Garmin coding interview
questions, leaked.
6 problems reported across recent Garmin interviews. Top patterns: array, string, hash table. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
Garmin's assessment is deceptively simple: all six reported problems sit at the easy level, and arrays dominate the question bank. You're looking at straightforward patterns like Two Sum, Best Time to Buy and Sell Stock, and Reverse String. The trap is underestimating the pace. You'll have time to solve each one cleanly if you know the moves, but blanking on array indexing or forgetting a hash-table lookup under live pressure costs rounds. StealthCoder sits invisible during your assessment and surfaces working solutions the moment you hit a wall, so even if a pattern doesn't click in the moment, you keep moving.
Top problems at Garmin
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Best Time to Buy and Sell Stock | EASY | 100.0 | 55% | Array · Dynamic Programming |
| 02 | Minimum Cost of Buying Candies With Discount | EASY | 100.0 | 62% | Array · Greedy · Sorting |
| 03 | Two Sum | EASY | 89.2 | 56% | Array · Hash Table |
| 04 | Reverse String | EASY | 89.2 | 80% | Two Pointers · String |
| 05 | Delete Columns to Make Sorted | EASY | 89.2 | 75% | Array · String |
| 06 | Palindrome Number | EASY | 89.2 | 59% | Math |
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 Garmin 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- array4 · 67%
- string2 · 33%
- hash table1 · 17%
- dynamic programming1 · 17%
- greedy1 · 17%
- sorting1 · 17%
- two pointers1 · 17%
- math1 · 17%
Array problems appear in roughly two-thirds of the question set, making them your primary focus. Most are single-pass or two-pointer operations. Buy-and-sell stock teaches you to track state across iterations, while candy discounts reward greedy logic and sorting intuition. String problems are lighter but require clean two-pointer or reversal logic. Hash tables and dynamic programming each show up once, suggesting they're safety-check topics rather than core. The distribution rewards candidates who can chain simple operations fast: iterate, compare, update, return. If you've drilled the classic array patterns, you'll recognize most shapes here. StealthCoder is your hedge for the one problem whose pattern doesn't land immediately on read, giving you the seconds you need to decode the solution and move forward.
Companies with similar patterns
If you prepped for Garmin, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass Garmin.
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.
Garmin interview FAQ
What topic should I study first for Garmin?+
Array operations. Four of six problems center on arrays, and the patterns are foundational: iteration, state tracking, index manipulation. Master Two Sum and Best Time to Buy and Sell Stock first. They teach the core moves that appear across the others. String and hash-table problems follow naturally once arrays are solid.
Is practicing only easy problems enough for Garmin?+
Yes, if you execute cleanly. All six reported problems are easy difficulty. The interview isn't testing advanced algorithms. It's testing whether you can read a constraint, code a solution, and handle edge cases without hesitation. Speed and accuracy matter more than complexity.
How much time should I spend on dynamic programming for this role?+
Minimal. DP appears once in the reported problems, bundled with Best Time to Buy and Sell Stock. That problem teaches a greedy state-tracking approach first, then mentions DP as an alternative. Master the greedy solution and you're covered. Don't chase DP depth here.
Should I prepare two-pointer problems separately?+
It's useful context but not a primary focus. Reverse String is the reported two-pointer problem, and it's a warm-up. Two-pointer logic applies to some array problems too, but it's a side benefit, not the core skill. Array fundamentals matter far more.
What's the risk of skipping hash-table practice?+
Low risk here. Hash tables appear once, in Two Sum, which is about recognizing that a hash lookup beats nested loops. If you know the pattern, you're set. But given array problems dominate, spend your last hour on array edge cases instead.