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Adobe DSA Interview Questions

156 curated coding interview questions directly asked in Adobe technical rounds, sorted by frequency with recency and difficulty diagnostics.

⚡ Open Interactive Tracker (156 Problems) 🔥 Must-Solve Problem Pool 🏢 All Companies Directory

156 Total Questions

40 (26%) Easy Problems

95 (61%) Medium Problems

21 (13%) Hard Problems

🔥 Most Tested Topics:

Core DSA (49)Arrays (48)Strings (22)Trees (19)Binary Search (7)

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Showing 156 of 156 displayed

ID	Problem	Difficulty	Topic	Pattern	Acceptance	Frequency	Recency
49	Group Anagrams	Medium	Strings	Hashing / Sliding Window	72.6%	100.0%	3m
146	LRU Cache	Medium	Design	Data Structure Design	47.4%	87.5%	3m
2	Add Two Numbers	Medium	Core DSA	Implementation / Reasoning	48.5%	87.5%	all
3	Longest Substring Without Repeating Characters	Medium	Strings; Trees	Hashing / Sliding Window; DFS / BFS; Sliding Window	39.1%	87.5%	all
4	Median of Two Sorted Arrays	Hard	Arrays; Heap	Sorting / Prefix / Scan; Priority Queue	46.6%	87.5%	all
15	3Sum	Medium	Arrays	Sorting / Prefix / Scan	39.1%	87.5%	all
70	Climbing Stairs	Easy	Dynamic Programming	State Transition	54.1%	87.5%	all
169	Majority Element	Easy	Core DSA	Implementation / Reasoning	66.3%	87.5%	all
195	Tenth Line	Easy	Core DSA	Implementation / Reasoning	36.8%	87.5%	all
206	Reverse Linked List	Easy	Linked List	Two Pointers	80.6%	87.5%	all
237	Delete Node in a Linked List	Medium	Trees; Linked List	DFS / BFS; Two Pointers	83.9%	87.5%	all
258	Add Digits	Easy	Core DSA	Implementation / Reasoning	68.9%	87.5%	all
292	Nim Game	Easy	Core DSA	Implementation / Reasoning	59.8%	87.5%	all
703	Kth Largest Element in a Stream	Easy	Heap	Priority Queue	61.0%	87.5%	all
793	Preimage Size of Factorial Zeroes Function	Hard	Core DSA	Implementation / Reasoning	47.0%	87.5%	all
795	Number of Subarrays with Bounded Maximum	Medium	Arrays	Sorting / Prefix / Scan	55.0%	87.5%	all
908	Smallest Range I	Easy	Core DSA	Implementation / Reasoning	73.6%	87.5%	all
910	Smallest Range II	Medium	Core DSA	Implementation / Reasoning	37.9%	87.5%	all
1190	Reverse Substrings Between Each Pair of Parentheses	Medium	Strings; Trees	Hashing / Sliding Window; DFS / BFS	72.0%	87.5%	all
1916	Count Ways to Build Rooms in an Ant Colony	Hard	Core DSA	Implementation / Reasoning	51.4%	87.5%	all
2055	Plates Between Candles	Medium	Core DSA	Implementation / Reasoning	47.5%	87.5%	all
2143	Choose Numbers From Two Arrays in Range	Hard	Arrays	Sorting / Prefix / Scan	52.8%	87.5%	all
2328	Number of Increasing Paths in a Grid	Hard	Core DSA	Implementation / Reasoning	57.4%	87.5%	all
2406	Divide Intervals Into Minimum Number of Groups	Medium	Arrays	Sorting / Prefix / Scan	63.6%	87.5%	all
2429	Minimize XOR	Medium	Core DSA	Implementation / Reasoning	62.4%	87.5%	all
