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Datadog LeetCode Questions 2026

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

Last updated: 20 Feb 2026

Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Maximum Depth of N-ary Tree	EASY	87.5%	TreeDepth-First SearchBreadth-First Search
Valid Word Abbreviation	EASY	87.5%	Two PointersString
Maximum Vacation Days	HARD	75%	ArrayDynamic ProgrammingMatrix
Coin Change	MEDIUM	100%	ArrayDynamic ProgrammingBreadth-First Search
Design Circular Queue	MEDIUM	87.5%	ArrayLinked ListDesignQueue
Sliding Window Median	HARD	75%	ArrayHash TableSliding WindowHeap (Priority Queue)
Binary Tree Maximum Path Sum	HARD	50%	Dynamic ProgrammingTreeDepth-First SearchBinary Tree
Check If It Is a Straight Line	EASY	50%	ArrayMathGeometry
Most Common Word	EASY	100%	ArrayHash TableStringCounting
Binary Search Tree to Greater Sum Tree	MEDIUM	50%	TreeDepth-First SearchBinary Search TreeBinary Tree
People Whose List of Favorite Companies Is Not a Subset of Another List	MEDIUM	75%	ArrayHash TableString
Design Add and Search Words Data Structure	MEDIUM	87.5%	StringDepth-First SearchDesignTrie
Meeting Scheduler	MEDIUM	87.5%	ArrayTwo PointersSorting
House Robber II	MEDIUM	50%	ArrayDynamic Programming
House Robber	MEDIUM	62.5%	ArrayDynamic Programming
Path Sum	EASY	50%	TreeDepth-First SearchBreadth-First SearchBinary Tree

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