common shared topics between Oracle and TikTok are Array (19 shared questions), Hash Table (9 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: Oracle or TikTok?
Oracle has 61 Easy, 194 Medium, and 59 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 Oracle and TikTok?
Start with the 168 shared problems since they cover what both companies ask most often. Then add 20 Oracle-specific and 20 TikTok-specific questions to round out your prep.