Adobe Coding Interview Questions: 204 Tagged Problems

204 coding problems tagged Adobe — 113 easy · 84 medium · 7 hard — with solutions in 13 languages. Plus a 4-week study plan by topic.

Problems: 204
By difficulty: 113 easy · 84 medium · 7 hard
Languages: JavaScript, TypeScript, Python, Java, C++, C, C#, Go, Kotlin, Swift, Rust, PHP and Ruby
Cost: Free on every plan; sign in to run and submit

204 problems the CodeKairo catalogue tags as commonly asked in Adobe's coding rounds — 113 easy, 84 medium and 7 hard — each judged by hidden tests in 13 languages. The most common topics among them are Arrays (112), Strings (59) and Math (56). CodeKairo's Adobe — Campus Aptitude mock covers the Adobe campus aptitude pattern: three equal sections of twenty questions, twenty minutes each, where the only difficulty in the format is the pace. The tag is the catalogue's own annotation of where a problem tends to come up — not a list published by Adobe, which CodeKairo is not affiliated with.

Adobe study plan by topic

40 of the 204 problems tagged Adobe over 4 weeks, about 16 h 50 min of solving, grouped by technique in the order they build on each other — Arrays, Strings, Hash Table and Counting and 19 more. It ends with the Adobe — Campus Aptitude mock.

Week 1: Arrays, Strings, Hash Table +3

12 problems on Arrays, Strings, Hash Table, Counting, Math and Two Pointers, easiest first within each topic.

Week 2: Sliding Window, Prefix Sum, Sorting +4

10 problems on Sliding Window, Prefix Sum, Sorting, Counting Sort, Binary Search, Stack and Matrix, easiest first within each topic.

Maximum Number of Vowels in a Substring of Given Length Medium
Find Pivot Index Easy
Can Make Arithmetic Progression From Sequence Easy
Maximum Product Difference Between Two Pairs Easy
How Many Numbers Are Smaller Than the Current Number Easy
Sum of Square Numbers Medium
Baseball Game Easy
Maximum Nesting Depth of the Parentheses Easy
Image Smoother Easy
Unique Paths II Medium

Week 3: Simulation, Enumeration, Greedy +3

12 problems on Simulation, Enumeration, Greedy, Heap, Bit Manipulation and Number Theory, easiest first within each topic.

Create Target Array in the Given Order Easy
Apply Operations to an Array Easy
Spiral Matrix II Medium
Count Good Triplets Easy
Maximum 69 Number Easy
Can Place Flowers Easy
Integer to Roman Medium
Ugly Number II Medium
Hamming Distance Easy
Add Binary Easy
Number of Steps to Reduce a Number to Zero Easy
Add Digits Easy

Week 4: Combinatorics, Trie, Dynamic Programming +1

6 problems on Combinatorics, Trie, Dynamic Programming and Brainteaser, easiest first within each topic.

Finally: the timed test

Sit the Adobe — Campus Aptitude mock under the clock — the coding problems are only one part of the round.

Take the Adobe — Campus Aptitude mock

Adobe test patterns

Adobe — Campus Aptitude pattern guide and timed mock

All problems tagged Adobe

Easy (113)

