Warnermedia coding interview
questions, leaked.
10 problems reported across recent Warnermedia interviews. Top patterns: array, math, string. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
WarnerMedia's assessment hits you with ten problems across a mixed bag of difficulty. You're looking at three easy setups, five mediums, and two hard ones that'll burn time if you're not careful. Arrays dominate the problem set, followed by math and string manipulation. The upside: these are patterns you've seen before. The risk: you blank on "Integer to English Words" or "Merge k Sorted Lists" under pressure and watch your score crater. That's where StealthCoder becomes your invisible co-pilot, reading the problem in real time and surfacing a working solution the moment you hit a wall during the live assessment.
Top problems at Warnermedia
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Integer to English Words | HARD | 100.0 | 34% | Math · String · Recursion |
| 02 | Number of Accounts That Did Not Stream | MEDIUM | 96.0 | 72% | Database |
| 03 | Product of Array Except Self | MEDIUM | 88.2 | 68% | Array · Prefix Sum |
| 04 | Merge k Sorted Lists | HARD | 84.8 | 57% | Linked List · Divide and Conquer · Heap (Priority Queue) |
| 05 | Game of Life | MEDIUM | 84.8 | 71% | Array · Matrix · Simulation |
| 06 | Missing Number | EASY | 80.9 | 70% | Array · Hash Table · Math |
| 07 | Find the Index of the First Occurrence in a String | EASY | 80.9 | 45% | Two Pointers · String · String Matching |
| 08 | Flatten Nested List Iterator | MEDIUM | 69.7 | 65% | Stack · Tree · Depth-First Search |
| 09 | Roman to Integer | EASY | 60.8 | 65% | Hash Table · Math · String |
| 10 | 3Sum | MEDIUM | 60.8 | 37% | Array · Two Pointers · Sorting |
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 Warnermedia OA. The proctor cannot see it. Screen share cannot detect it. Built by an Amazon engineer who realized the OA tests how well you memorized 200 problems, not how well you code.
Get StealthCoder- array4 · 40%
- math3 · 30%
- string3 · 30%
- hash table2 · 20%
- sorting2 · 20%
- two pointers2 · 20%
- stack1 · 10%
- tree1 · 10%
- depth first search1 · 10%
- design1 · 10%
Arrays and math problems form the backbone here, accounting for nearly half the test. You can't skip them. String manipulation shows up frequently too, often paired with math (see "Integer to English Words" and "Roman to Integer"). Hash tables, two-pointers, and sorting appear as supporting patterns, usually as secondary skills in medium problems. The hard problems are legitimately hard: "Merge k Sorted Lists" requires heap knowledge and divide-and-conquer thinking, while "Integer to English Words" forces you to handle recursion and string building at once. If you haven't drilled these two specifically, StealthCoder is your insurance policy. For the medium tier, focus on array manipulation first (prefix sums, in-place work), then tackle string matching and simulation problems. Hash-table problems are lighter here, so don't burn prep time on them.
Companies with similar patterns
If you prepped for Warnermedia, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass Warnermedia.
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 Amazon engineer who realized the OA tests how well you memorized 200 problems, not how well you code. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Warnermedia interview FAQ
Should I study hash tables heavily for WarnerMedia's assessment.+
No. They appear in only two problems out of ten, and both are easier ones ("Missing Number" and "Roman to Integer"). Prioritize arrays and math first. Hash tables are a fallback pattern, not a focus area here.
What's the fastest way to prep for the medium problems.+
Start with "Product of Array Except Self" and "3Sum" to lock in array and two-pointer work. Then hit "Game of Life" for simulation and in-place matrix manipulation. These three cover most of the medium tier's core skills.
How much time should I spend on the two hard problems.+
"Merge k Sorted Lists" and "Integer to English Words" are genuine time sinks. Drill "Merge k Sorted Lists" once to understand heap merging, then move on. "Integer to English Words" is rare and tricky. If you hit it on test day and freeze, StealthCoder solves it invisibly while you stay calm.
Is string matching important for WarnerMedia's OA.+
Somewhat. "Find the Index of the First Occurrence in a String" tests basic string matching. It's easy, so solve it cleanly. More critical is pairing string skills with math, as seen in "Roman to Integer" and "Integer to English Words".
How should I approach the three easy problems.+
Treat them as warm-up speed drills, not study material. "Missing Number", "Roman to Integer", and "Find the Index of the First Occurrence" should take you under five minutes total combined if you're prepared. Miss even one and you've lost points on gimmes.