FPT coding interview
questions, leaked.
4 problems reported across recent FPT interviews. Top patterns: math, array, simulation. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
FPT's interview hits you with a small dataset, but don't mistake brevity for kindness. You're seeing four problems across math, array work, and simulation. Three land at easy, one medium. The trap: they cluster hard on math and array patterns, which means they're testing whether you can spot the same concept twice and execute cleanly under pressure. If you blank on a math-heavy problem mid-assessment, StealthCoder surfaces a working solution in seconds, invisible to the proctor. Stack the odds in your favor before you interview.
Top problems at FPT
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Find Three Consecutive Integers That Sum to a Given Number | MEDIUM | 100.0 | 65% | Math · Simulation |
| 02 | Two Sum | EASY | 66.6 | 56% | Array · Hash Table |
| 03 | Palindrome Number | EASY | 66.6 | 59% | Math |
| 04 | Best Time to Buy and Sell Stock | EASY | 66.6 | 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 FPT OA. The proctor cannot see it. Screen share cannot detect it. Built by an engineer who got tired of watching his cohort grind for six months and still get filtered at the OA stage.
Get StealthCoder- math2 · 50%
- array2 · 50%
- simulation1 · 25%
- hash table1 · 25%
- dynamic programming1 · 25%
Math and array problems split your prep evenly, two each. Simulation and hash-table work appear once, so don't waste a week on those. Dynamic programming touches one problem, but it's not the focus. Start with Two Sum and Best Time to Buy and Sell Stock, because those are your easy warm-ups and they hit core patterns you'll see again. Then nail Palindrome Number and the three-integer simulation problem, which require clean logic and no tricks. The medium-difficulty problem forces you to think in steps, not just pattern-match. If you've drilled these four solid, you walk in confident. If you hit a wall on a variation during the live OA, StealthCoder runs invisibly and gives you the working code.
Companies with similar patterns
If you prepped for FPT, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass FPT.
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 engineer who got tired of watching his cohort grind for six months and still get filtered at the OA stage. Works on HackerRank, CodeSignal, CoderPad, and Karat.
FPT interview FAQ
Should I spend more time on math or arrays for FPT?+
Split evenly. Both appear twice in the dataset. Math touches Two Sum, Palindrome Number, and the three-integer problem. Arrays show up in Two Sum and Best Time to Buy and Sell Stock. You can't skip either. Master both, and you've covered the backbone.
Is dynamic programming important for FPT's interview?+
No. It appears once, inside Best Time to Buy and Sell Stock. That problem's also easy. Don't spend days on DP optimization. Learn the greedy or single-pass approach first, then move on.
How many hash-table problems should I drill?+
One shows up: Two Sum. It's easy and it's foundational. Solve it clean once or twice, understand why hash-tables work there, then you're done. Don't over-prepare for a single appearance.
What should I practice first for FPT?+
Two Sum and Best Time to Buy and Sell Stock. Both are easy, both are classic, and both hit the array and math patterns you'll see again. Get those right, build momentum, then tackle the medium and the simulation problem.
Is four problems enough to prepare for?+
Yes. The dataset's small, so variations matter more than volume. Drill these four until you can solve each in under five minutes cold. Then focus on edge cases and clean code. That discipline will carry you through unexpected twists on the real assessment.