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Turing LeetCode Questions 2026

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

Last updated: 20 Feb 2026

Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Minimum Cost For Tickets	MEDIUM	87.5%	ArrayDynamic Programming
Longest Substring Without Repeating Characters	MEDIUM	100%	Hash TableStringSliding Window
Regular Expression Matching	HARD	50%	StringDynamic ProgrammingRecursion
Longest Common Prefix	EASY	75%	ArrayStringTrie
Find the Town Judge	EASY	50%	ArrayHash TableGraph Theory
Valid Parentheses	EASY	87.5%	StringStack
Maximum Subarray	MEDIUM	62.5%	ArrayDivide and ConquerDynamic Programming
Merge Intervals	MEDIUM	62.5%	ArraySorting
Find Duplicate File in System	MEDIUM	50%	ArrayHash TableString
Baseball Game	EASY	87.5%	ArrayStackSimulation
Consecutive Numbers	MEDIUM	50%	Database
Degree of an Array	EASY	50%	ArrayHash Table
Number of Islands	MEDIUM	50%	ArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix
Product of Array Except Self	MEDIUM	62.5%	ArrayPrefix Sum
Validate IP Address	MEDIUM	87.5%	String
Longest Palindromic Substring	MEDIUM	62.5%	Two PointersStringDynamic Programming
Maximum Repeating Substring	EASY	50%	StringDynamic ProgrammingString Matching
Partition Array Into Three Parts With Equal Sum	EASY	62.5%	ArrayGreedy
Koko Eating Bananas	MEDIUM	75%	ArrayBinary Search
Kth Largest Element in an Array	MEDIUM	50%	ArrayDivide and ConquerSortingHeap (Priority Queue)Quickselect

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