NVIDIA interview questions

Derive MLP shapes and explain PyTorch broadcasting

Companies: NVIDIA

Design a scalable URL shortening service like Bitly

Companies: NVIDIA

Design Circular Queue

Implement a fixed-size circular queue (ring buffer) supporting enqueue, dequeue, Front/Rear, isEmpty and isFull operations without using built-in queue types. The core…

Companies: NVIDIA

Array · Design · Linked List · Queue

Diagnose overfitting, DenseNet, preprocessing, CV

Companies: NVIDIA

Difference between Thread vs process

Explain the difference between thread and process

Companies: NVIDIA, Databricks, LinkedIn

Explain bias-variance, calibration, and model drift

Companies: NVIDIA

ML Fundamentals · Model Monitoring & Drift

Explain your research paper on computer vision algorithm for heart rate detection.

Companies: NVIDIA

Find First and Last Position of Element in Sorted Array

Given a sorted (non-decreasing) array, return the starting and ending indices of a target value (or [-1, -1] if it’s not present). The challenge is…

Companies: NVIDIA, Amazon, Apple, Meta +3

Array · Binary Search

First question: describe something you worked on. Second question: model a ticket reservation system for a cinema.

First question: describe something you worked on. Second question: model a ticket reservation system for a cinema.

Companies: NVIDIA

Given an array nums and a sliding window of size k moving from the very left to the very right, return the maximum value in the window for each position. Solve in O(n) time using a deque.

Given an array nums and a sliding window of size k moving from the very left to the very right, return the maximum value in…

Companies: NVIDIA

GPU programming concepts and parallel programing

Companies: NVIDIA

Group Anagrams

Group the input strings into lists of anagrams — i.e., strings that contain the same multiset of letters — and return the groups in any…

Companies: NVIDIA, Amazon, Apple, Arize Ai +14

Array · Hash Table · Sorting · String

How LLM training data is sourced, labeled and quality-checked at each training stage

Companies: NVIDIA

AI Product Management · Annotation & Label Quality

How model training work and training parallel method

Companies: NVIDIA

Implement MoE and show the dimensions

Companies: NVIDIA

Koko Eating Bananas

Find the minimum integer eating speed k such that the total hours required (sum over piles of ceil(piles[i]/k)) is ≤ h; because the required hours…

Companies: NVIDIA, Amazon, Bloomberg, Coupang +6

Array · Binary Search

Leetcode questions: group of anagrams, find median in array.

Companies: NVIDIA

Leetcode, Group Anagram. solve using hashmap.

Companies: NVIDIA

Linked List Cycle

Companies: NVIDIA, Amazon

Floyd's Cycle Finding Algorithm · Hash Table · Linked List · Two Pointers

Longest Substring Without Repeating Characters

Find the length of the longest contiguous substring that contains no repeated characters. This is a classic sliding-window / two-pointer problem where you track seen…

Companies: NVIDIA, Amazon, Apple, Autodesk +12

Hash Table · Sliding Window · String

LRU Cache

Implement an LRUCache that supports O(1) average-time get(key) returning the value or -1 and put(key, value) which inserts or updates a key and, if capacity…

Companies: NVIDIA, Adobe, Amazon, Anthropic +29

Data Structure Design · Design · Doubly-Linked List · Hash Table