Qualtrics coding interview
questions, leaked.
3 problems reported across recent Qualtrics interviews. Top patterns: array, stack, simulation. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
Qualtrics pulls from a shallow problem pool, and that's your advantage. Only three known problems reported across all their assessments, which means you're not facing a sprawling topic matrix. Two are medium difficulty, one easy. The stack and simulation pattern from Asteroid Collision shows up once; array manipulation anchors the rest. If you've seen these three, you're covered. If you haven't, StealthCoder runs invisibly during the live OA and solves whatever you blank on in seconds, no proctor detection.
Top problems at Qualtrics
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Count Square Sum Triples | EASY | 100.0 | 69% | Math · Enumeration |
| 02 | Asteroid Collision | MEDIUM | 95.2 | 46% | Array · Stack · Simulation |
| 03 | Group Anagrams | MEDIUM | 65.5 | 71% | 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 Qualtrics 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- array2 · 67%
- stack1 · 33%
- simulation1 · 33%
- hash table1 · 33%
- string1 · 33%
- sorting1 · 33%
- math1 · 33%
- enumeration1 · 33%
Array problems dominate the reports, appearing twice across the three known problems. Hash tables, strings, sorting, math, enumeration, and stacks each show up once, clustered inside medium-difficulty problems like Group Anagrams and Asteroid Collision. The easy entry point (Count Square Sum Triples) is pure math and enumeration, no data structures. Strategy: crush the array problems first because repetition matters. Stack and simulation are lower frequency but Asteroid Collision is meaty enough to warrant a drill. When you sit down for the actual OA, you're either executing what you've practiced or hitting StealthCoder as your real-time safety net if the problem deviates.
Companies with similar patterns
If you prepped for Qualtrics, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass Qualtrics.
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.
Qualtrics interview FAQ
How many problems should I solve to be ready for Qualtrics?+
Three problems dominate all reports, so solve those three plus 5-8 variants on each topic. The medium-difficulty problems (Group Anagrams, Asteroid Collision) are your priority because they stack multiple topics. The easy problem is a warm-up, not a time sink.
What topic should I study first for Qualtrics?+
Arrays. Two of the three reported problems use arrays as the primary data structure. Hash tables, stacks, and strings appear but only in one problem each. Master array traversal, manipulation, and indexing before moving to the hybrid patterns.
Is stack and simulation practice enough for Qualtrics?+
No. Stack appears in only one reported problem (Asteroid Collision), and simulation is bundled inside it. You need array fluency first. Stack is the hedge, not the foundation. Once you're solid on arrays, drill Asteroid Collision to handle the stack-simulation combo.
Should I spend time on math and enumeration for Qualtrics?+
Only the easy problem focuses on math and enumeration (Count Square Sum Triples). It's a solid warm-up and confidence builder, but medium-difficulty problems are where Qualtrics filters candidates. Math alone won't carry you through the OA.
What if I see a problem I haven't drilled during the OA?+
Three reported problems means coverage is tight, but the OA could variation or new problems. StealthCoder reads the problem in real time and surfaces a working solution invisibly during screen share. You get your edge back the moment you blank.