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HRT LeetCode Questions 2026

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

Last updated: 10 July 2026

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ProblemDifficultyFrequencyTopics
Add Edges to Make Degrees of All Nodes EvenHARD
100%
Hash TableGraph Theory
Longest Path With Different Adjacent CharactersHARD
100%
ArrayStringTreeDepth-First SearchGraph TheoryTopological Sort
Maximum Total Importance of RoadsMEDIUM
100%
GreedyGraph TheorySortingHeap (Priority Queue)
Detect Pattern of Length M Repeated K or More TimesEASY
100%
ArrayEnumeration
Convert Integer to the Sum of Two No-Zero IntegersEASY
100%
Math
Number of Steps to Reduce a Number to ZeroEASY
100%
MathBit Manipulation
Maximum 69 NumberEASY
100%
MathGreedy
Maximum Score From Grid OperationsHARD
100%
ArrayDynamic ProgrammingMatrixPrefix Sum
Longest Common PrefixEASY
62.5%
ArrayStringTrie

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