Prime In Diagonal Array, Math, Matrix
Matrix Similarity After Cyclic Shifts Array, Matrix, Simulation
Maximum Difference by Remapping a Digit Math, Greedy
Alternating Digit Sum Math
Best Poker Hand Array, Hash Table, Counting
Maximum Height of a Triangle Array, Greedy, Enumeration
Substrings of Size Three with Distinct Characters String, Hash Table, Sliding Window
Find the K-Beauty of a Number Math, String, Sliding Window
Find Indices With Index and Value Difference I Array, Two Pointers
DI String Match Array, Two Pointers, Greedy
Binary Watch Bit Manipulation, Backtracking, Enumeration
Shortest Subarray With OR at Least K I Bit Manipulation, Array, Sliding Window
Maximum Strong Pair XOR I Bit Manipulation, Array, Trie
Find the Maximum Divisibility Score Array, Math, Counting
Number of Lines To Write String Array, String, Simulation
Most Common Word String, Hash Table
Sum of Values at Indices With K Set Bits Array, Bit Manipulation
Largest Positive Integer That Exists With Its Negative Array, Hash Table, Two Pointers
N-Repeated Element in Size 2N Array Array, Hash Table
Find Common Characters Array, String, Hash Table
Minimum Right Shifts to Sort the Array Array
Count Tested Devices After Test Operations Array, Simulation, Counting
Furthest Point From Origin String, Greedy
Largest Odd Number in String String, Math, Greedy
Sum of Digits of String After Convert String, Simulation
Minimum Sum of Four Digit Number After Splitting Digits Math, Greedy, Sorting
Split Strings by Separator Array, String
Odd String Difference Array, String, Hash Table
Minimum Number of Operations to Convert Time String, Greedy
Capitalize the Title String
Redistribute Characters to Make All Strings Equal Array, String, Counting
Determine Color of a Chessboard Square Math, String
Maximum Repeating Substring String
Count Substrings with Only One Distinct Letter String, Math
Goat Latin String
Reverse Only Letters String, Two Pointers
Count Operations to Obtain Zero Math, Simulation
Count Largest Group Math, Hash Table
Find N Unique Integers Sum up to Zero Array, Math
Count Odd Numbers in an Interval Range Math
Water Bottles Math, Simulation
Sum of All Subset XOR Totals Array, Math, Backtracking
Count the Number of Consistent Strings Array, Hash Table, String
Minimum Bit Flips to Convert Number Bit Manipulation
Binary Number with Alternating Bits Bit Manipulation
Decode XORed Array Array, Bit Manipulation
XOR Operation in an Array Math, Bit Manipulation, Simulation
Nim Game Math, Brainteaser, Game Theory
Base 7 Math
Convert a Number to Hexadecimal Math, Bit Manipulation
Prime Number of Set Bits in Binary Representation Math, Bit Manipulation
Number Complement Bit Manipulation
Power of Four Math, Bit Manipulation, Recursion
Hamming Distance Bit Manipulation
Minimum String Length After Removing Substrings String, Stack, Simulation
