Problem database last updated: June 20, 2025
4 problems · 3 Easy, 1 Medium, 0 Hard · Ranked #267 of 458
3 Easy
75% · avg 23%
1 Medium
25% · avg 59%
0 Hard
0% · avg 18%
Based on 4 reported problems, Tripadvisor interviews are easier than average - only 0% Hard compared to 18% across all companies.
Compared to the industry average, Tripadvisor puts unusual emphasis on hash-table (50% of problems, 2.2x the industry average), string (50% of problems, 1.8x the industry average). If you're short on time, these are the categories to double down on.
The most common topics are array (50%), hash-table (50%), string (50%), stack (25%). Problems below are sorted by frequency, the ones at the top are asked most often.
| Problem | Difficulty | Frequency | Topics | |
|---|---|---|---|---|
Find Common Characters Given a string array words, return an array of all characters that show up in all strings within the words (including duplicates). You may return the answer in... | Easy | Very Likely | arrayhash-tablestring | Solve |
Valid Parentheses Given a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. | Easy | Very Likely | stringstack | Solve |
LRU Cache Design a data structure that follows the constraints of a Least Recently Used (LRU) cache. | Medium | Likely | hash-tablelinked-listdesign | Solve |
Best Time to Buy and Sell Stock You are given an array prices where prices[i] is the price of a given stock on the ith day. | Easy | Likely | arraydynamic-programming | Solve |
Find Common Characters
SolveGiven a string array words, return an array of all characters that show up in all strings within the words (including duplicates). You may return the answer in...
Valid Parentheses
SolveGiven a string s containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid.
LRU Cache
SolveDesign a data structure that follows the constraints of a Least Recently Used (LRU) cache.
Best Time to Buy and Sell Stock
SolveYou are given an array prices where prices[i] is the price of a given stock on the ith day.
Frequency scores are based on crowdsourced interview reports. A higher score means the problem has been reported more often in recent Tripadvisor interviews.
Very Likely
75-100%
Likely
50-74%
Sometimes
25-49%
Rare
0-24%
Tripadvisor interviews focus heavily on array, hash-table, string 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. Tripadvisor 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.
Looking for more companies? Browse all 458 companies in our directory, or sharpen your fundamentals with our free data structure visualizers and AI-powered DSA tutor.
Tripadvisor has been reported to ask 4 distinct coding problems. The most common topics are array, hash-table, string. 3 are Easy difficulty, 1 are Medium, and 0 are Hard. Problems are sorted by frequency - the ones at the top are asked most often.
Based on 4 reported problems, Tripadvisor interviews are easier than average - only 0% Hard compared to 18% across all companies. 25% 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: array, hash-table, string. 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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