Problem database last updated: June 20, 2025
9 problems · 5 Easy, 3 Medium, 1 Hard · Ranked #153 of 459
5 Easy
56% · avg 23%
3 Medium
33% · avg 59%
1 Hard
11% · avg 18%
Based on 9 reported problems, Spotify interviews are in line with industry averages - 11% Hard vs 18% overall.
Compared to the industry average, Spotify puts unusual emphasis on heap-priority-queue (22.2% of problems, 3.6x the industry average), breadth-first-search (22.2% of problems, 2.6x the industry average), string (44.4% of problems, 1.6x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are string (44.4%), array (33.3%), hash-table (33.3%), sorting (22.2%). Problems below are sorted by frequency, the ones at the top are asked most often.
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
Two Sum Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target. | Easy | Very Likely | arrayhash-table | Solve |
Longest Substring Without Repeating Characters Given a string s, find the length of the longest substring without duplicate characters. | Medium | Very Likely | hash-tablestringsliding-window | Solve |
Kth Largest Element in an Array Given an integer array nums and an integer k, return the kth largest element in the array. | Medium | Very Likely | arraydivide-and-conquersorting | Solve |
Valid Parentheses Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. | Easy | Very Likely | stringstack | Solve |
Valid Palindrome A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forwa... | Easy | Very Likely | two-pointersstring | Solve |
Maximum Depth of Binary Tree Given the root of a binary tree, return its maximum depth. | Easy | Likely | treedepth-first-searchbreadth-first-search | Solve |
Find Median from Data Stream The median is the middle value in an ordered integer list. If the size of the list is even, there is no middle value, and the median is the mean of the two midd... | Hard | Likely | two-pointersdesignsorting | Solve |
Ransom Note Given two strings ransomNote and magazine, return true if ransomNote can be constructed by using the letters from magazine and false otherwise. | Easy | Likely | hash-tablestringcounting | Solve |
Walls and Gates You are given an m x n grid rooms initialized with these three possible values: | Medium | Likely | arraybreadth-first-searchmatrix | Solve |
Two Sum
SolveGiven an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.
Longest Substring Without Repeating Characters
SolveGiven a string s, find the length of the longest substring without duplicate characters.
Kth Largest Element in an Array
SolveGiven an integer array nums and an integer k, return the kth largest element in the array.
Valid Parentheses
SolveGiven a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
Valid Palindrome
SolveA phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forwa...
Maximum Depth of Binary Tree
SolveGiven the root of a binary tree, return its maximum depth.
Find Median from Data Stream
SolveThe median is the middle value in an ordered integer list. If the size of the list is even, there is no middle value, and the median is the mean of the two midd...
Ransom Note
SolveGiven two strings ransomNote and magazine, return true if ransomNote can be constructed by using the letters from magazine and false otherwise.
Walls and Gates
SolveYou are given an m x n grid rooms initialized with these three possible values:
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent Spotify interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
Spotify interviews focus heavily on string, array, hash-table problems. If you're short on time, these are the categories to prioritize. The problems on this page are sorted by frequency, so start from the top and work your way down.
Beyond solving problems, practice explaining your approach. Spotify interviewers care about your thought process - how you break down a problem, consider edge cases, and evaluate tradeoffs between solutions. A clean O(n) solution you can explain clearly beats an O(log n) solution you can't articulate.
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Spotify has been reported to ask 9 distinct coding problems. The most common topics are string, array, hash-table. 5 are Easy difficulty, 3 are Medium, and 1 are Hard. Problems are sorted by frequency - the ones at the top are asked most often.
Based on 9 reported problems, Spotify interviews are in line with industry averages - 11% Hard vs 18% overall. 33% of questions are Medium difficulty. Focus on the high-frequency Medium problems first, then work through the Hard ones.
Start with the highest-frequency problems listed on this page. Focus on the core topics: string, array, hash-table. Practice solving them under time pressure and explaining your approach out loud. Mock interviews with AI can simulate the real experience.
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