Number of Students Unable to Eat Lunch Array, Stack, Queue
Time Needed to Buy Tickets Array, Queue, Simulation
Final Prices With a Special Discount in a Shop Array, Stack, Monotonic Stack
Crawler Log Folder Array, String, Stack
Make The String Great String, Stack
Baseball Game Array, String, Stack
Sort Integers by The Number of 1 Bits Array, Bit Manipulation, Sorting
Minimum Absolute Difference Array, Sorting
Sort Array by Increasing Frequency Array, Hash Table, Sorting
Maximum Score After Splitting a String String, Prefix Sum
Smallest Range I Array, Math
Minimum Cost to Move Chips to The Same Position Array, Math, Greedy
Maximum Units on a Truck Array, Greedy, Sorting
Assign Cookies Array, Two Pointers, Greedy
Divisor Game Math, Dynamic Programming, Brainteaser
Matrix Cells in Distance Order Array, Math, Matrix
Find Winner on a Tic Tac Toe Game Array, Hash Table, Matrix
Cells with Odd Values in a Matrix Array, Math, Simulation
Largest Local Values in a Matrix Array, Matrix
Check if Matrix Is X-Matrix Array, Matrix
Determine Whether Matrix Can Be Obtained By Rotation Array, Matrix
Pascal's Triangle II Array, Dynamic Programming
Number of Equivalent Domino Pairs Array, Hash Table, Counting
Lucky Numbers in a Matrix Array, Matrix
Image Smoother Array, Matrix
Flipping an Image Array, Two Pointers, Matrix
Reshape the Matrix Array, Matrix, Simulation
Apply Operations to an Array Array, Two Pointers, Simulation
Minimum Number of Moves to Seat Everyone Array, Greedy, Sorting
Maximum Product Difference Between Two Pairs Array, Greedy, Sorting
Count Good Triplets Array, Enumeration
Maximum Product of Two Elements in an Array Array, Sorting, Heap
Check If N and Its Double Exist Array, Hash Table, Two Pointers
Can Make Arithmetic Progression From Sequence Array, Sorting
Reverse Prefix of Word Two Pointers, String, Stack
Split a String in Balanced Strings String, Greedy, Counting
Remove Outermost Parentheses String, Stack
Determine if String Halves Are Alike String, Counting
Maximum Number of Balloons Hash Table, String, Counting
Buddy Strings Hash Table, String
Maximum Nesting Depth of the Parentheses String, Stack
Goal Parser Interpretation String
Jewels and Stones Hash Table, String
Reverse Vowels of a String Two Pointers, String
Relative Sort Array Array, Hash Table, Sorting
Sort Array By Parity Array, Two Pointers, Sorting
Can Place Flowers Array, Greedy
Create Target Array in the Given Order Array, Simulation
Shuffle the Array Array
Number of Good Pairs Array, Hash Table, Math
How Many Numbers Are Smaller Than the Current Number Array, Hash Table, Counting Sort
Find Pivot Index Array, Prefix Sum
Maximum 69 Number Math, Greedy
Number of Steps to Reduce a Number to Zero Math, Bit Manipulation
N-th Tribonacci Number Math, Dynamic Programming, Memoization
Add Binary Math, String, Bit Manipulation
Add Digits Math, Simulation, Number Theory
Ugly Number Math

