Dashboard Questions Topics Companies Sheets

LinkedIn Interview Questions

120 coding problems asked in LinkedIn interviews. Prepare for your technical interview with real questions.

120

Problems

Easy

Medium

Hard

Difficulty

All120 Easy22 Medium73 Hard25

Title	Solve	Difficulty	Companies	Topics
4. Median of Two Sorted Arrays	Solve	Hard	Accolite+38	Array Binary Search+1
18. 4Sum	Solve	Medium	Adobe+8	Array Sorting+1
20. Valid Parentheses	Solve	Easy	Adobe+25	Stack String
23. Merge k Sorted Lists	Solve	Hard	Adobe+17	Divide and Conquer Heap (Priority Queue)+2
26. Remove Duplicates from Sorted Array	Solve	Easy	Adobe+8	Array Two Pointers
31. Next Permutation	Solve	Medium	Adobe+19	Array Two Pointers
33. Search in Rotated Sorted Array	Solve	Medium	Accenture+91	Array Binary Search
34. Find First and Last Position of Element in Sorted Array	Solve	Medium	Adobe+18	Array Binary Search
39. Combination Sum	Solve	Medium	Adobe+8	Array Backtracking
46. Permutations	Solve	Medium	Accenture+39	Array Backtracking
50. Pow(x, n)	Solve	Medium	Adobe+29	Math Recursion
53. Maximum Subarray	Solve	Medium	Adobe+22	Array Divide and Conquer+1
56. Merge Intervals	Solve	Medium	Adobe+24	Array Sorting
57. Insert Interval	Solve	Medium	Amazon+4	Array
62. Unique Paths	Solve	Medium	Accoloite+41	Combinatorics Dynamic Programming+1
65. Valid Number	Solve	Hard	Facebook+1	String
68. Text Justification	Solve	Hard	Adobe+25	Array Simulation+1
69. Sqrt(x)	Solve	Easy	Adobe+6	Binary Search Math
72. Edit Distance	Solve	Medium	Amazon+7	Dynamic Programming String
76. Minimum Window Substring	Solve	Hard	Adobe+9	Hash Table Sliding Window+1
81. Search in Rotated Sorted Array II	Solve	Medium	Adobe+4	Array Binary Search
88. Merge Sorted Array	Solve	Easy	Amazon+9	Array Sorting+1
100. Same Tree	Solve	Easy	Amazon+5	Binary Tree Breadth-First Search+2
101. Symmetric Tree	Solve	Easy	Adobe+7	Binary Tree Breadth-First Search+2
102. Binary Tree Level Order Traversal	Solve	Medium	Amazon+8	Binary Tree Breadth-First Search+1
103. Binary Tree Zigzag Level Order Traversal	Solve	Medium	Adobe+8	Binary Tree Breadth-First Search+1
104. Maximum Depth of Binary Tree	Solve	Easy	Amazon+7	Binary Tree Breadth-First Search+2
127. Word Ladder	Solve	Hard	Adobe+8	Breadth-First Search Hash Table+1
146. LRU Cache	Solve	Medium	Accolite+56	Design Doubly-Linked List+2
149. Max Points on a Line	Solve	Hard	Amazon+4	Array Geometry+2
150. Evaluate Reverse Polish Notation	Solve	Medium	Amazon+6	Array Math+1
151. Reverse Words in a String	Solve	Medium	Amazon+5	String Two Pointers
152. Maximum Product Subarray	Solve	Medium	Adobe+6	Array Dynamic Programming
156. Binary Tree Upside Down	Solve	Medium	LinkedIn	Binary Tree Depth-First Search+1
160. Intersection of Two Linked Lists	Solve	Easy	Adobe+7	Hash Table Linked List+1
170. Two Sum III - Data structure design	Solve	Easy	LinkedIn	Array Data Stream+3
187. Repeated DNA Sequences	Solve	Medium	Amazon+1	Bit Manipulation Hash Function+4
200. Number of Islands	Solve	Medium	Adobe+40	Array Breadth-First Search+3
205. Isomorphic Strings	Solve	Easy	Amazon+2	Hash Table String
215. Kth Largest Element in an Array	Solve	Medium	ABCO+44	Array Divide and Conquer+3
225. Implement Stack using Queues	Solve	Easy	Accenture+54	Design Queue+1
230. Kth Smallest Element in a BST	Solve	Medium	Amazon+4	Binary Search Tree Binary Tree+2
235. Lowest Common Ancestor of a Binary Search Tree	Solve	Medium	Amazon+5	Binary Search Tree Binary Tree+2
236. Lowest Common Ancestor of a Binary Tree	Solve	Medium	Amazon+9	Binary Tree Depth-First Search+1
239. Sliding Window Maximum	Solve	Hard	Accion Labs India+66	Array Heap (Priority Queue)+3
243. Shortest Word Distance	Solve	Easy	Amazon+4	Array String
244. Shortest Word Distance II	Solve	Medium	LinkedIn	Array Design+3
245. Shortest Word Distance III	Solve	Medium	Amazon+1	Array String
254. Factor Combinations	Solve	Medium	LinkedIn	Backtracking
256. Paint House	Solve	Medium	Amazon+2	Array Dynamic Programming