Interview questions

Find Minimum Time to Finish All Jobs

Partition the given job times into k worker workloads so that the maximum sum assigned to any worker is as small as possible — a…

Companies: NVIDIA, Snowflake

Last reported Jan 2026

Refactor a chat message processing function

Companies: OpenAI

Code Quality & Maintainability · JavaScript & TypeScript

Last reported Jan 2026

Paint House

Given an n×k cost matrix, choose a color for each house so that no two adjacent houses share the same color and the total painting…

Companies: LinkedIn

Last reported Jan 2026

The "Alien Dictionary" problem is a classic LeetCode question (specifically LeetCode Problem 269) that requires determining the alphabetical order of characters in a new language given a list of words sorted according to that language's rules. This is typically solved using graph theory and topological sorting (Kahn's algorithm or DFS).

The "Alien Dictionary" problem is a classic LeetCode question (specifically LeetCode Problem 269) that requires determining the alphabetical order of characters in a new…

Companies: OpenAI

Last reported Jan 2026

You are given an array of length n and variable k(size of window), return the index of the window with the max diff (max-min).

Companies: NVIDIA

Last reported Jan 2026

you have a linked list , and you need to find out if there is a circle in it

Companies: NVIDIA

Last reported Jan 2026

Count Alien Pairs from Different Planets

Given N aliens and a list of pairs indicating which aliens live on the same planet, determine the number of ways to pick two aliens…

Companies: Google

Last reported Dec 2025

Goat Latin

Transform each word by leaving leading vowels but moving a leading consonant to the end, then append "ma" and an increasing number of 'a' characters…

Companies: Clio, Meta

Last reported Dec 2025

Implement Task Queue with Priority Management

Design and implement a task queue system that manages tasks with ID, priority, and command properties, supporting operations to add tasks, retrieve highest priority tasks…

Companies: Apple

Last reported Dec 2025

Advent of Code Day 7 Variation

Solve a modified version of Advent of Code Day 7 problem. Implement an algorithm to handle the specific requirements and constraints of this coding challenge.

Companies: OpenAI

Last reported Dec 2025

Daily Inventory Aggregation

Given a list of inventory items with positive and negative amounts across multiple days, calculate and return a dictionary containing the total amount for each…

Companies: C3 Ai

Last reported Dec 2025

Day of the Week

Given day, month, and year, determine which weekday that date falls on (one of Sunday–Saturday) by applying calendar arithmetic (e.g., Zeller's congruence) or a library…

Companies: Microsoft

Last reported Dec 2025

Design Snapshot Set

Design a data structure that supports taking snapshots of a set and querying the state of elements at specific snapshot versions. The structure should efficiently…

Companies: Databricks

Last reported Dec 2025

Task Assignment to Machines by Maximum Capacity

Given n machines with different capacities and m tasks, assign each task to the machine with the highest available capacity at that moment. Return the…

Companies: Microsoft

Last reported Dec 2025

Circular Array Loop

Given a circular array of nonzero integers where each value indicates how many steps to jump forward or backward, determine whether there exists a cycle…

Companies: Oscilar

Last reported Dec 2025

File System Block Storage: Parse Strings into 8-Character Blocks with Capacity Validation

Implement a file system that parses strings into 8-character blocks with validation for string length divisibility and maximum storage capacity. The system should reject…

Companies: Anchorage Digital

Last reported Dec 2025

Implement Alarm Clock

Design and implement a functional alarm clock system that can set, trigger, and manage multiple alarms with appropriate time handling.

Companies: Mastercard

Last reported Dec 2025

Minimum Operations to Set Alarm Time

Given a current alarm time and a target alarm time in HH:MM format, calculate the minimum number of scroll/shift operations needed to change the alarm…

Companies: Mastercard

Last reported Dec 2025

Priority-Based Job Scheduling System with String Grouping

Design a job management system that schedules and processes jobs with priority levels (HIGH, NORMAL, LOW), where each job contains a list of strings to…

Companies: Anchorage Digital

Last reported Dec 2025

Shortest Path in Binary Matrix

Given an n×n binary grid where 0s are open and 1s are blocked, return the length (number of cells) of the shortest 8-directionally connected path…

Companies: Amazon, Anduril, Meta

Array · Breadth-First Search · Matrix

Last reported Dec 2025

Multi Map Implementation

Implement a multi-map data structure that allows multiple values to be associated with a single key. The implementation should support basic operations like insert, retrieve…

Companies: Servicetitan

Last reported Dec 2025

Shortest Word Distance

Given a list of words and two distinct target words, find the minimum absolute index distance between any occurrence of the two targets. This is…

Companies: LinkedIn, Snowflake

Array · String

Last reported Dec 2025