PhantomCodeAIPhantomCodeAI
FeaturesMock InterviewDashboardJobsPricing
FeaturesMock InterviewDashboardJobsPricing
PhantomCodeAIPhantomCodeAI
FeaturesMock InterviewDashboardJobsPricing
FeaturesMock InterviewDashboardJobsPricing
HomeLeetCode ProblemsTrie

Trie Problems

45 Trie LeetCode problems · Solve with AI-powered hints & step-by-step explanations.

14Longest Common PrefixEasy139Word BreakMedium140Word Break IIHard208Implement Trie (Prefix Tree)Medium211Design Add and Search Words Data StructureMedium212Word Search IIHard336Palindrome PairsHard386Lexicographical NumbersMedium421Maximum XOR of Two Numbers in an ArrayMedium440K-th Smallest in Lexicographical OrderHard472Concatenated WordsHard648Replace WordsMedium676Implement Magic DictionaryMedium677Map Sum PairsMedium692Top K Frequent WordsMedium720Longest Word in DictionaryMedium745Prefix and Suffix SearchHard792Number of Matching SubsequencesMedium820Short Encoding of WordsMedium1023Camelcase MatchingMedium1032Stream of CharactersHard1178Number of Valid Words for Each PuzzleHard1233Remove Sub-Folders from the FilesystemMedium1268Search Suggestions SystemMedium1316Distinct Echo SubstringsHard1707Maximum XOR With an Element From ArrayHard1803Count Pairs With XOR in a RangeHard1938Maximum Genetic Difference QueryHard1948Delete Duplicate Folders in SystemHard2227Encrypt and Decrypt StringsHard2261K Divisible Elements SubarraysMedium2416Sum of Prefix Scores of StringsHard2452Words Within Two Edits of DictionaryMedium2707Extra Characters in a StringMedium2932Maximum Strong Pair XOR IEasy2935Maximum Strong Pair XOR IIHard2977Minimum Cost to Convert String IIHard3042Count Prefix and Suffix Pairs IEasy3043Find the Length of the Longest Common PrefixMedium3045Count Prefix and Suffix Pairs IIHard3076Shortest Uncommon Substring in an ArrayMedium3093Longest Common Suffix QueriesHard3291Minimum Number of Valid Strings to Form Target IMedium3485Longest Common Prefix of K Strings After RemovalHard3597Partition String Medium
← Browse all LeetCode problems
PhantomCodeAIPhantomCodeAI
PhantomCodeAI is an undetectable desktop application to help you pass your Leetcode interviews.
All systems online
Download

Legal

Refund PolicyTerms of ServiceCancellation PolicyPrivacy Policy

Pages

Contact SupportHelp CenterInstant SupportFAQBlogFeaturesInterview CopilotCoding CopilotInterview QuestionsPricingMock Interview PricingEarn with UsBest AI Interview Assistants 2026FeedbackLeetcode ProblemsLoginCreate Account

Compare

All 29 comparisons →Why switch (29 alternatives) →Interview Coder AlternativeFinal Round AI AlternativeUltraCode AI AlternativeParakeet AI AlternativeAI Apply AlternativeCoderRank AlternativeInterviewing.io AlternativeShadeCoder Alternative

Resources

Salary GuideResume TemplatesWhat Is PhantomCodeAIIs PhantomCodeAI Detectable?Use PhantomCodeAI in HackerRankvs LeetCode PremiumFor European EngineersFor FAANG Interview PrepPost-Layoff ComebackIndia Pricing (INR)

Interview Types

Coding InterviewSystem Design InterviewDSA InterviewLeetCode InterviewAlgorithms InterviewData Structure InterviewSQL InterviewOnline Assessment

Interview Questions

See all →
GoogleAmazonMetaMicrosoftAppleNetflixStripeUberAirbnbBloombergSoftware EngineerFrontend EngineerBackend EngineerData EngineerML EngineerDevOps EngineerData ScientistEngineering ManagerBehavioralSystem Design

Mock Interview by Round Type

All formats →
Mock Interview HubMock Coding InterviewMock Behavioral InterviewMock System Design

AI for Industry Interviews

All industries →
Sales InterviewsPM InterviewsFinance InterviewsConsulting InterviewsDesign Interviews

Coding Interview Patterns

See all patterns →
Coding Interviews HubDynamic ProgrammingTwo Pointers + Sliding WindowGraph AlgorithmsTree AlgorithmsBinary Search

Interview Guides

See all guides →
How to Ace an InterviewHow to Crack InterviewsBest Interview AnswersScreening Interview QuestionsTelephone Interview TipsWorking Interview ExplainedCracking the PM InterviewFAANG 30-Day RoadmapTop 10 LeetCode PatternsSystem Design Prep GuideSTAR Behavioral MethodBehavioral Interview Qs

Alternatives — why engineers switch

See all 29 →
Interview CoderFinal Round AIParakeet AILockedIn AIUltraCode AIShadeCoderSensei AIVerve AICluelyChatGPTBeyz AIInterview SidekickYoodliAlgoMonsterCoderRankExponentFormationInterviewing.ioInterview CakeBig InterviewInterview KickstartPrampScalerAI ApplyCareerflowJobscanKickresumeTeal HQHireVue

AI Interview Tools

AI Interview AssistantAI Interview CoachAI for Job InterviewsAI Interview Preparation ToolReal-Time AI Interview AnswersInterview AI HelperReal-Time AI Interview AssistantAI Interview BotBest AI Interview Tools 2026AI Interview QuestionsPractice Interview QuestionsAI to Answer Interview QuestionsAI Phone Interview HelpAI Interviewing SoftwareAI Interview HubInterview CopilotAI Coding Interview AssistantMock Interview

© 2026 PhantomCodeAI. All rights reserved.