Zynga coding interview
questions, leaked.
4 problems reported across recent Zynga interviews. Top patterns: array, stack, monotonic stack. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
Zynga's interview is lean but sharp. Four problems, split across easy to hard, and you're looking at patterns that repeat: arrays and stacks dominate the list. Largest Rectangle in Histogram is a classic hard problem that tests your monotonic-stack chops. Asteroid Collision hits medium and forces you to think about stack-based simulation. If you blank mid-assessment on either one, StealthCoder runs invisibly and surfaces a working solution in seconds, no proctor sight line. The real edge is knowing what to drill first.
Top problems at Zynga
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Largest Rectangle in Histogram | HARD | 100.0 | 47% | Array · Stack · Monotonic Stack |
| 02 | Asteroid Collision | MEDIUM | 71.5 | 46% | Array · Stack · Simulation |
| 03 | Reverse Linked List | EASY | 71.5 | 79% | Linked List · Recursion |
| 04 | Longest Substring Without Repeating Characters | MEDIUM | 71.5 | 37% | Hash Table · String · Sliding Window |
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 Zynga OA. The proctor cannot see it. Screen share cannot detect it. Built by an engineer at a top-10 tech company who can solve these problems cold but didn't want to trust himself in a 90-minute screen share.
Get StealthCoder- array2 · 50%
- stack2 · 50%
- monotonic stack1 · 25%
- simulation1 · 25%
- linked list1 · 25%
- recursion1 · 25%
- hash table1 · 25%
- string1 · 25%
- sliding window1 · 25%
Arrays and stacks appear in half the problems here. Monotonic stack isn't just a bonus pattern, it's the hard problem. Start with Asteroid Collision to build stack intuition and simulation thinking, then move to Largest Rectangle. Reverse Linked List is the gimme, but don't skip it cold. Longest Substring Without Repeating Characters rounds out the set and tests sliding window plus hash-table recall. The jump from easy to hard is steep. If you hit Largest Rectangle in the live assessment and freeze, StealthCoder is your hedge, it reads the problem and delivers a working approach while you stay invisible to the proctor.
Companies with similar patterns
If you prepped for Zynga, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass Zynga.
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 at a top-10 tech company who can solve these problems cold but didn't want to trust himself in a 90-minute screen share. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Zynga interview FAQ
Should I study stack or array problems first for Zynga?+
Both appear equally in their list, but stack problems here are harder. Start with arrays and sliding window (Longest Substring) to build confidence, then move to stacks. Asteroid Collision is the medium bridge. Monotonic stack (Largest Rectangle) is the final climb.
Is Reverse Linked List really on Zynga's list?+
Yes, it's the easy problem. Don't write it off. It tests recursion and linked-list fundamentals. Solve it cold at least twice before the assessment. It's a confidence builder and usually appears early in their assessments.
How much time should I spend on Largest Rectangle in Histogram?+
It's the only hard problem they report. Spend real time here. Understand monotonic stack, not just the trick. Solve it three times: once with hints, once alone, once under time pressure. Know the intuition cold.
Do I need to master sliding window before the Zynga OA?+
Longest Substring Without Repeating Characters uses it, but it's a medium problem and only one instance in the data. Solid sliding-window chops help, but it's not the bottleneck. Arrays and stacks are the priority.
What if I forget the monotonic stack pattern during the real assessment?+
Monotonic stack only shows up in Largest Rectangle, and it's hard. If you hit a wall and can't recall the deque trick, you're blocked cold on that problem. That's exactly when StealthCoder surfaces a solution invisibly, so you move on or grab partial credit instead of timing out.