Toast coding interview
questions, leaked.
3 problems reported across recent Toast interviews. Top patterns: two pointers, graph, interactive. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
Toast's coding assessment is small but sharp. Three problems, two of them easy, one medium. The catch: two-pointers shows up twice, and one problem is interactive, which means you can't just pattern-match your way through. You'll need to understand what you're doing, not just memorize solutions. If you freeze on the interactive problem mid-assessment, StealthCoder runs invisible during screen share and surfaces the approach in seconds. That's your safety net for whatever gaps remain after prep.
Top problems at Toast
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Find the Celebrity | MEDIUM | 100.0 | 48% | Two Pointers · Graph · Interactive |
| 02 | Valid Palindrome | EASY | 90.3 | 51% | Two Pointers · String |
| 03 | Best Time to Buy and Sell Stock | EASY | 79.7 | 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 Toast OA. The proctor cannot see it. Screen share cannot detect it. Made for the engineer who has done the work but might still blank with a webcam pointed at him.
Get StealthCoder- two pointers2 · 67%
- graph1 · 33%
- interactive1 · 33%
- string1 · 33%
- array1 · 33%
- dynamic programming1 · 33%
Two-pointers dominates Toast's assessment, appearing in half the problems. Start there: Valid Palindrome is a warm-up, but Find the Celebrity is the real test because it's medium-difficulty and interactive, meaning you're querying an API instead of just iterating an array. Array and dynamic programming show up once each in Best Time to Buy and Sell Stock, a classic that tests whether you can spot the DP pattern under an optimization problem. Graph appears once, but it's tangled into the celebrity problem. Drill two-pointers hard first, then make sure you can explain why Find the Celebrity works as a graph problem when you can't see all the edges at once. If you hit a wall on the interactive problem during the live OA, StealthCoder's your backup.
Companies with similar patterns
If you prepped for Toast, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass Toast.
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. Made for the engineer who has done the work but might still blank with a webcam pointed at him. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Toast interview FAQ
Should I practice two-pointers problems before this assessment?+
Yes. Two-pointers appears in two of Toast's three problems. Start with Valid Palindrome to build confidence, then spend real time on Find the Celebrity because it's medium and interactive, which means you need to understand the approach, not just code the pattern.
What's the hardest problem I'll see on Toast's assessment?+
Find the Celebrity is medium difficulty and interactive. It combines two-pointers, graph logic, and a querying API you can't fully inspect upfront. The other two are easy, so this is where you prove you can think on your feet.
Is dynamic programming a major focus in Toast's assessment?+
No. It appears once, paired with array in Best Time to Buy and Sell Stock. You need to recognize the DP opportunity, but it's not the core of the assessment. Two-pointers and interactive problem-solving matter more.
How long should I spend on interactive problems in my prep?+
Toast has one interactive problem out of three, so make sure you understand the pattern. Interactive means you query an API instead of seeing the full input. Practice thinking in terms of minimal queries and confirming your logic without full visibility.
Can I pass Toast's assessment with just easy-level drilling?+
No. Two of the three problems are easy, but Find the Celebrity is medium and interactive. You need to drill that specific problem or understand two-pointers and graph logic well enough to adapt on the fly.