2422	Merge Operations to Turn Array Into a Palindrome	Medium	Arrays; Strings	Sorting / Prefix / Scan; Hashing / Sliding Window	68.9%	87.5%	all
2892	Minimizing Array After Replacing Pairs With Their Product	Medium	Arrays	Sorting / Prefix / Scan	40.7%	87.5%	all
2962	Count Subarrays Where Max Element Appears at Least K Times	Medium	Arrays	Sorting / Prefix / Scan	62.4%	87.5%	all
3173	Bitwise OR of Adjacent Elements	Easy	Core DSA	Implementation / Reasoning	94.8%	87.5%	all
761	Special Binary String	Hard	Strings	Hashing / Sliding Window	79.3%	87.5%	all
124	Binary Tree Maximum Path Sum	Hard	Arrays; Trees	Sorting / Prefix / Scan; DFS / BFS	42.3%	75.0%	3m
289	Game of Life	Medium	Core DSA	Implementation / Reasoning	72.6%	75.0%	3m
56	Merge Intervals	Medium	Arrays	Sorting / Prefix / Scan	51.8%	75.0%	6m
5	Longest Palindromic Substring	Medium	Strings; Trees	Hashing / Sliding Window; DFS / BFS	37.8%	75.0%	6m
1	Two Sum	Easy	Arrays	Sorting / Prefix / Scan; Two Pointers	57.5%	75.0%	6m
392	Is Subsequence	Easy	Core DSA	Implementation / Reasoning	49.0%	75.0%	6m
475	Heaters	Medium	Core DSA	Implementation / Reasoning	41.9%	75.0%	6m
1482	Minimum Number of Days to Make m Bouquets	Medium	Arrays	Sorting / Prefix / Scan	56.6%	75.0%	6m
227	Basic Calculator II	Medium	Stack / Queue	Monotonic Stack / Simulation	46.9%	75.0%	6m
875	Koko Eating Bananas	Medium	Binary Search	Binary Search	50.0%	75.0%	6m
12	Integer to Roman	Medium	Strings	Hashing / Sliding Window	71.0%	75.0%	all
14	Longest Common Prefix	Easy	Core DSA	Implementation / Reasoning	47.6%	75.0%	all
31	Next Permutation	Medium	Backtracking	Backtracking	45.3%	75.0%	all
55	Jump Game	Medium	Greedy	Greedy	40.9%	75.0%	all
76	Minimum Window Substring	Hard	Arrays; Strings; Trees	Sorting / Prefix / Scan; Hashing / Sliding Window; DFS / BFS; Sliding Window	47.5%	75.0%	all
121	Best Time to Buy and Sell Stock	Easy	Core DSA	Implementation / Reasoning	56.8%	75.0%	all
200	Number of Islands	Medium	Graphs	BFS / DFS / Topological Sort	64.4%	75.0%	all
3636	Threshold Majority Queries	Hard	Core DSA	Implementation / Reasoning	21.9%	75.0%	all
468	Validate IP Address	Medium	Strings	Hashing / Sliding Window	28.3%	75.0%	all
3736	Minimum Moves to Equal Array Elements III	Easy	Arrays	Sorting / Prefix / Scan	81.8%	75.0%	all
8	String to Integer (atoi)	Medium	Strings	Hashing / Sliding Window	21.0%	62.5%	all
13	Roman to Integer	Easy	Strings	Hashing / Sliding Window	66.6%	62.5%	all
20	Valid Parentheses	Easy	Strings	Hashing / Sliding Window	44.2%	62.5%	all
42	Trapping Rain Water	Hard	Core DSA	Two Pointers	67.4%	62.5%	all
54	Spiral Matrix	Medium	Arrays	Sorting / Prefix / Scan	56.8%	62.5%	all
74	Search a 2D Matrix	Medium	Arrays; Binary Search	Sorting / Prefix / Scan; Binary Search	53.9%	62.5%	all
93	Restore IP Addresses	Medium	Core DSA	Implementation / Reasoning	56.0%	62.5%	all
