Rubrik coding interview
questions, leaked.
36 problems reported across recent Rubrik interviews. Top patterns: array, math, hash table. The list below is what most reported candidates actually saw, plus the honest play if you can't grind all of it.
Rubrik's coding interview hits you with 36 problems across a brutal distribution: 13 hard, 21 medium, and only 2 easy. Arrays dominate at 19 problems, followed by math (10) and hash-tables (9). You're looking at a median interview weighted toward medium-hard algorithm and design work, heavy on arrays and greedy patterns. The gap between easy and medium is severe, so you won't warm up. If you blank on a greedy-array problem mid-assessment, StealthCoder surfaces a working solution in seconds, invisible to the proctor.
Top problems at Rubrik
| # | Problem | Diff | Frequency | Pass % | Patterns |
|---|---|---|---|---|---|
| 01 | Maximum Points After Enemy Battles | MEDIUM | 100.0 | 33% | Array · Greedy |
| 02 | Stamping the Grid | HARD | 67.8 | 33% | Array · Greedy · Matrix |
| 03 | LRU Cache | MEDIUM | 62.6 | 45% | Hash Table · Linked List · Design |
| 04 | Count Lattice Points Inside a Circle | MEDIUM | 62.6 | 55% | Array · Hash Table · Math |
| 05 | Candy Crush | MEDIUM | 62.6 | 77% | Array · Two Pointers · Matrix |
| 06 | Random Pick with Weight | MEDIUM | 62.6 | 48% | Array · Math · Binary Search |
| 07 | Alice and Bob Playing Flower Game | MEDIUM | 62.6 | 46% | Math |
| 08 | Find X Value of Array II | HARD | 61.0 | 27% | Array · Math · Segment Tree |
| 09 | Find X Value of Array I | MEDIUM | 61.0 | 33% | Array · Math · Dynamic Programming |
| 10 | Maximize Subarray Sum After Removing All Occurrences of One Element | HARD | 61.0 | 20% | Array · Dynamic Programming · Segment Tree |
| 11 | Manhattan Distances of All Arrangements of Pieces | HARD | 61.0 | 33% | Math · Combinatorics |
| 12 | Find Longest Special Substring That Occurs Thrice II | MEDIUM | 61.0 | 38% | Hash Table · String · Binary Search |
| 13 | Distribute Candies Among Children II | MEDIUM | 61.0 | 56% | Math · Combinatorics · Enumeration |
| 14 | Distribute Candies Among Children III | HARD | 61.0 | 58% | Math · Combinatorics |
| 15 | Find the Sum of Subsequence Powers | HARD | 61.0 | 23% | Array · Dynamic Programming · Sorting |
| 16 | Existence of a Substring in a String and Its Reverse | EASY | 61.0 | 66% | Hash Table · String |
| 17 | Distribute Candies Among Children I | EASY | 61.0 | 75% | Math · Combinatorics · Enumeration |
| 18 | Insert Delete GetRandom O(1) | MEDIUM | 52.3 | 55% | Array · Hash Table · Math |
| 19 | Next Permutation | MEDIUM | 49.2 | 43% | Array · Two Pointers |
| 20 | Snapshot Array | MEDIUM | 49.2 | 37% | Array · Hash Table · Binary Search |
| 21 | Scramble String | HARD | 49.2 | 42% | String · Dynamic Programming |
| 22 | Web Crawler Multithreaded | MEDIUM | 49.2 | 50% | Depth-First Search · Breadth-First Search · Concurrency |
| 23 | Design Add and Search Words Data Structure | MEDIUM | 45.5 | 47% | String · Depth-First Search · Design |
| 24 | Web Crawler | MEDIUM | 40.6 | 69% | String · Depth-First Search · Breadth-First Search |
| 25 | Edit Distance | MEDIUM | 40.6 | 59% | String · Dynamic Programming |
| 26 | Design a Text Editor | HARD | 40.6 | 47% | Linked List · String · Stack |
| 27 | Task Scheduler | MEDIUM | 40.6 | 62% | Array · Hash Table · Greedy |
| 28 | Sliding Window Maximum | HARD | 40.6 | 48% | Array · Queue · Sliding Window |
| 29 | Design Memory Allocator | MEDIUM | 33.8 | 48% | Array · Hash Table · Design |
| 30 | Design Bounded Blocking Queue | MEDIUM | 33.8 | 73% | Concurrency |