Medium (84)

Longest Subsequence With Limited Sum Array, Binary Search, Greedy
Partition Array for Maximum Sum Array, Dynamic Programming
Maximum Number of Non-overlapping Palindrome Substrings String, Dynamic Programming, Greedy
Number of Ways to Reach a Position After Exactly k Steps Math, Dynamic Programming, Combinatorics
Longest Substring of All Vowels in Order String, Sliding Window
Sort Vowels in a String String, Sorting
Find the Integer Added to Array II Array, Two Pointers, Sorting
Find the Value of the Partition Array, Sorting
K-th Smallest Prime Fraction Array, Binary Search, Sorting
Maximum Number of Events That Can Be Attended Array, Greedy, Sorting
Find the Kth Largest Integer in the Array Array, String, Sorting
Course Schedule IV Graph, Topological Sort, Depth-First Search
Parallel Courses Graph, Topological Sort, Breadth-First Search
Matrix Block Sum Array, Matrix, Prefix Sum
Where Will the Ball Fall Array, Matrix, Simulation
Find the N-th Value After K Seconds Array, Math, Simulation
Predict the Winner Array, Dynamic Programming, Recursion
Longest Arithmetic Subsequence Array, Hash Table, Dynamic Programming
Find Three Consecutive Integers That Sum to a Given Number Math, Simulation
H-Index II Array, Binary Search
Maximize the Confusion of an Exam String, Sliding Window, Prefix Sum
Longest Mountain in Array Array, Two Pointers, Dynamic Programming
Sort Transformed Array Array, Two Pointers, Math
Bag of Tokens Array, Two Pointers, Greedy
4Sum Array, Two Pointers, Sorting
Sum of Square Numbers Math, Two Pointers, Binary Search
Minimum Array End Bit Manipulation, Greedy
XOR Queries of a Subarray Bit Manipulation, Array, Prefix Sum
Find The Original Array of Prefix Xor Bit Manipulation, Array, Prefix Sum
Bitwise XOR of All Pairings Bit Manipulation, Array, Brainteaser
The kth Factor of n Math, Number Theory
Clumsy Factorial Math, Stack, Simulation
Reordered Power of 2 Math, Counting, Enumeration
Closest Divisors Math, Number Theory
Prime Subtraction Operation Array, Math, Greedy
Smallest Value After Replacing With Sum of Prime Factors Math, Number Theory, Simulation
Group the People Given the Group Size They Belong To Hash Table, Array, Greedy
Equal Row and Column Pairs Hash Table, Matrix, Simulation
Count Nice Pairs in an Array Array, Hash Table, Math
Replace Words String, Trie, Hash Table
Longest Word in Dictionary String, Trie, Hash Table
Minimum Length of String After Deleting Similar Ends String, Two Pointers
Can Convert String in K Moves String, Hash Table, Greedy
Check If a String Can Break Another String String, Greedy, Sorting
Maximum Length of a Concatenated String With Unique Characters String, Bit Manipulation, Backtracking
Find and Replace Pattern String, Hash Table
Count Triplets With Sum Smaller Than X Array, Two Pointers, Sorting
Maximum Index Array, Two Pointers
Minimum Swaps to Sort Array, Sorting, Graph
Longest Palindromic Subsequence String, Dynamic Programming
Unique Binary Search Trees Dynamic Programming, Math
Minimum Operations to Make Array Equal Math
Smallest Value of the Rearranged Number Math, Sorting
Minimum Flips to Make a OR b Equal to c Bit Manipulation
Remove All Occurrences of a Substring String, Stack, Simulation
Removing Stars From a String String, Stack, Simulation
Build an Array With Stack Operations Array, Stack, Simulation
Minimum Time to Make Rope Colorful Array, String, Dynamic Programming
Rearrange Array Elements by Sign Array, Two Pointers, Simulation
Maximum Number of Coins You Can Get Array, Math, Greedy
Largest Number Array, String, Greedy
Maximum Ice Cream Bars Array, Greedy, Sorting
Minimum Number of Steps to Make Two Strings Anagram Hash Table, String, Counting
Two City Scheduling Array, Greedy, Sorting
Combination Sum IV Array, Dynamic Programming
Ones and Zeroes Array, String, Dynamic Programming
Stone Game Array, Math, Dynamic Programming
Ugly Number II Hash Table, Math, Dynamic Programming
Perfect Squares Math, Dynamic Programming, Breadth-First Search
Triangle Array, Dynamic Programming
Count Sorted Vowel Strings Dynamic Programming, Math, Combinatorics
Wiggle Subsequence Array, Dynamic Programming, Greedy
Best Time to Buy and Sell Stock with Cooldown Array, Dynamic Programming
Delete and Earn Array, Hash Table, Dynamic Programming
Unique Paths II Array, Dynamic Programming, Matrix
Spiral Matrix II Array, Matrix, Simulation
Remove Duplicates from Sorted Array II Array, Two Pointers
Maximum Number of Vowels in a Substring of Given Length String, Sliding Window
String Compression Two Pointers, String
Majority Element II Array, Hash Table, Sorting
Shortest Unsorted Continuous Subarray Array, Two Pointers, Sorting
Integer to Roman Hash Table, Math, String
Count Primes Math, Sieve of Eratosthenes
Reverse Integer Math

Hard (7)

Number of Increasing Paths in a Grid Array, Matrix, Dynamic Programming
Grid Illumination Array, Hash Table, Matrix
Minimum Difficulty of a Job Schedule Array, Dynamic Programming
Profitable Schemes Array, Dynamic Programming
Number of Ways to Paint N × 3 Grid Dynamic Programming
Minimum Falling Path Sum II Array, Matrix, Dynamic Programming
Palindrome Partitioning II String, Dynamic Programming

Topics Adobe asks most

Arrays 112 problems
Strings 59 problems
Math 56 problems
Sorting 34 problems
Hash Table 33 problems
Greedy 32 problems
Simulation 31 problems
Dynamic Programming 29 problems
Two Pointers 24 problems
Bit Manipulation 24 problems
Matrix 19 problems
Counting 16 problems