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Linkedin Master DSA Sheet

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

top-specificlinkedin-prep
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180
Course Schedule II3 Months
Medium
Smallest Range Covering Elements from K Lists6 Months
Hard
Valid Parentheses3 Months
Easy
Min Stack
Medium
Process Tasks Using Servers
Medium
Max Stack30 Days
Hard
Best Meeting Point6 Months
Hard
Word Ladder II
Hard
Insert Delete GetRandom O(1) - Duplicates allowed30 Days
Hard
Number of Connected Components in an Undirected Graph6 Months
Medium
Design Authentication Manager
Medium
Graph Valid Tree6 Months
Medium
Open the Lock
Medium
Design HashMap
Easy
Building H2O
Medium
Shortest Word Distance
Easy
K Closest Points to Origin
Medium
Longest Palindromic Substring
Medium
Maximum Number of Non-overlapping Palindrome Substrings
Hard
Find K Closest Elements
Medium
Longest String Chain
Medium
Pow(x, n)6 Months
Medium
Koko Eating Bananas
Medium
Serialize and Deserialize Binary Tree6 Months
Hard
Maximum Depth of Binary Tree3 Months
Easy
Diameter of Binary Tree
Easy
Kth Smallest Element in a BST
Medium
Longest Substring Without Repeating Characters
Medium
Merge Intervals6 Months
Medium
Product of Array Except Self
Medium
Maximum Product Subarray3 Months
Medium
Minimum Knight Moves
Medium
Paint House III
Hard
Task Scheduler
Medium
Binary Tree Upside Down3 Months
Medium
Number of Visible People in a Queue
Hard
House Robber III
Medium
Sqrt(x)
Easy
Stock Price Fluctuation
Medium
Minimum Window Substring3 Months
Hard
Valid Sudoku
Medium
Random Pick with Weight30 Days
Medium
Merge Two Binary Trees3 Months
Easy
Roman to Integer
Easy
Longest Valid Parentheses
Hard
Search in Rotated Sorted Array6 Months
Medium
Making A Large Island6 Months
Hard
Merge Sorted Array
Easy
Permutations6 Months
Medium
Number of Islands6 Months
Medium
Partition to K Equal Sum Subsets3 Months
Medium
Robot Bounded In Circle
Medium
Combination Sum
Medium
Two Sum
Easy
Sort Transformed Array3 Months
Medium
LFU Cache3 Months
Hard
Shortest Word Distance III
Medium
Insert Delete GetRandom O(1)30 Days
Medium
Max Points on a Line30 Days
Hard
Maximum Subarray30 Days
Medium
Valid Perfect Square
Easy
Course Schedule6 Months
Medium
Find the Index of the First Occurrence in a String
Easy
Valid Number
Hard
Exclusive Time of Functions3 Months
Medium
Palindromic Substrings
Medium
Insert Interval6 Months
Medium
Word Ladder3 Months
Hard
Closest Binary Search Tree Value II30 Days
Hard
All O`one Data Structure3 Months
Hard
Edit Distance6 Months
Medium
Intersection of Two Linked Lists6 Months
Easy
LRU Cache3 Months
Medium
Shuffle an Array
Medium
Reverse Words in a String6 Months
Medium
Number of Divisible Triplet Sums
Medium
Isomorphic Strings6 Months
Easy
Sum of All Odd Length Subarrays
Easy
Word Search
Medium
Design Add and Search Words Data Structure
Medium
Evaluate Division
Medium
Maximize Total Tastiness of Purchased Fruits
Medium
User Purchase Platform
Hard
Max Consecutive Ones III30 Days
Medium
Factor Combinations
Medium
Minimum Deletions to Make Array Divisible
Hard
Delete Node in a BST
Medium
New Users Daily Count
Medium
Time to Cross a Bridge
Hard
Integer to Roman
Medium
Create Binary Tree From Descriptions
Medium
Reorder List
Medium
Permutations II
Medium
Symmetric Tree6 Months
Easy
Article Views II
Medium
Median of Two Sorted Arrays
Hard
Sum of Square Numbers
Medium
Letter Combinations of a Phone Number30 Days
Medium
Largest Rectangle in Histogram3 Months
Hard
Partition Equal Subset Sum
Medium
Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold
Medium
Subarray Sum Equals K
Medium
Shortest Word Distance II3 Months
Medium
Validate Stack Sequences
Medium
Two Sum III - Data structure design
Easy
Merge k Sorted Lists
Hard
Merge Two Sorted Lists
Easy
The Maze
Medium
Same Tree
Easy
Best Time to Buy and Sell Stock
Easy
Lowest Common Ancestor of a Binary Tree6 Months
Medium
Find First and Last Position of Element in Sorted Array3 Months
Medium
Text Justification
Hard
Lowest Common Ancestor of a Binary Search Tree6 Months
Medium
Cinema Seat Allocation6 Months
Medium
Combination Sum II
Medium
Longest Palindromic Subsequence30 Days
Medium
Integer to English Words
Hard
Binary Tree Zigzag Level Order Traversal
Medium
House Robber II
Medium
Long Pressed Name
Easy
Can Place Flowers3 Months
Easy
Word Break
Medium
Reverse Integer
Medium
Max Area of Island
Medium
Expression Add Operators
Hard
Is Graph Bipartite?
Medium
4Sum
Medium
Dot Product of Two Sparse Vectors
Medium
Find Minimum in Rotated Sorted Array
Medium
Find Leaves of Binary Tree3 Months
Medium
Article Views I
Easy
Find K Pairs with Smallest Sums
Medium
Longest Consecutive Sequence
Medium
Kth Largest Element in an Array3 Months
Medium
Unique Paths
Medium
Design Bounded Blocking Queue3 Months
Medium
Validate Binary Search Tree
Medium
01 Matrix
Medium
Count Different Palindromic Subsequences
Hard
House Robber
Medium
Serialize and Deserialize N-ary Tree
Hard
H-Index
Medium
Find the Number of Subarrays Where Boundary Elements Are Maximum
Hard
Paint House II
Hard
House Robber IV
Medium
Possible Bipartition6 Months
Medium
Lowest Common Ancestor of a Binary Tree III
Medium
Valid Parenthesis String
Medium
Paint House30 Days
Medium
Minimum Add to Make Parentheses Valid
Medium
Kth Smallest Product of Two Sorted Arrays
Hard
Evaluate Reverse Polish Notation
Medium
Flatten Nested List Iterator
Medium
Robot Room Cleaner6 Months
Hard
Bulb Switcher30 Days
Medium
Binary Tree Level Order Traversal
Medium
Partition Labels
Medium
Can I Win
Medium
Closest Leaf in a Binary Tree
Medium
Repeated DNA Sequences6 Months
Medium
Count Integers in Intervals
Hard
Binary Search Tree Iterator
Medium
Implement Rand10() Using Rand7()
Medium
Nested List Weight Sum30 Days
Medium
Sparse Matrix Multiplication
Medium
Rotate List3 Months
Medium
Valid Triangle Number
Medium
Accounts Merge6 Months
Medium
Invert Binary Tree
Easy
Find the Celebrity3 Months
Medium
Lowest Common Ancestor of a Binary Tree II6 Months
Medium
Largest Color Value in a Directed Graph
Hard
Maximize Subarrays After Removing One Conflicting Pair
Hard
Nested List Weight Sum II3 Months
Medium
Minimum Window Subsequence
Hard
Find Largest Value in Each Tree Row
Medium
Flatten a Multilevel Doubly Linked List
Medium
Find Smallest Letter Greater Than Target6 Months
Easy
Second Minimum Node In a Binary Tree6 Months
Easy