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Tesla LeetCode Questions 2026

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

Last updated: 20 Feb 2026

Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Longest Substring Without Repeating Characters	MEDIUM	87.5%	Hash TableStringSliding Window
Container With Most Water	MEDIUM	62.5%	ArrayTwo PointersGreedy
Letter Combinations of a Phone Number	MEDIUM	75%	Hash TableStringBacktracking
3Sum	MEDIUM	62.5%	ArrayTwo PointersSorting
Valid Parentheses	EASY	87.5%	StringStack
Reverse Nodes in k-Group	HARD	50%	Linked ListRecursion
Best Time to Buy and Sell Stock	EASY	87.5%	ArrayDynamic Programming
LRU Cache	MEDIUM	87.5%	Hash TableLinked ListDesignDoubly-Linked List
Number of Islands	MEDIUM	87.5%	ArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix
Basic Calculator II	MEDIUM	87.5%	MathStringStack
Move Zeroes	EASY	50%	ArrayTwo Pointers
Serialize and Deserialize Binary Tree	HARD	50%	StringTreeDepth-First SearchBreadth-First SearchDesignBinary Tree
Flatten Nested List Iterator	MEDIUM	50%	StackTreeDepth-First SearchDesignQueueIterator
Top K Frequent Elements	MEDIUM	75%	ArrayHash TableDivide and ConquerSortingHeap (Priority Queue)Bucket SortCountingQuickselect
Design Tic-Tac-Toe	MEDIUM	50%	ArrayHash TableDesignMatrixSimulation
Decode the Message	EASY	50%	Hash TableString
Max Area of Island	MEDIUM	50%	ArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix
Reorganize String	MEDIUM	75%	Hash TableStringGreedySortingHeap (Priority Queue)Counting
Find Followers Count	EASY	100%	Database
Design Circular Queue	MEDIUM	87.5%	ArrayLinked ListDesignQueue

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