103	Binary Tree Zigzag Level Order Traversal	Medium	Trees	DFS / BFS	63.7%	62.5%	all
128	Longest Consecutive Sequence	Medium	Core DSA	Implementation / Reasoning	47.1%	62.5%	all
134	Gas Station	Medium	Greedy	Greedy	48.0%	62.5%	all
152	Maximum Product Subarray	Medium	Arrays	Sorting / Prefix / Scan	36.4%	62.5%	all
179	Largest Number	Medium	Core DSA	Implementation / Reasoning	43.1%	62.5%	all
236	Lowest Common Ancestor of a Binary Tree	Medium	Trees	DFS / BFS	69.3%	62.5%	all
239	Sliding Window Maximum	Hard	Arrays	Sorting / Prefix / Scan; Sliding Window	48.8%	62.5%	all
322	Coin Change	Medium	Dynamic Programming	State Transition	48.4%	62.5%	all
347	Top K Frequent Elements	Medium	Heap	Priority Queue	66.4%	62.5%	all
402	Remove K Digits	Medium	Core DSA	Implementation / Reasoning	36.9%	62.5%	all
547	Number of Provinces	Medium	Core DSA	Implementation / Reasoning	70.4%	62.5%	all
904	Fruit Into Baskets	Medium	Core DSA	Implementation / Reasoning	51.1%	62.5%	all
994	Rotting Oranges	Medium	Core DSA	Implementation / Reasoning	58.7%	62.5%	all
2895	Minimum Processing Time	Medium	Arrays	Sorting / Prefix / Scan	70.3%	62.5%	all
2506	Count Pairs Of Similar Strings	Easy	Strings	Hashing / Sliding Window	73.7%	62.5%	all
692	Top K Frequent Words	Medium	Strings; Heap	Hashing / Sliding Window; Priority Queue	60.2%	62.5%	all
1293	Shortest Path in a Grid with Obstacles Elimination	Hard	Trees	DFS / BFS	46.3%	62.5%	all
1636	Sort Array by Increasing Frequency	Easy	Arrays	Sorting / Prefix / Scan	80.8%	62.5%	all
7	Reverse Integer	Medium	Core DSA	Implementation / Reasoning	31.9%	50.0%	all
22	Generate Parentheses	Medium	Strings	Hashing / Sliding Window	78.7%	50.0%	all
27	Remove Element	Easy	Core DSA	Implementation / Reasoning	61.8%	50.0%	all
33	Search in Rotated Sorted Array	Medium	Arrays; Binary Search	Sorting / Prefix / Scan; Binary Search	44.9%	50.0%	all
45	Jump Game II	Medium	Greedy	Greedy	42.9%	50.0%	all
48	Rotate Image	Medium	Arrays	Sorting / Prefix / Scan	80.1%	50.0%	all
51	N-Queens	Hard	Backtracking	Backtracking	75.5%	50.0%	all
102	Binary Tree Level Order Traversal	Medium	Trees	DFS / BFS	72.7%	50.0%	all
105	Construct Binary Tree from Preorder and Inorder Traversal	Medium	Trees	DFS / BFS	68.8%	50.0%	all
198	House Robber	Medium	Dynamic Programming	State Transition	53.2%	50.0%	all
215	Kth Largest Element in an Array	Medium	Arrays; Heap	Sorting / Prefix / Scan; Priority Queue	68.9%	50.0%	all
238	Product of Array Except Self	Medium	Arrays	Sorting / Prefix / Scan	68.9%	50.0%	all
253	Meeting Rooms II	Medium	Greedy	Greedy	52.7%	50.0%	all
283	Move Zeroes	Easy	Core DSA	Two Pointers	63.8%	50.0%	all
417	Pacific Atlantic Water Flow	Medium	Core DSA	Implementation / Reasoning	61.0%	50.0%	all
528	Random Pick with Weight	Medium	Core DSA	Implementation / Reasoning	49.1%	50.0%	all
1863	Sum of All Subset XOR Totals	Easy	Arrays	Sorting / Prefix / Scan	90.1%	50.0%	all
