IBM vs Walmart Labs Interview Questions
IBM lists 115 LeetCode interview questions while Walmart Labs lists 144. They share 35 problems — 30% of IBM's bank and 24% of Walmart Labs's. Focus on the overlap first, then drill into 80 IBM-only and 109 Walmart Labs-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 35 overlapping problems first. These are the highest-yield questions for candidates interviewing at both IBM and Walmart Labs.
Step 2 — Company-specific depth: Add IBM-specific problems like Find the Smallest Divisor Given a Threshold, Gray Code, Exclusive Time of Functions and Walmart Labs-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Walmart Labs skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
35 Shared Questions
High-priority problems to practice for both IBM and Walmart Labs.
| Problem | Difficulty |
|---|---|
| 3Sum | Medium |
| Integer to Roman | Medium |
| Roman to Integer | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Two Sum | Easy |
| Meeting Rooms II | Medium |
| Merge Intervals | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Longest Common Prefix | Easy |
| Valid Parentheses | Easy |
| Maximum Sum of Distinct Subarrays With Length K | Medium |
| Longest Consecutive Sequence | Medium |
| Longest Palindromic Substring | Medium |
| Maximum Subarray | Medium |
| Spiral Matrix | Medium |
| Divide Intervals Into Minimum Number of Groups | Medium |
| Group Anagrams | Medium |
| Subarray Product Less Than K | Medium |
| Trapping Rain Water | Hard |
| Product of Array Except Self | Medium |
| Next Permutation | Medium |
| Longest Increasing Subsequence | Medium |
| Subarray Sum Equals K | Medium |
| Rotate Array | Medium |
| Median of Two Sorted Arrays | Hard |
| Subsets | Medium |
| Find Minimum in Rotated Sorted Array | Medium |
| Reverse Integer | Medium |
| Remove Duplicates from Sorted Array | Easy |
| Generate Parentheses | Medium |
Showing top 30 of 35 shared problems.
Unique to IBM (80)
Problems in IBM's list that do not appear at Walmart Labs.
Unique to Walmart Labs (109)
Problems in Walmart Labs's list that do not appear at IBM.
Frequently Asked Questions
How many LeetCode questions do IBM and Walmart Labs share?
IBM and Walmart Labs share 35 LeetCode interview questions. 80 problems appear only in IBM's list and 109 appear only in Walmart Labs's list.
What topics overlap most between IBM and Walmart Labs?
The most common shared topics between IBM and Walmart Labs are Array (22 shared questions), Two Pointers (8 shared questions), Hash Table (8 shared questions), String (8 shared questions), Dynamic Programming (6 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: IBM or Walmart Labs?
IBM has 33 Easy, 73 Medium, and 9 Hard questions. Walmart Labs has 22 Easy, 96 Medium, and 26 Hard questions. Walmart Labs has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both IBM and Walmart Labs?
Start with the 35 shared problems since they cover what both companies ask most often. Then add 20 IBM-specific and 20 Walmart Labs-specific questions to round out your prep.