Tripadvisor coding interview
questions, leaked.
4 problems reported across recent Tripadvisor interviews. Top patterns: string, hash table, array. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
Tripadvisor's coding interviews lean hard on string and hash-table problems. You're looking at 4 confirmed problems across their recent rounds, and 75 percent of them are easy. That doesn't mean you'll breeze through. Valid Parentheses and Find Common Characters look simple on the surface but trip up candidates who skip edge cases. You need a fast, reliable baseline across strings, arrays, and hash tables before you sit down. If you blank mid-assessment, StealthCoder runs invisibly during screen share and surfaces working solutions in seconds, so you can stay calm and move forward.
Top problems at Tripadvisor
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Find Common Characters | EASY | 100.0 | 75% | Array · Hash Table · String |
| 02 | Valid Parentheses | EASY | 89.3 | 42% | String · Stack |
| 03 | LRU Cache | MEDIUM | 74.8 | 45% | Hash Table · Linked List · Design |
| 04 | Best Time to Buy and Sell Stock | EASY | 66.4 | 55% | Array · Dynamic Programming |
Frequencies derived from public community-tagged interview reports. Click a row to view on LeetCode.
You have a week, maybe less. You can't out-grind the list above. StealthCoder runs invisibly during the actual Tripadvisor OA. The proctor cannot see it. Screen share cannot detect it. Built by an Amazon engineer who realized the OA tests how well you memorized 200 problems, not how well you code.
Get StealthCoder- string2 · 50%
- hash table2 · 50%
- array2 · 50%
- stack1 · 25%
- linked list1 · 25%
- design1 · 25%
- doubly linked list1 · 25%
- dynamic programming1 · 25%
The distribution tells you something important: Tripadvisor values clean fundamentals over algorithmic depth. String manipulation and hash-table lookups dominate the problem set. One medium-difficulty problem, LRU Cache, combines hash tables, linked lists, and design thinking, so that's your spike to prepare for. Array and dynamic-programming problems appear once each, but both lean toward the accessible side of the skill range. Drill string iteration, hash-map construction, and stack mechanics first. Once you're comfortable there, spend time on LRU Cache to understand how hash tables and linked lists interact in a real system. If you hit an unfamiliar pattern during the live assessment, StealthCoder is your safety net, invisible to the proctor and ready to unlock a working solution so you don't waste time spinning.
Companies with similar patterns
If you prepped for Tripadvisor, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass Tripadvisor.
Memorizing every problem above in a week is a fantasy. StealthCoder is the hedge: an AI overlay that's invisible during screen share. It reads the problem on screen and surfaces a working solution in under 2 seconds. Built by an Amazon engineer who realized the OA tests how well you memorized 200 problems, not how well you code. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Tripadvisor interview FAQ
Should I memorize LRU Cache for Tripadvisor?+
Yes. It's the only medium problem in the dataset and combines multiple topics: hash tables, doubly-linked lists, and design. Understand how to maintain O(1) get and put operations. Master that pattern and you'll handle most Tripadvisor systems-design questions.
Are strings really that important for this interview?+
Yes. Two of the four problems focus on string operations. Valid Parentheses and Find Common Characters test your comfort with iteration, character counting, and edge cases. Start here if you're rusty on ASCII or hash-table frequency counting.
Do I need to study dynamic programming for Tripadvisor?+
Not heavily. Only one problem involves DP (Best Time to Buy and Sell Stock), and it's easy difficulty. DP is a lower priority compared to hash tables and strings. Build your DP intuition after you're solid on the fundamentals.
How many string problems should I solve before the OA?+
Target at least 10 to 15 beyond the two you'll see reported. String problems often pivot on character frequency, pattern matching, or substring logic. Know your hash-map and array iteration patterns cold.
Is the easy difficulty level a trap?+
Partially. Three of four problems are easy, but easy doesn't mean careless. Tripadvisor will test edge cases, empty strings, and boundary conditions. Don't rush easy problems in the live OA. Precision beats speed.