2385	Amount of Time for Binary Tree to Be Infected	Medium	Trees	DFS / BFS	65.4%	50.0%	all
638	Shopping Offers	Medium	Core DSA	Implementation / Reasoning	52.5%	50.0%	all
329	Longest Increasing Path in a Matrix	Hard	Arrays; Dynamic Programming	Sorting / Prefix / Scan; State Transition	56.6%	50.0%	all
3528	Unit Conversion I	Medium	Core DSA	Implementation / Reasoning	54.1%	50.0%	all
339	Nested List Weight Sum	Medium	Arrays; Linked List	Sorting / Prefix / Scan; Two Pointers	86.0%	50.0%	all
219	Contains Duplicate II	Easy	Arrays	Sorting / Prefix / Scan	51.3%	50.0%	all
11	Container With Most Water	Medium	Core DSA	Two Pointers	60.0%	37.5%	all
25	Reverse Nodes in k-Group	Hard	Trees; Linked List	DFS / BFS; Two Pointers	66.1%	37.5%	all
40	Combination Sum II	Medium	Arrays; Backtracking	Sorting / Prefix / Scan; Backtracking	59.5%	37.5%	all
50	Pow(x, n)	Medium	Core DSA	Implementation / Reasoning	38.7%	37.5%	all
69	Sqrt(x)	Easy	Binary Search	Binary Search	41.8%	37.5%	all
75	Sort Colors	Medium	Arrays	Sorting / Prefix / Scan	69.6%	37.5%	all
83	Remove Duplicates from Sorted List	Easy	Arrays; Linked List	Sorting / Prefix / Scan; Two Pointers	56.7%	37.5%	all
84	Largest Rectangle in Histogram	Hard	Core DSA	Implementation / Reasoning	49.9%	37.5%	all
91	Decode Ways	Medium	Dynamic Programming	State Transition	38.0%	37.5%	all
125	Valid Palindrome	Easy	Strings	Hashing / Sliding Window	53.3%	37.5%	all
127	Word Ladder	Hard	Strings	Hashing / Sliding Window	45.6%	37.5%	all
130	Surrounded Regions	Medium	Core DSA	Implementation / Reasoning	45.3%	37.5%	all
136	Single Number	Easy	Core DSA	Implementation / Reasoning	77.7%	37.5%	all
155	Min Stack	Medium	Stack / Queue	Monotonic Stack / Simulation	58.2%	37.5%	all
167	Two Sum II - Input Array Is Sorted	Medium	Arrays	Sorting / Prefix / Scan; Two Pointers	65.1%	37.5%	all
173	Binary Search Tree Iterator	Medium	Trees; Binary Search; Design	DFS / BFS; Binary Search; Data Structure Design	76.5%	37.5%	all
207	Course Schedule	Medium	Graphs	BFS / DFS / Topological Sort	51.4%	37.5%	all
208	Implement Trie (Prefix Tree)	Medium	Trees	DFS / BFS	69.5%	37.5%	all
217	Contains Duplicate	Easy	Arrays	Sorting / Prefix / Scan	64.4%	37.5%	all
268	Missing Number	Easy	Arrays	Sorting / Prefix / Scan	72.0%	37.5%	all
387	First Unique Character in a String	Easy	Strings	Hashing / Sliding Window	65.5%	37.5%	all
394	Decode String	Medium	Strings; Dynamic Programming; Stack / Queue	Hashing / Sliding Window; State Transition; Monotonic Stack / Simulation	62.6%	37.5%	all
424	Longest Repeating Character Replacement	Medium	Strings	Hashing / Sliding Window	59.7%	37.5%	all
540	Single Element in a Sorted Array	Medium	Arrays	Sorting / Prefix / Scan	59.3%	37.5%	all
542	01 Matrix	Medium	Arrays	Sorting / Prefix / Scan	53.9%	37.5%	all
556	Next Greater Element III	Medium	Stack / Queue	Monotonic Stack / Simulation	35.3%	37.5%	all
