Dashboard Questions Topics Companies Sheets

Uber Interview Questions

261 coding problems asked in Uber interviews. Prepare for your technical interview with real questions.

261

Problems

Easy

133

Medium

Hard

Difficulty

All261 Easy56 Medium133 Hard72

Title	Solve	Difficulty	Companies	Topics
1. Two Sum	Solve	Easy	Accenture+29	Array Hash Table
2. Add Two Numbers	Solve	Medium	Adobe+14	Linked List Math+1
3. Longest Substring Without Repeating Characters	Solve	Medium	Adobe+20	Hash Table Sliding Window+1
9. Palindrome Number	Solve	Easy	Accenture+8	Math
10. Regular Expression Matching	Solve	Hard	Adobe+8	Dynamic Programming Recursion+1
13. Roman to Integer	Solve	Easy	Accenture+18	Hash Table Math+1
14. Longest Common Prefix	Solve	Easy	Adobe+9	String Trie
15. 3Sum	Solve	Medium	Adobe+21	Array Sorting+1
17. Letter Combinations of a Phone Number	Solve	Medium	Airtel+34	Backtracking Hash Table+1
19. Remove Nth Node From End of List	Solve	Medium	Amazon+7	Linked List Two Pointers
20. Valid Parentheses	Solve	Easy	Adobe+25	Stack String
21. Merge Two Sorted Lists	Solve	Easy	Accenture+9	Linked List Recursion
22. Generate Parentheses	Solve	Medium	Adobe+12	Backtracking Dynamic Programming+1
31. Next Permutation	Solve	Medium	Adobe+19	Array Two Pointers
34. Find First and Last Position of Element in Sorted Array	Solve	Medium	Adobe+18	Array Binary Search
35. Search Insert Position	Solve	Easy	Adobe+8	Array Binary Search
36. Valid Sudoku	Solve	Medium	Amazon+9	Array Hash Table+1
37. Sudoku Solver	Solve	Hard	Adobe+11	Array Backtracking+2
42. Trapping Rain Water	Solve	Hard	Adobe+21	Array Dynamic Programming+3
44. Wildcard Matching	Solve	Hard	Amazon+5	Dynamic Programming Greedy+2
46. Permutations	Solve	Medium	Accenture+39	Array Backtracking
48. Rotate Image	Solve	Medium	Adobe+9	Array Math+1
49. Group Anagrams	Solve	Medium	Adobe+23	Array Hash Table+2
50. Pow(x, n)	Solve	Medium	Adobe+29	Math Recursion
53. Maximum Subarray	Solve	Medium	Adobe+22	Array Divide and Conquer+1
54. Spiral Matrix	Solve	Medium	Accenture+21	Array Matrix+1
56. Merge Intervals	Solve	Medium	Adobe+24	Array Sorting
62. Unique Paths	Solve	Medium	Accoloite+41	Combinatorics Dynamic Programming+1
64. Minimum Path Sum	Solve	Medium	Amazon+8	Array Dynamic Programming+1
67. Add Binary	Solve	Easy	Adobe+5	Bit Manipulation Math+2
68. Text Justification	Solve	Hard	Adobe+25	Array Simulation+1
70. Climbing Stairs	Solve	Easy	Adobe+8	Dynamic Programming Math+1
74. Search a 2D Matrix	Solve	Medium	Accenture+23	Array Binary Search+1
75. Sort Colors	Solve	Medium	Adobe+9	Array Sorting+1
78. Subsets	Solve	Medium	Adobe+9	Array Backtracking+1
79. Word Search	Solve	Medium	Amazon+8	Array Backtracking+2
84. Largest Rectangle in Histogram	Solve	Hard	Adobe+7	Array Monotonic Stack+1
88. Merge Sorted Array	Solve	Easy	Amazon+9	Array Sorting+1
95. Unique Binary Search Trees II	Solve	Medium	Adobe+14	Backtracking Binary Search Tree+3
97. Interleaving String	Solve	Medium	Amazon+23	Dynamic Programming String
101. Symmetric Tree	Solve	Easy	Adobe+7	Binary Tree Breadth-First Search+2
105. Construct Binary Tree from Preorder and Inorder Traversal	Solve	Medium	Amazon+5	Array Binary Tree+3
118. Pascal's Triangle	Solve	Easy	Adobe+17	Array Dynamic Programming
121. Best Time to Buy and Sell Stock	Solve	Easy	Adobe+30	Array Dynamic Programming
123. Best Time to Buy and Sell Stock III	Solve	Hard	Amazon+2	Array Dynamic Programming
130. Surrounded Regions	Solve	Medium	Bloomberg+3	Array Breadth-First Search+3
134. Gas Station	Solve	Medium	Adobe+8	Array Greedy
135. Candy	Solve	Hard	Adobe+21	Array Greedy
136. Single Number	Solve	Easy	Adobe+8	Array Bit Manipulation
139. Word Break	Solve	Medium	Accenture+38	Array Dynamic Programming+4