QUESTIONS BY COMPANY

Nielsen LeetCode Questions 2026

Browse LeetCode problems frequently asked by Nielsen. Filter by difficulty and timeframe to focus your interview prep.

Last updated: 20 Feb 2026

ProblemDifficultyFrequencyTopics
Merge IntervalsMEDIUM
75%
ArraySorting
Group AnagramsMEDIUM
87.5%
ArrayHash TableStringSorting
Edit DistanceMEDIUM
75%
StringDynamic Programming
Longest Palindromic SubstringMEDIUM
100%
Two PointersStringDynamic Programming
Best Time to Buy and Sell Stock IVHARD
75%
ArrayDynamic Programming
Two SumEASY
75%
ArrayHash Table
Longest Valid ParenthesesHARD
75%
StringDynamic ProgrammingStack
Multiply StringsMEDIUM
87.5%
MathStringSimulation
Jump GameMEDIUM
75%
ArrayDynamic ProgrammingGreedy

Need Help Solving These Problems?

CodingInterviewAI can instantly identify algorithms and generate optimal solutions for any LeetCode problem. Get step-by-step explanations and ace your next technical interview.

CodingInterviewAI logo

© 2026 CodingInterviewAI. All rights reserved

CodingInterviewAI

HomeBlogGive Feedback