NVIDIA Coding & Algorithms Interview Questions

NVIDIA Coding & Algorithms interview questions focus on classical algorithmic skill delivered with an engineering lens tuned to performance. Expect problems on arrays, strings, graphs, trees, hashing, heaps, dynamic programming and bit manipulation, but often with constraints that mirror production needs: tight time and memory budgets, in-place or streaming solutions, and follow-ups that push for lower constants or parallel/vectorized approaches. Interviews evaluate problem decomposition, algorithmic correctness, complexity reasoning, clean and maintainable code, and the ability to explain trade-offs — plus, for many roles, an awareness of hardware and memory behavior that affects real-world performance. Typical loops begin with an online assessment or phone screen and move to multiple timed coding rounds that blend whiteboard-style design, live coding and scenario-driven follow-ups. For effective interview preparation, practice medium-to-hard problems under time limits, master core patterns and data structures in your primary language, rehearse clear verbal explanations, and simulate follow-ups that tighten constraints or require memory-efficient implementations. Pair practice with mock interviews and targeted drills on vectorization and low-level performance when applying to hardware- or ML-adjacent teams.

34 Questions 1 Company07.16.2026
Showing 14 results
Role
NVIDIA logo
NVIDIA
Medium
Software Engineer

Reconstruct tree from inorder and postorder

Given two arrays representing the inorder and postorder traversals of a binary tree with unique values, reconstruct the original binary tree and retur...

Coding & Algorithms
8
0
57 people solved
Jul 29, 2025
NVIDIA logo
NVIDIA
Hard
Software EngineerSenior+

Determine Whether One Point Can Reach Another

Determine Whether One Point Can Reach Another You start at a point (sx, sy) with positive integer coordinates. From (x, y), one move may transform the...

Coding & Algorithms
1
0
21 people solved
Jul 16, 2026
NVIDIA logo
NVIDIA
Hard
Software EngineerSenior+

Count Substrings with No Repeated Characters

Count Substrings with No Repeated Characters Given a lowercase English string s, return the number of nonempty contiguous substrings whose characters ...

Coding & Algorithms
1
0
22 people solved
Jul 16, 2026
NVIDIA logo
NVIDIA
Medium
Data EngineerSenior+

Merge Overlapping Time Intervals

You are given a list of closed time intervals. Each interval is represented as [start, end], where start <= end. Write a function that returns the sma...

Coding & Algorithms
0
0
6 people solved
May 3, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

Implement a disk space manager with eviction

Design and implement an in-memory disk space manager that stores datasets by datasetId with a given size (e.g., in MB). The manager has a fixed total ...

Coding & Algorithms
6
0
79 people solved
Mar 1, 2026
NVIDIA logo
NVIDIA
Easy
Software Engineer

Implement encode/decode for list of strings

You are given a list of strings (may include digits and symbols). Implement two methods: - encode(List<String> input) -> String: converts the list int...

Coding & Algorithms
4
0
81 people solved
Feb 11, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

Implement matrix transpose and KV store

The phone screen for a Linux-oriented software engineering role included multiple coding tasks: 1. Transpose an n x n matrix Given a square matri...

Coding & Algorithms
4
0
42 people solved
Feb 9, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer Locked

Solve small string and API tasks

This question evaluates proficiency in string algorithms (bracket validation and longest non-repeating substring) and practical API skills including H...

Coding & Algorithms
10
0
136 people solved
Feb 9, 2026
NVIDIA logo
NVIDIA
Easy
Software Engineer

Find the nth prime number

Given an integer n (1-indexed), return the n-th prime number (e.g., n=1 -> 2, n=2 -> 3, n=3 -> 5). Design an algorithm that is efficient for moderatel...

Coding & Algorithms
5
0
104 people solved
Feb 6, 2026
NVIDIA logo
NVIDIA
Medium
Software EngineerSenior+ Locked

Compute top-N items from log stream

This question evaluates the ability to aggregate frequencies and compute top-N results from logs, covering competencies in frequency counting, top-k a...

