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4,878 questions

Showing 526–550

CodingEasyLeetCode 202
Happy Number
Determine whether iterating n -> sum of the squares of its digits eventually reaches 1 or falls into a repeating cycle; the core task is…
Companies: Snowflake
Floyd's Cycle Finding Algorithm · Hash Table · Math · Two Pointers
Last reported May 2026
Open workspace
CodingHard
Implement Persistent Memoization LRU Cache
Companies: Anthropic
Data Structure Design · Parsing & Interpreters
Last reported May 2026
Open workspace
CodingDifficulty not specifiedLeetCode 1057
Campus Bikes
Given positions of workers and bikes on a 2D grid, assign each worker a distinct bike to minimize the total Manhattan distance (return the bike…

Page 22 of 196

Interview questions by company and topic | SysRound

Companies: Oracle

Last reported May 2026

CodingDifficulty not specifiedLeetCode 2290

Minimum Obstacle Removal to Reach Corner

Find the minimum number of obstacles (cells with value 1) you must remove to get from the top-left to the bottom-right of an m×n grid…

Companies: Salesforce

Last reported May 2026

CodingDifficulty not specifiedLeetCode 339

Nested List Weight Sum

Given a nested list of integers and sublists, compute the total sum where each integer is multiplied by its depth in the nesting. The challenge…

Companies: Meta, Roblox

Last reported May 2026

CodingMediumLeetCode 763

Partition Labels

Partition the string into the maximum number of contiguous parts such that each letter appears in at most one part, and return the sizes of…

Companies: SoFi

Last reported May 2026

CodingEasyLeetCode 2215

Find the Difference of Two Arrays

Return two lists containing the distinct integers that appear in nums1 but not in nums2, and that appear in nums2 but not in nums1 —…

Companies: Google

Last reported May 2026

CodingDifficulty not specifiedLeetCode 2452

Words Within Two Edits of Dictionary

Given equal-length lowercase words, return all queries that can be turned into some dictionary word with at most two letter substitutions — equivalently, whose Hamming…

Companies: Google

Last reported May 2026

CodingDifficulty not specifiedLeetCode 1244

Design A Leaderboard

Design a data structure that supports addScore(playerId, score), reset(playerId), and top(K) which returns the sum of the top K players' scores; the core challenge is…

Companies: Microsoft, Uber, Yahoo

Last reported May 2026

CodingDifficulty not specifiedLeetCode 1506

Find Root of N-Ary Tree

Given an unordered list of all nodes of an N-ary tree (nodes have children pointers but no parent pointers), identify the root — the single…

Companies: Google

Last reported May 2026

CodingMedium

Fix a Corrupted Bootloader Instruction

Companies: Anthropic

Simulation & State Machines

Last reported May 2026

CodingDifficulty not specified

Generate an Image of Rendered Text from a Supplied Font and Text Content

Create a service that generates an image of rendered text using a supplied font and text content.

Companies: Canva

Last reported May 2026

CodingDifficulty not specifiedLeetCode 3453

Separate Squares I

Given axis-aligned squares (xi, yi, li) whose overlaps count multiply, find the smallest horizontal line y such that the sum of areas of all squares…

Companies: Amazon, Google

Last reported May 2026

CodingHardLeetCode 127

Word Ladder

Find the length of the shortest transformation sequence from beginWord to endWord where each step changes exactly one letter and every intermediate word must be…

Companies: Amazon, Apple, Fan, Meta +5

Bidirectional Search · Breadth-First Search · Hash Table · String

Last reported May 2026

CodingMediumLeetCode 36

Valid Sudoku

Check a 9x9 Sudoku board is valid by verifying that no digit 1–9 (ignoring '.') appears more than once in any row, column, or 3x3…

Companies: Amazon, Cisco, Microsoft

Array · Hash Table · Matrix

Last reported May 2026

CodingDifficulty not specifiedLeetCode 41

First Missing Positive

Find the smallest positive integer missing from an unsorted array while meeting O(n) time and O(1) extra space. The classic approach uses in-place index-based placement…

Companies: Lyft

Last reported May 2026

CodingHard4 levels

Implement a Time-Aware Task Manager

Implement a task manager that supports named tasks, priorities, user quotas, and expiring assignments. Preserve assignment history so later operations can identify overdue work.

Companies: Airbnb, Anthropic

CodeSignal · Progressive Assessment · State Machines

Last reported May 2026

CodingHard

Implement a Simplified DNS Resolver

Companies: Anthropic

Concurrency · Data Structure Design

Last reported May 2026

CodingMedium

Implement Task Management and Duplicate Detection

Companies: Anthropic

Last reported May 2026

CodingMediumLeetCode 2622

Cache With Time Limit

Design a time-limited key-value store with set(key, value, duration) that returns true if it overwrote an unexpired key (false otherwise), get(key) returning the value or…

Companies: Amazon, Netflix

Last reported May 2026

CodingDifficulty not specifiedLeetCode 1386

Cinema Seat Allocation

Given n rows of 10 seats and a list of reserved seats, maximize the number of four-person groups that can be placed on adjacent seats…

Companies: Meta

Last reported May 2026

CodingDifficulty not specifiedLeetCode 2408

Design SQL

Given one or more relational tables and a target result set, write a SQL query that produces the specified output—typically requiring joins, grouping/aggregation, conditional…

Companies: OpenAI

Last reported May 2026

CodingHardLeetCode 2258

Escape the Spreading Fire

Given a grid with grass, fire, and impassable walls, determine the maximum minutes you can wait at (0,0) before starting to move so that you…

Companies: Google, Uber

Array · Binary Search · Breadth-First Search · Matrix

Last reported May 2026

CodingMediumLeetCode 1197

Minimum Knight Moves

Given target coordinates (x, y), find the minimum number of knight moves required to reach that square from (0,0) on an infinite chessboard. This is…

Companies: eBay, Google, LinkedIn, Meta +1

A* Search · Bidirectional Search · Breadth-First Search · Heuristic Search

Last reported May 2026

CodingHard

Implement a hierarchical file store

Companies: Anthropic

Last reported May 2026