Capital One vs Oracle Interview Questions
Capital One lists 47 LeetCode interview questions while Oracle lists 314. They share 24 problems — 51% of Capital One's bank and 8% of Oracle's. Focus on the overlap first, then drill into 23 Capital One-only and 290 Oracle-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 24 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Capital One and Oracle.
Step 2 — Company-specific depth: Add Capital One-specific problems like Block Placement Queries, Minimum Operations to Write the Letter Y on a Grid, Candy Crush and Oracle-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Capital One skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
24 Shared Questions
High-priority problems to practice for both Capital One and Oracle.
| Problem | Difficulty |
|---|---|
| Simple Bank System | Medium |
| Spiral Matrix | Medium |
| Text Justification | Hard |
| Rotate Image | Medium |
| Simplify Path | Medium |
| Largest Rectangle in Histogram | Hard |
| Best Time to Buy and Sell Stock | Easy |
| Palindrome Number | Easy |
| Word Search | Medium |
| Coin Change | Medium |
| Design File System | Medium |
| Merge Intervals | Medium |
| Add Strings | Easy |
| Non-overlapping Intervals | Medium |
| Number of Islands | Medium |
| Word Search II | Hard |
| Add Two Numbers | Medium |
| LRU Cache | Medium |
| Merge Two Sorted Lists | Easy |
| Meeting Rooms II | Medium |
| Rotate Array | Medium |
| Roman to Integer | Easy |
| Valid Parentheses | Easy |
| Reverse Nodes in k-Group | Hard |
Unique to Capital One (23)
Problems in Capital One's list that do not appear at Oracle.
Unique to Oracle (290)
Problems in Oracle's list that do not appear at Capital One.
| Problem | Difficulty |
|---|---|
| Longest Substring Without Repeating Characters | Medium |
| Two Sum | Easy |
| Group Anagrams | Medium |
| Top K Frequent Elements | Medium |
| Sliding Window Maximum | Hard |
| Merge k Sorted Lists | Hard |
| Longest Palindromic Substring | Medium |
| Minimum One Bit Operations to Make Integers Zero | Hard |
| LFU Cache | 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 Capital One and Oracle share?
Capital One and Oracle share 24 LeetCode interview questions. 23 problems appear only in Capital One's list and 290 appear only in Oracle's list.
What topics overlap most between Capital One and Oracle?
The most common shared topics between Capital One and Oracle are Array (14 shared questions), String (8 shared questions), Math (6 shared questions), Matrix (5 shared questions), Hash Table (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Capital One or Oracle?
Capital One has 9 Easy, 28 Medium, and 10 Hard questions. Oracle has 61 Easy, 194 Medium, and 59 Hard questions. Capital One has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Capital One and Oracle?
Start with the 24 shared problems since they cover what both companies ask most often. Then add 20 Capital One-specific and 20 Oracle-specific questions to round out your prep.