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DoorDash LeetCode Questions 2026

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

Last updated: 20 May 2026

Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Two Sum	EASY	50%	ArrayHash Table
Interval List Intersections	MEDIUM	50%	ArrayTwo PointersSweep Line
Vertical Order Traversal of a Binary Tree	HARD	50%	Hash TableTreeDepth-First SearchBreadth-First SearchSortingBinary Tree
Next Permutation	MEDIUM	50%	ArrayTwo Pointers
Sudoku Solver	HARD	37.5%	ArrayHash TableBacktrackingMatrix
Jump Game II	MEDIUM	25%	ArrayDynamic ProgrammingGreedy
Jump Game	MEDIUM	37.5%	ArrayDynamic ProgrammingGreedy
Largest Rectangle in Histogram	HARD	50%	ArrayStackMonotonic Stack
Design File System	MEDIUM	75%	Hash TableStringDesignTrie
Binary Tree Maximum Path Sum	HARD	87.5%	Dynamic ProgrammingTreeDepth-First SearchBinary Tree
Count Nodes With the Highest Score	MEDIUM	62.5%	ArrayTreeDepth-First SearchBinary Tree
Maximum Path Quality of a Graph	HARD	25%	ArrayBacktrackingGraph Theory
LRU Cache	MEDIUM	37.5%	Hash TableLinked ListDesignDoubly-Linked List
Maximum Gap	MEDIUM	25%	ArraySortingBucket SortRadix Sort
Number of Islands	MEDIUM	37.5%	ArrayDepth-First SearchBreadth-First SearchUnion-FindMatrix
Implement Trie (Prefix Tree)	MEDIUM	50%	Hash TableStringDesignTrie
Course Schedule II	MEDIUM	50%	Depth-First SearchBreadth-First SearchGraph TheoryTopological Sort
Design Add and Search Words Data Structure	MEDIUM	25%	StringDepth-First SearchDesignTrie
Word Search II	HARD	37.5%	ArrayStringBacktrackingTrieMatrix
Basic Calculator	HARD	50%	MathStringStackRecursion

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