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Snowflake LeetCode Questions 2026

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

Last updated: 20 Feb 2026

Timeframe

Difficulty

Problem	Difficulty	Frequency	Topics
Minimum Array Length After Pair Removals	MEDIUM	75%	ArrayHash TableTwo PointersBinary SearchGreedyCounting
Regular Expression Matching	HARD	62.5%	StringDynamic ProgrammingRecursion
Merge Two Sorted Lists	EASY	50%	Linked ListRecursion
Swap Nodes in Pairs	MEDIUM	50%	Linked ListRecursion
Reverse Nodes in k-Group	HARD	50%	Linked ListRecursion
Time Based Key-Value Store	MEDIUM	62.5%	Hash TableStringBinary SearchDesign
Boundary of Binary Tree	MEDIUM	62.5%	TreeDepth-First SearchBinary Tree
Design In-Memory File System	HARD	100%	Hash TableStringDesignTrieSorting
Populating Next Right Pointers in Each Node	MEDIUM	50%	Linked ListTreeDepth-First SearchBreadth-First SearchBinary Tree
Populating Next Right Pointers in Each Node II	MEDIUM	62.5%	Linked ListTreeDepth-First SearchBreadth-First SearchBinary Tree
Parallel Courses III	HARD	87.5%	ArrayDynamic ProgrammingGraph TheoryTopological Sort
LRU Cache	MEDIUM	62.5%	Hash TableLinked ListDesignDoubly-Linked List
Minimum Operations to Make Numbers Non-positive	HARD	37.5%	ArrayBinary Search
Happy Number	EASY	100%	Hash TableMathTwo Pointers
Number of Ways to Form a Target String Given a Dictionary	HARD	75%	ArrayStringDynamic Programming
Word Search II	HARD	87.5%	ArrayStringBacktrackingTrieMatrix
Course Schedule II	MEDIUM	100%	Depth-First SearchBreadth-First SearchGraph TheoryTopological Sort
Basic Calculator	HARD	75%	MathStringStackRecursion
Basic Calculator II	MEDIUM	50%	MathStringStack
Cherry Pickup	HARD	37.5%	ArrayDynamic ProgrammingMatrix

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