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