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Walmart Labs Interview Questions (143)

Coding problems reported from Walmart Labs interviews and online assessments.

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A private sheet of Walmart Labs's most asked problems with a two-week finish date.
Questions143
Easy22
Medium95
Hard26
Asked in 30 days1as of 16 Aug 2026
Asks mostArray 81String 36Hash Table 35Dynamic Programming 21Two Pointers 20Sorting 18Breadth-First Search 16Math 15Stack 14Binary Search 13
Most asked first
TitleSolutionAcceptDifficultyAsked
1. Two SumVideo
Solution57.8%Easy
Last 6 months
3. Longest Substring Without Repeating CharactersVideo
Solution39.9%Medium
Last 6 months
146. LRU CacheVideo
Solution48.2%Medium
49. Group AnagramsVideo
Solution73.0%Medium
Last 3 months
139. Word BreakVideo
Solution49.8%Medium
3005. Count Elements With Maximum FrequencyVideo
Solution79.8%Easy
3090. Maximum Length Substring With Two OccurrencesVideo
Solution77.4%Easy
128. Longest Consecutive SequenceVideo
Solution47.0%Medium
460. LFU CacheVideo
Solution50.0%Hard
Last 6 months
567. Permutation in StringVideo
Solution49.8%Medium
Last 6 months
12. Integer to RomanVideo
Solution71.8%Medium
36. Valid SudokuVideo
Solution64.9%Medium
41. First Missing PositiveVideo
Solution43.8%Hard
73. Set Matrix ZeroesVideo
Solution63.8%Medium
76. Minimum Window SubstringVideo
Solution48.3%Hard
106. Construct Binary Tree from Inorder and Postorder TraversalVideo
Solution69.4%Medium
347. Top K Frequent ElementsVideo
Solution67.3%Medium
387. First Unique Character in a StringVideo
Solution66.4%Easy
560. Subarray Sum Equals KVideo
Solution48.2%Medium
2461. Maximum Sum of Distinct Subarrays With Length KVideo
Solution43.5%Medium
13. Roman to IntegerVideo
Solution67.0%Easy
138. Copy List with Random PointerVideo
Solution63.8%Medium
305. Number of Islands IIVideoPremium
Solution40.5%Hard
395. Longest Substring with At Least K Repeating CharactersVideo
Solution46.8%Medium
438. Find All Anagrams in a StringVideo
Solution54.7%Medium
442. Find All Duplicates in an ArrayVideo
Solution76.8%Medium
451. Sort Characters By FrequencyVideo
Solution75.8%Medium
525. Contiguous ArrayVideo
Solution52.2%Medium
694. Number of Distinct IslandsVideoPremium
Solution62.8%Medium
1122. Relative Sort ArrayVideo
Solution75.4%Easy
2402. Meeting Rooms IIIVideo
Solution51.6%Hard
2423. Remove Letter To Equalize FrequencyVideo
Solution19.3%Easy
697. Degree of an ArrayVideo
Solution58.8%Easy
815. Bus RoutesVideo
Solution47.3%Hard
987. Vertical Order Traversal of a Binary TreeVideo
Solution54.6%Hard
Showing 1–35 of 35