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Walmart-labs Master DSA Sheet

This compilation contains exclusive, previously asked data structure and algorithm questions from real Walmart-labs interviews. Focus on these core problem patterns to confidently tackle even the hardest interview challenges.

top-specificwalmart-labs-prep
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152
Course Schedule II
Medium
Top K Frequent Words
Medium
Max Stack
Hard
Min Stack
Medium
Valid Parentheses
Easy
Spiral Matrix
Medium
Meeting Rooms II
Medium
Asteroid Collision
Medium
Zigzag Conversion
Medium
N-Queens II
Hard
Furthest Building You Can Reach6 Months
Medium
Product of Array Except Self
Medium
Divide Intervals Into Minimum Number of Groups
Medium
Merge Intervals
Medium
Pow(x, n)
Medium
Longest Substring Without Repeating Characters6 Months
Medium
Copy List with Random Pointer6 Months
Medium
Next Permutation
Medium
Longest Palindromic Substring3 Months
Medium
Diameter of Binary Tree
Easy
Maximum Product Subarray
Medium
Generate Parentheses6 Months
Medium
Trapping Rain Water6 Months
Hard
Koko Eating Bananas
Medium
Minimum Window Substring
Hard
Count Elements With Maximum Frequency
Easy
XOR Operation in an Array
Easy
Minimum Number of Operations to Make Arrays Similar
Hard
Rotate Image
Medium
Permutation in String3 Months
Medium
Find All Anagrams in a String
Medium
Maximum Length Substring With Two Occurrences
Easy
Count Good Triplets in an Array
Hard
Maximum Number of Tasks You Can Assign
Hard
Wildcard Matching6 Months
Hard
Valid Sudoku
Medium
Circular Permutation in Binary Representation
Medium
First Missing Positive
Hard
The Winner University
Easy
Capacity To Ship Packages Within D Days
Medium
Minimum Operations to Make Array Equal II
Medium
Basic Calculator II
Medium
Maximum Distance Between Unequal Words in Array I
Easy
Find the N-th Value After K Seconds
Medium
Middle of the Linked List
Easy
Number of Ways to Separate Numbers
Hard
Daily Temperatures
Medium
Roman to Integer
Easy
Remove K Digits
Medium
Combination Sum
Medium
Rotting Oranges
Medium
Number of Islands6 Months
Medium
Search in Rotated Sorted Array6 Months
Medium
Maximum Subarray
Medium
Move Zeroes
Easy
Two Sum
Easy
Set Matrix Zeroes
Medium
LFU Cache6 Months
Hard
Container With Most Water6 Months
Medium
Maximum Sum of Distinct Subarrays With Length K
Medium
Longest Common Prefix
Easy
Palindromic Substrings6 Months
Medium
Course Schedule
Medium
Insert Interval
Medium
Sort the Matrix Diagonally
Medium
Longest Common Subsequence
Medium
Word Ladder
Hard
LRU Cache6 Months
Medium
Add Binary
Easy
Trapping Rain Water II
Hard
Edit Distance
Medium
Decode String
Medium
Reconstruct Itinerary6 Months
Hard
Subsets II
Medium
Jump Game
Medium
3Sum
Medium
Design Hit Counter
Medium
Group Anagrams6 Months
Medium
Decode Ways
Medium
Valid Palindrome
Easy
Largest Rectangle in Histogram6 Months
Hard
Sort Colors6 Months
Medium
Merge k Sorted Lists
Hard
Minimum Remove to Make Valid Parentheses
Medium
Construct Binary Tree from Inorder and Postorder Traversal
Medium
Partition Equal Subset Sum
Medium
Median of Two Sorted Arrays
Hard
Diagonal Traverse
Medium
Contiguous Array
Medium
Best Time to Buy and Sell Stock II
Medium
Binary Tree Right Side View
Medium
Flatten Deeply Nested Array
Medium
Best Time to Buy and Sell Stock
Easy
Reverse Nodes in k-Group
Hard
Word Search
Medium
Remove All Adjacent Duplicates in String II
Medium
Top K Frequent Elements
Medium
Find All Duplicates in an Array
Medium
Integer to Roman
Medium
Binary Tree Maximum Path Sum
Hard
The Maze
Medium
Triangle
Medium
Subarray Sum Equals K3 Months
Medium
Rotate Array6 Months
Medium
Find the Winner of the Circular Game
Medium
Boundary of Binary Tree
Medium
Search in Rotated Sorted Array II
Medium
Candy6 Months
Hard
Populating Next Right Pointers in Each Node
Medium
Combination Sum II
Medium
Rising Temperature
Easy
Remove Nth Node From End of List
Medium
Longest Increasing Subsequence
Medium
Find Minimum in Rotated Sorted Array
Medium
Word Break6 Months
Medium
Longest Consecutive Sequence
Medium
Find Peak Element
Medium
First Unique Character in a String6 Months
Easy
Binary Tree Zigzag Level Order Traversal
Medium
Find K Pairs with Smallest Sums
Medium
Subsets
Medium
Number of Distinct Islands
Medium
Relative Sort Array
Easy
Next Greater Element II
Medium
Coin Change
Medium
Kth Largest Element in an Array
Medium
Path Sum II
Medium
Reverse Linked List II
Medium
Sort an Array
Medium
Keys and Rooms
Medium
Perfect Squares
Medium
Distinct Subsequences
Hard
Reverse Integer
Medium
Remove Letter To Equalize Frequency
Easy
Next Greater Element III
Medium
Remove Duplicates from Sorted Array
Easy
Meeting Rooms III
Hard
Number of Islands II
Hard
Degree of an Array
Easy
Sort Characters By Frequency
Medium
Find Median from Data Stream
Hard
Interleaving String
Medium
House Robber3 Months
Medium
Non-decreasing Array
Medium
Nearest Exit from Entrance in Maze
Medium
Count Different Palindromic Subsequences
Hard
Boats to Save People
Medium
Binary Tree Level Order Traversal
Medium
Linked List Cycle
Easy
Search a 2D Matrix
Medium
Flatten Nested List Iterator
Medium
Longest Substring with At Least K Repeating Characters
Medium