coding
Medium
Verified
Find Optimal Commute
Category: Grid/matrix coding problemYou are given a 2D grid representing a city map. Each cell contains one of the following: -
'S' -- your starting location - 'D' -- your...Input: 2D gridOutput: Computed result
coding
Hard
Verified
IP CIDR Firewall
Category: String coding problemAn IP address is a 32-bit number written as four decimal octets separated by dots, such as
10.0.0.1. A CIDR block is written as base_ip/k, which...Input: ListOutput: Computed result
coding
Medium
Verified
Bottleneck Dependencies
Category: Graph coding problemYou are managing a build pipeline for a software project. The pipeline contains
n components labeled 0 to n-1, connected by prerequisite...Input: Graph (nodes and edges)Output: Computed result
coding
Hard
Verified
Circuit Breaker
Category: Array coding problemIn a distributed system, a circuit breaker mechanism shields backend servers from cascading failures. When a server encounters a streak of...Input: Array
Output: Computed result
coding
Medium
Verified
Encode And Decode
Category: Array coding problemImplement an encoder and decoder for integer arrays using two compression techniques: Run-Length Encoding (RLE) and Bit Packing (BP).Input: Array of integers
Output: Computed result
coding
Medium
Verified
Customer Revenue System
Category: Algorithm coding problemDesign a customer revenue tracking system that supports direct sign-ups and referral-based registration. Each customer has a unique auto-incrementing...Input: List
Output: Array
coding
Medium
Verified
Design Lazy Array
Category: Array coding problemGiven an integer array, a list of multipliers, and a target value, determine the first index in the array whose element equals the target after all...Input: Array
Output: Computed result
coding
Hard
Verified
Find Path in Fibonacci Tree
Category: Binary tree coding problemA Fibonacci tree of order
n is a binary tree defined as follows: - A tree of order 0 is a single node. - A tree of order 1 is a single node.Input: Binary treeOutput: Computed result
coding
Hard
Verified
Snapshot Set Iterator
Category: Algorithm coding problemDesign a data structure called
SnapshotSet that supports adding and removing integers, membership checks, and capturing immutable snapshots of the...Input: ListOutput: Computed result
coding
Medium
Verified
Remove Covered Point
Category: Interval-based coding problemA warehouse uses a shelving system where each shelf occupies a contiguous range of slot positions
[start, end) (the end position is exclusive --...Input: ListOutput: Computed result
coding
Medium
Verified
Tic-Tac-Toe II
Category: Algorithm coding problemDesign a generalized Tic-Tac-Toe game played on an
n x m board where the first player to place k consecutive marks in a row, column, or diagonal...Input: Number(s)Output: Computed result
system design
Hard
Verified
Top Databricks System Design Questions
Category: Linked list system design problem# System Design Questions - Databricks These are commonly asked system design questions from Databricks interviews. Updated March 2026.Input: Linked list
Output: Computed result
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