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Jane Street LeetCode Questions 2026

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

Last updated: 20 Feb 2026

ProblemDifficultyFrequencyTopics
Longest Common PrefixEASY
62.5%
ArrayStringTrie
Stream of CharactersHARD
62.5%
ArrayStringDesignTrieData Stream
Add Two IntegersEASY
62.5%
Math
Minimum Time to Make Array Sum At Most xHARD
100%
ArrayDynamic ProgrammingSorting
Walking Robot SimulationMEDIUM
100%
ArrayHash TableSimulation
Count Common Words With One OccurrenceEASY
100%
ArrayHash TableStringCounting
Add StringsEASY
62.5%
MathStringSimulation
Design a Text EditorHARD
62.5%
Linked ListStringStackDesignSimulationDoubly-Linked List
Teemo AttackingEASY
62.5%
ArraySimulation
Valid ParenthesesEASY
62.5%
StringStack
LRU CacheMEDIUM
62.5%
Hash TableLinked ListDesignDoubly-Linked List
Two SumEASY
62.5%
ArrayHash Table
Number of Orders in the BacklogMEDIUM
62.5%
ArrayHeap (Priority Queue)Simulation

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