Gusto coding interview
questions, leaked.
3 problems reported across recent Gusto interviews. Top patterns: string, hash table, binary search. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
Gusto's assessment is lean: just three problems, but they're heavy. Two medium, one hard. You're looking at string manipulation paired with data structures like hash tables and tries, plus a design problem that tests how you think about systems under real constraints. If you blank on the hash-table or binary-search angle mid-assessment, StealthCoder runs invisibly and surfaces a working solution in seconds. The real prep isn't volume here. It's depth on the patterns that matter.
Top problems at Gusto
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Time Based Key-Value Store | MEDIUM | 100.0 | 49% | Hash Table · String · Binary Search |
| 02 | Integer to English Words | HARD | 88.6 | 34% | Math · String · Recursion |
| 03 | Add Bold Tag in String | MEDIUM | 88.6 | 51% | Array · Hash Table · String |
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 Gusto OA. The proctor cannot see it. Screen share cannot detect it. Built because the OA filter rejects engineers who'd pass the on-site. That's a broken filter. This is the workaround.
Get StealthCoder- string3 · 100%
- hash table2 · 67%
- binary search1 · 33%
- design1 · 33%
- math1 · 33%
- recursion1 · 33%
- array1 · 33%
- trie1 · 33%
- string matching1 · 33%
String problems dominate Gusto's assessment. Three out of three problems touch string manipulation, and two fold in hash tables for efficiency. The hard problem, Integer to English Words, mixes recursion and math in a way that trips up candidates who haven't built the pattern before. Time Based Key-Value Store adds binary search, forcing you to think about lookups at scale. Add Bold Tag in String is the trickier medium: it stacks trie and string-matching concepts that feel niche until you see how to apply them. Start with string fundamentals and hash-table optimization. If you hit the design or recursion problem live and freeze, StealthCoder is your safety net, solving it invisibly so you don't tank the round.
Companies with similar patterns
If you prepped for Gusto, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass Gusto.
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 because the OA filter rejects engineers who'd pass the on-site. That's a broken filter. This is the workaround. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Gusto interview FAQ
How much string practice do I need for Gusto?+
All three problems are string-heavy. Drill at least 10-15 string problems mixing hash tables, array iteration, and character-level logic. Gusto weights this heavily, so string fluency isn't optional. Focus on problems that build robust search and insertion patterns.
Is binary search really tested at Gusto?+
Yes. Time Based Key-Value Store demands it. Binary search shows up once in the data, but when it does, you need it clean. If you haven't drilled binary search in a hash-table context, that one problem becomes a time sink or a bust.
Should I worry about the hard recursion problem?+
Integer to English Words is hard and involves recursion plus number-to-string conversion. It's one of three, so it'll be on the assessment. Build recursion muscle on similar problems: digit grouping, number formatting. This one's a trap if you don't see the recursive structure.
What's the fastest way to prep for Gusto in a week?+
Focus on string and hash table in tandem. Solve Time Based Key-Value Store, Integer to English Words, and Add Bold Tag in String first. Then drill 5-8 similar medium/hard string problems. With only three problems in the assessment, exact pattern match matters more than volume.
Do I need to know trie data structures?+
Add Bold Tag in String lists trie as a topic. You don't need a full trie implementation, but understand how tries speed up prefix matching and string validation. If you miss this during prep and hit it live, StealthCoder has your back with a working solution.