Coding & Algorithms
2
0
33 people solved
Jan 6, 2026
NVIDIA logo
NVIDIA
Medium
Software Engineer

Find all unique triplets summing to zero

Problem Given an integer array nums, return all unique triplets [nums[i], nums[j], nums[k]] such that: - i, j, and k are distinct indices (i != j != k...

Coding & Algorithms
5
0
47 people solved
Oct 23, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Design algorithms for test scheduling

Design algorithms for test scheduling You have tens of thousands of graphics test cases with inter-test dependencies and hardware/driver constraints. ...

Coding & Algorithms
4
0
71 people solved
Aug 9, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Apply sliding window techniques

Apply sliding window techniques Explain the sliding window technique and apply it to solve: ( 1) Given an array of positive integers and a target S, r...

Coding & Algorithms
9
0
97 people solved
Aug 7, 2025
NVIDIA logo
NVIDIA
Medium
Software Engineer

Find Top K Frequent Elements

Question LeetCode 347. Top K Frequent Elements – given an integer array nums, return the k most frequent elements. Initial requirement: return the top...

Coding & Algorithms
5
0
19 people solved
Jul 29, 2025

Frequently Asked Questions

How difficult are NVIDIA Coding & Algorithms interviews?
NVIDIA Coding & Algorithms interviews are generally challenging and competitive; difficulty typically ranges from medium to hard, especially for software and systems roles. Interviewers expect clear algorithmic thinking, correct implementations, and attention to complexity and memory use. For roles close to hardware, performance and parallelization questions add an extra layer of difficulty. Candidates who can quickly produce a correct brute force, explain trade-offs, and then optimize while communicating clearly tend to do well. Expect time pressure in 45–60 minute rounds and follow-ups that probe edge cases, robustness, and efficiency.
When and where do Coding & Algorithms questions appear during the NVIDIA interview loop?
Coding & Algorithms questions appear across multiple stages of the NVIDIA process. Early technical screens or online assessments usually include one or two coding problems to verify fundamentals. Successful candidates move to longer technical interviews or a virtual onsite loop where coding rounds are paired with system design, domain-specific technical questions, and behavioral interviews. For GPU, parallel computing, or ML-adjacent roles you may see additional performance and memory-layout questions during later rounds. Throughout, expect interviewers to assess problem-solving approach, code clarity, and complexity analysis rather than only a final solution.
How should I schedule my preparation timeline for NVIDIA Coding & Algorithms?
A focused 6–8 week timeline works well for most candidates. Start with two weeks consolidating fundamentals: arrays, strings, trees, graphs, hashing, and complexity analysis. Spend the next two to three weeks solving medium-to-hard problems across topics and practicing language-specific idioms and data structures. Reserve one to two weeks for concurrency, performance reasoning, and any GPU- or systems-related patterns required by the role. In the final week, do timed mock interviews, review common pitfalls, and rehearse explaining solutions aloud. Daily consistency, targeted problem selection, and mock-interview feedback are key.
What subtopics within Coding & Algorithms should I master for NVIDIA interviews?
Master core algorithmic areas: arrays and strings, hashing, two pointers, sorting and searching, trees and graphs, dynamic programming, greedy and divide-and-conquer strategies, and bit manipulation. Equally important is algorithm analysis for time and space complexity and producing robust edge-case handling. For NVIDIA roles that touch systems or hardware, understand memory layout, cache-aware algorithms, parallel reductions, and concurrency primitives. Finally, be comfortable implementing and explaining efficient data structures, iterating from brute force to optimized solutions, and writing clean, testable code in your primary language.
What are standout tips and common pitfalls to avoid in NVIDIA Coding & Algorithms interviews?
Standout tips include clarifying constraints and examples before coding, communicating your approach step by step, writing a correct brute-force solution then optimizing, and validating with edge cases. Practice coding in a shared editor or on a whiteboard to mirror interview conditions. Common pitfalls are failing to ask about input sizes and memory limits, skipping complexity discussion, ignoring integer overflow or null/empty inputs, and delivering messy or unreadable code. For performance-focused roles, avoid premature micro-optimizations and be ready to discuss trade-offs between memory, latency, and parallelism.

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