| 31 | Cherry Pickup II | HARD | 33.8 | 72% | Array · Dynamic Programming · Matrix |
| 32 | Minimum Number of Refueling Stops | HARD | 33.8 | 41% | Array · Dynamic Programming · Greedy |
| 33 | Remove Invalid Parentheses | HARD | 33.8 | 49% | String · Backtracking · Breadth-First Search |
| 34 | 4Sum | MEDIUM | 33.8 | 38% | Array · Two Pointers · Sorting |
| 35 | Building H2O | MEDIUM | 33.8 | 58% | Concurrency |
| 36 | Prefix and Suffix Search | HARD | 33.8 | 40% | 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 Rubrik OA. The proctor cannot see it. Screen share cannot detect it. Built by a senior engineer who knows the OA is theater. This is the script.
Get StealthCoder- array19 · 53%
- math10 · 28%
- hash table9 · 25%
- string9 · 25%
- dynamic programming7 · 19%
- design7 · 19%
- combinatorics4 · 11%
- greedy4 · 11%
- two pointers3 · 8%
- binary search3 · 8%
Arrays and math are non-negotiable. Nineteen array problems means you'll see rotation, prefix sums, matrix traversal, and greedy optimization. Math problems cluster around combinatorics and geometry (candies, lattice points, arrangements). Hash-tables appear in 9 problems, almost always paired with arrays or design. Design (LRU Cache, system modeling) shows up in 7 problems and breaks candidates who haven't built from scratch. Dynamic programming appears in 7 problems, often combined with arrays. The hard tier (13 problems) includes segment trees, complex DP, and combinatorial math. Drill arrays and greedy first, then pivot to math and design. StealthCoder is your hedge for the live assessment when you hit a hard DP or combinatorics problem you haven't rehearsed.
Companies with similar patterns
If you prepped for Rubrik, these companies recycle ~60% of the same topics.
You've seen the list.
Now make sure you pass Rubrik.
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 a senior engineer who knows the OA is theater. This is the script. Works on HackerRank, CodeSignal, CoderPad, and Karat.
Rubrik interview FAQ
How many array problems should I solve before the interview?+
Array appears in 19 of 36 problems. Solve every array problem you can find, prioritizing greedy optimization (stamping, max points, subarray removal). Work prefix-sum and matrix variants hard. You need to be reflexive on array transformations.
Should I study design patterns for Rubrik?+
Yes. Design problems appear in 7 of 36 problems, and LRU Cache is a top reported question. System design (caching, data structures) is part of their interview. Budget time for doubly-linked-list implementations and hash-table optimization.
Is math heavy enough to prioritize over DP?+
Math is heavy (10 problems), and combinatorics (4 problems) clusters in the hard tier. But dynamic programming (7 problems) often combines with arrays and math. Study both equally. Combinatorics and lattice geometry are less common in typical prep, so drill those last.
How do I prepare for 13 hard problems in one assessment?+
You don't solve all hard problems. Focus on understanding hard patterns they report: segment trees in array problems, combinatorial math, and complex DP. Know when to apply binary search on answers. Accept that you'll hit unknowns, and that's why preparation targets medium-hard confidence.
What's the minimum viable prep for a Rubrik OA?+
Solve all 21 medium problems if you can, focusing on arrays (greedy, prefix sum), math, and LRU Cache. Get comfortable with the 7 design problems. The 13 hard problems are a hedge. If you're solid on medium, you'll score.