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Coding & Algorithms Interview Questions

Practice 9403 coding, system design and machine learning questions from 546 companies, sorted by role, topic and interview round. Every question has step-by-step hints, a code runner that supports 8 languages and an AI mentor; members also get the full solution walkthrough.

9403
Questions: 546
Companies: 11
Topics: 8
Languages

Showing 421–427 of 427 results

Walmart LabsMediumSoftware Engineer
Minimize Cost for Feature-Capable Models
This problem tests your ability to use greedy strategies or dynamic programming to satisfy coverage constraints while minimizing total costs from a set of available items.
Coding & AlgorithmsOnline AssessmentGreedyOptimizationCombinatorics
Walmart LabsMediumSoftware Engineer
Minimize the Maximum Edge on a Path
Find a path in a weighted undirected graph that minimizes its largest edge rather than the sum of weights. Handle parallel edges, disconnected vertices, and the start-equals-target case efficiently at large graph scale.
Coding & AlgorithmsOnline Assessment
WaymoMediumData Scientist
Implement Safe Average Function
This question evaluates proficiency with basic programming fundamentals including numeric computation, handling edge cases such as empty inputs, input immutability, and data type consistency.
Coding & AlgorithmsOnline Assessment
WeRideMediumSoftware Engineer
Validate Bracket Sequence
This problem tests the ability to manage nested structures using a stack to ensure that all opening brackets are closed in the correct order and type.
Coding & AlgorithmsOnline AssessmentStackStringData Structures
WhatnotEasySoftware Engineer
Count User Journey Prefixes
Process timestamped user activity logs to reconstruct chronological action sequences and count the frequency of user journey prefixes up to length k.
Coding & AlgorithmsOnline Assessmenthash-mapsortingstrings
WorldquantMediumSoftware Engineer
Count Unordered Combinations of Unlimited Coins
Count distinct ways to reach a target with unlimited coins, treating different orders of the same denominations as one combination.
Coding & AlgorithmsOnline Assessment
eBayMediumSoftware Engineer
Implement an In-Memory File System
This problem tests proficiency with hierarchical data structures (trees/tries) and object-oriented design by requiring the implementation of an in-memory file system with file/directory management and path resolution.
Coding & AlgorithmsOnline AssessmentTreesTrieDesign