560	Subarray Sum Equals K	Medium	Arrays	Sorting / Prefix / Scan	47.3%	37.5%	all
567	Permutation in String	Medium	Strings; Backtracking	Hashing / Sliding Window; Sliding Window; Backtracking	48.9%	37.5%	all
584	Find Customer Referee	Easy	Core DSA	Implementation / Reasoning	72.9%	37.5%	all
864	Shortest Path to Get All Keys	Hard	Core DSA	Implementation / Reasoning	54.6%	37.5%	all
977	Squares of a Sorted Array	Easy	Arrays	Sorting / Prefix / Scan	73.8%	37.5%	all
993	Cousins in Binary Tree	Easy	Trees	DFS / BFS	59.3%	37.5%	all
1268	Search Suggestions System	Medium	Binary Search	Binary Search	65.2%	37.5%	all
1581	Customer Who Visited but Did Not Make Any Transactions	Easy	Core DSA	Implementation / Reasoning	67.7%	37.5%	all
2704	To Be Or Not To Be	Easy	Core DSA	Implementation / Reasoning	63.4%	37.5%	all
2134	Minimum Swaps to Group All 1's Together II	Medium	Arrays	Sorting / Prefix / Scan	65.6%	37.5%	all
224	Basic Calculator	Hard	Stack / Queue	Monotonic Stack / Simulation	46.9%	37.5%	all
307	Range Sum Query - Mutable	Medium	Arrays	Sorting / Prefix / Scan	43.1%	37.5%	all
525	Contiguous Array	Medium	Arrays	Sorting / Prefix / Scan	51.3%	37.5%	all
3046	Split the Array	Easy	Arrays	Sorting / Prefix / Scan	61.3%	37.5%	all
355	Design Twitter	Medium	Design	Data Structure Design	44.7%	37.5%	all
2536	Increment Submatrices by One	Medium	Core DSA	Implementation / Reasoning	73.8%	37.5%	all
1004	Max Consecutive Ones III	Medium	Core DSA	Implementation / Reasoning	67.7%	37.5%	all
222	Count Complete Tree Nodes	Easy	Trees	DFS / BFS	72.6%	37.5%	all
669	Trim a Binary Search Tree	Medium	Trees; Binary Search	DFS / BFS; Binary Search	66.7%	37.5%	all
2275	Largest Combination With Bitwise AND Greater Than Zero	Medium	Backtracking	Backtracking	80.8%	37.5%	all
545	Boundary of Binary Tree	Medium	Trees	DFS / BFS	48.1%	37.5%	all
1507	Reformat Date	Easy	Core DSA	Implementation / Reasoning	68.5%	37.5%	all
1963	Minimum Number of Swaps to Make the String Balanced	Medium	Arrays; Strings	Sorting / Prefix / Scan; Hashing / Sliding Window	78.0%	37.5%	all
2291	Maximum Profit From Trading Stocks	Medium	Arrays	Sorting / Prefix / Scan	48.2%	37.5%	all
338	Counting Bits	Easy	Core DSA	Implementation / Reasoning	80.6%	37.5%	all
332	Reconstruct Itinerary	Hard	Core DSA	Implementation / Reasoning	44.6%	37.5%	all
2215	Find the Difference of Two Arrays	Easy	Arrays	Sorting / Prefix / Scan	81.4%	37.5%	all
67	Add Binary	Easy	Core DSA	Implementation / Reasoning	58.1%	37.5%	all
983	Minimum Cost For Tickets	Medium	Arrays	Sorting / Prefix / Scan	67.4%	37.5%	all
59	Spiral Matrix II	Medium	Arrays	Sorting / Prefix / Scan	75.1%	37.5%	all
341	Flatten Nested List Iterator	Medium	Linked List; Design	Two Pointers; Data Structure Design	65.7%	37.5%	all
1326	Minimum Number of Taps to Open to Water a Garden	Hard	Arrays	Sorting / Prefix / Scan	51.0%	37.5%	all

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