Coupang vs Oracle Interview Questions
Coupang lists 49 LeetCode interview questions while Oracle lists 314. They share 29 problems — 59% of Coupang's bank and 9% of Oracle's. Focus on the overlap first, then drill into 20 Coupang-only and 285 Oracle-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 29 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Coupang and Oracle.
Step 2 — Company-specific depth: Add Coupang-specific problems like Split BST, Range Module, Find Pivot Index and Oracle-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Coupang skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
29 Shared Questions
High-priority problems to practice for both Coupang and Oracle.
| Problem | Difficulty |
|---|---|
| Word Break | Medium |
| Subsets | Medium |
| Decode String | Medium |
| LFU Cache | Hard |
| Longest Substring with At Most K Distinct Characters | Medium |
| LRU Cache | Medium |
| Course Schedule | Medium |
| Design In-Memory File System | Hard |
| Regular Expression Matching | Hard |
| Remove K Digits | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Design Hit Counter | Medium |
| Wildcard Matching | Hard |
| Number of Distinct Islands | Medium |
| Basic Calculator II | Medium |
| Number of Islands | Medium |
| Single Element in a Sorted Array | Medium |
| Search a 2D Matrix | Medium |
| Sliding Window Maximum | Hard |
| Group Anagrams | Medium |
| Find Median from Data Stream | Hard |
| Open the Lock | Medium |
| Basic Calculator III | Hard |
| Bus Routes | Hard |
| Search a 2D Matrix II | Medium |
| Distinct Subsequences | Hard |
| Reorganize String | Medium |
| Kth Largest Element in an Array | Medium |
| Basic Calculator | Hard |
Unique to Coupang (20)
Problems in Coupang's list that do not appear at Oracle.
| Problem | Difficulty |
|---|---|
| Split BST | Medium |
| Range Module | Hard |
| Find Pivot Index | Easy |
| Unique Paths II | Medium |
| Design Twitter | Medium |
| Shopping Offers | Medium |
| Longest Repeating Substring | Medium |
| Unique Paths | Medium |
| Possible Bipartition | Medium |
| Shortest Bridge | Medium |
| Find K Closest Elements | Medium |
| Longest Duplicate Substring | Hard |
Unique to Oracle (285)
Problems in Oracle's list that do not appear at Coupang.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Top K Frequent Elements | Medium |
| Valid Parentheses | Easy |
| Merge k Sorted Lists | Hard |
| Merge Intervals | Medium |
| Meeting Rooms II | Medium |
| Longest Palindromic Substring | Medium |
| Spiral Matrix | Medium |
| Minimum One Bit Operations to Make Integers Zero | Hard |
| Search in Rotated Sorted Array | Medium |
| Asteroid Collision | Medium |
| Remove All Adjacent Duplicates in String II | Medium |
Frequently Asked Questions
How many LeetCode questions do Coupang and Oracle share?
Coupang and Oracle share 29 LeetCode interview questions. 20 problems appear only in Coupang's list and 285 appear only in Oracle's list.
What topics overlap most between Coupang and Oracle?
The most common shared topics between Coupang and Oracle are String (15 shared questions), Array (12 shared questions), Hash Table (11 shared questions), Stack (5 shared questions), Recursion (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Coupang or Oracle?
Coupang has 2 Easy, 33 Medium, and 14 Hard questions. Oracle has 61 Easy, 194 Medium, and 59 Hard questions. Coupang has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Coupang and Oracle?
Start with the 29 shared problems since they cover what both companies ask most often. Then add 20 Coupang-specific and 20 Oracle-specific questions to round out your prep.