LinkedIn Interview Questions (180)

Practice real interview problems from LinkedIn

Title	Solution	Practice	Difficulty	Companies	Topics
4. Median of Two Sorted Arrays	Solution	Solve	Hard	Accenture+46	Array Binary Search+1
23. Merge k Sorted Lists	Solution	Solve	Hard	Accenture+52	Divide and Conquer Heap (Priority Queue)+2
32. Longest Valid Parentheses	Solution	Solve	Hard	Accenture+27	Dynamic Programming Stack+1
65. Valid Number	Solution	Solve	Hard	Amazon+6	String
68. Text Justification	Solution	Solve	Hard	Airbnb+39	Array Simulation+1
76. Minimum Window Substring	Solution	Solve	Hard	Adobe+33	Hash Table Sliding Window+1
84. Largest Rectangle in Histogram	Solution	Solve	Hard	Adobe+31	Array Monotonic Stack+1
126. Word Ladder II	Solution	Solve	Hard	Amazon+13	Backtracking Breadth-First Search+2
127. Word Ladder	Solution	Solve	Hard	Adobe+36	Breadth-First Search Hash Table+1
149. Max Points on a Line	Solution	Solve	Hard	Amazon+15	Array Geometry+2
265. Paint House II	Solution	Solve	Hard	LinkedIn+1	Array Dynamic Programming
272. Closest Binary Search Tree Value II	Solution	Solve	Hard	Amazon+2	Binary Search Tree Binary Tree+5
273. Integer to English Words	Solution	Solve	Hard	Amazon+24	Math Recursion+1
282. Expression Add Operators	Solution	Solve	Hard	Amazon+6	Backtracking Math+1
296. Best Meeting Point	Solution	Solve	Hard	Amazon+8	Array Math+2
297. Serialize and Deserialize Binary Tree	Solution	Solve	Hard	Adobe+26	Binary Tree Breadth-First Search+4
381. Insert Delete GetRandom O(1) - Duplicates allowed	Solution	Solve	Hard	Affirm+11	Array Design+3
428. Serialize and Deserialize N-ary Tree	Solution	Solve	Hard	Amazon+4	Breadth-First Search Depth-First Search+2
432. All O`one Data Structure	Solution	Solve	Hard	Airbnb+9	Design Doubly-Linked List+2
460. LFU Cache	Solution	Solve	Hard	Amazon+30	Design Doubly-Linked List+2
489. Robot Room Cleaner	Solution	Solve	Hard	Amazon+7	Backtracking Interactive
632. Smallest Range Covering Elements from K Lists	Solution	Solve	Hard	Amazon+10	Array Greedy+4
716. Max Stack	Solution	Solve	Hard	Amazon+9	Design Doubly-Linked List+3
727. Minimum Window Subsequence	Solution	Solve	Hard	Airbnb+4	Dynamic Programming Sliding Window+1
730. Count Different Palindromic Subsequences	Solution	Solve	Hard	Amazon+4	Dynamic Programming String
827. Making A Large Island	Solution	Solve	Hard	Airbnb+16	Array Breadth-First Search+3
1127. User Purchase Platform	Solution	Solve	Hard	LinkedIn	Database
1473. Paint House III	Solution	Solve	Hard	Google+2	Array Dynamic Programming
1857. Largest Color Value in a Directed Graph	Solution	Solve	Hard	Google+3	Counting Dynamic Programming+4
1944. Number of Visible People in a Queue	Solution	Solve	Hard	Amazon+14	Array Monotonic Stack+1
2040. Kth Smallest Product of Two Sorted Arrays	Solution	Solve	Hard	Amazon+4	Array Binary Search
2276. Count Integers in Intervals	Solution	Solve	Hard	Databricks+3	Design Ordered Set+1
2344. Minimum Deletions to Make Array Divisible	Solution	Solve	Hard	LinkedIn	Array Heap (Priority Queue)+3
2472. Maximum Number of Non-overlapping Palindrome Substrings	Solution	Solve	Hard	LinkedIn+4	Dynamic Programming Greedy+2
2532. Time to Cross a Bridge	Solution	Solve	Hard	LinkedIn	Array Heap (Priority Queue)+1
3113. Find the Number of Subarrays Where Boundary Elements Are Maximum	Solution	Solve	Hard	Amazon+1	Array Binary Search+2
3480. Maximize Subarrays After Removing One Conflicting Pair	Solution	Solve	Hard	Amazon+4