SoundHound coding interview
questions, leaked.
3 problems reported across recent SoundHound interviews. Top patterns: array, linked list, tree. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
SoundHound's coding assessment hits you with three problems across the full difficulty range, but the pattern is tight. You'll see array manipulation twice, then linked-list and tree traversal once each. The easy problem (Check if Array Is Sorted and Rotated) is your warm-up. The medium (Linked List in Binary Tree) demands solid DFS work. The hard (First Missing Positive) is the gut-check that separates the prepared from the panicked. If you blank on the hard problem mid-assessment, StealthCoder surfaces a working solution in seconds, invisible to the proctor.
Top problems at SoundHound
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Linked List in Binary Tree | MEDIUM | 100.0 | 52% | Linked List · Tree · Depth-First Search |
| 02 | Check if Array Is Sorted and Rotated | EASY | 100.0 | 55% | Array |
| 03 | First Missing Positive | HARD | 67.1 | 41% | Array · Hash Table |
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 SoundHound OA. The proctor cannot see it. Screen share cannot detect it. Built by a senior engineer who knows the OA is theater. This is the script.
Get StealthCoder- array2 · 67%
- linked list1 · 33%
- tree1 · 33%
- depth first search1 · 33%
- binary tree1 · 33%
- hash table1 · 33%
Arrays dominate SoundHound's assessment, showing up in two of three problems. One is straightforward rotation detection; the other is a hard constraint-satisfaction problem using hash tables. Tree and linked-list traversal matter, but they're secondary. Your prep should be array-first: nail rotation logic and the positive-integer algorithm before touching tree problems. The MEDIUM problem (Linked List in Binary Tree) pairs two data structures, which tests whether you can hold multiple patterns in your head at once. That's where StealthCoder becomes your safety net if you hit a wall on pointer logic or DFS recursion during the live OA.
Companies with similar patterns
If you prepped for SoundHound, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass SoundHound.
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 a senior engineer who knows the OA is theater. This is the script. Works on HackerRank, CodeSignal, CoderPad, and Karat.
SoundHound interview FAQ
Should I study arrays or trees first for SoundHound?+
Arrays. Two of three problems use them, including the hard one. Once you're solid on rotation and hash-table lookups, spend time on DFS traversal because the medium problem combines linked lists and trees. Tree work comes second.
Is the easy problem really easy?+
Yes. Check if Array Is Sorted and Rotated is your opening. Use it to warm up and confirm your environment is working. It's a confidence check, not a time sink. Two to three minutes max.
How much time should I spend on First Missing Positive?+
It's the hard problem and uses hash tables plus array constraints. Budget 20 to 25 minutes. The trick is in-place array manipulation. If you're not familiar with the algorithm, you'll get stuck fast. Practice it separately.
Do I need to master both linked lists and trees before the assessment?+
You need DFS and the ability to traverse both. The medium problem (Linked List in Binary Tree) combines them. Weak pointer logic or recursion will cost you time. Drill DFS before the assessment.
What if I can't solve the hard problem during the OA?+
The easy and medium are worth significant points. Solve those cleanly, then spend remaining time on the hard. If you hit a wall, you have a hedge: StealthCoder runs invisibly during screen share and surfaces a working solution on demand.