Oracle vs Walmart Labs Interview Questions
Oracle lists 314 LeetCode interview questions while Walmart Labs lists 144. They share 103 problems — 33% of Oracle's bank and 72% of Walmart Labs's. Focus on the overlap first, then drill into 211 Oracle-only and 41 Walmart Labs-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 103 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Oracle and Walmart Labs.
Step 2 — Company-specific depth: Add Oracle-specific problems like Minimum One Bit Operations to Make Integers Zero, Reverse Linked List, Minimum Absolute Difference and Walmart Labs-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Oracle skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
103 Shared Questions
High-priority problems to practice for both Oracle and Walmart Labs.
| 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 |
| Trapping Rain Water | Hard |
| Longest Consecutive Sequence | Medium |
| Min Stack | Medium |
| Rotting Oranges | Medium |
| Maximum Subarray | Medium |
| Roman to Integer | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Binary Tree Right Side View | Medium |
| Generate Parentheses | Medium |
| Decode String | Medium |
| Course Schedule | Medium |
Showing top 30 of 103 shared problems.
Unique to Oracle (211)
Problems in Oracle's list that do not appear at Walmart Labs.
Unique to Walmart Labs (41)
Problems in Walmart Labs's list that do not appear at Oracle.
Frequently Asked Questions
How many LeetCode questions do Oracle and Walmart Labs share?
Oracle and Walmart Labs share 103 LeetCode interview questions. 211 problems appear only in Oracle's list and 41 appear only in Walmart Labs's list.
What topics overlap most between Oracle and Walmart Labs?
The most common shared topics between Oracle and Walmart Labs are Array (17 shared questions), Hash Table (8 shared questions), String (8 shared questions), Stack (6 shared questions), Sorting (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Oracle or Walmart Labs?
Oracle has 61 Easy, 194 Medium, and 59 Hard questions. Walmart Labs has 22 Easy, 96 Medium, and 26 Hard questions. Oracle has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Oracle and Walmart Labs?
Start with the 103 shared problems since they cover what both companies ask most often. Then add 20 Oracle-specific and 20 Walmart Labs-specific questions to round out your prep.