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Snowflake Master DSA Sheet

This compilation contains exclusive, previously asked data structure and algorithm questions from real Snowflake interviews. Focus on these core problem patterns to confidently tackle even the hardest interview challenges.

top-specificsnowflake-prep
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104
Graph Valid Tree30 Days
Course Schedule II30 Days
Jump Game II3 Months
Alert Using Same Key-Card Three or More Times in a One Hour Period
Longest Univalue Path
N-Queens II
Snapshot Array3 Months
Design HashMap3 Months
Meeting Rooms II
Min Stack
Time Based Key-Value Store
Maximum Number of Upgradable Servers
Painting the Walls3 Months
Trapping Rain Water6 Months
Shortest Word Distance30 Days
Remove Sub-Folders from the Filesystem
Encode and Decode Strings
Maximize Distance to Closest Person6 Months
Copy List with Random Pointer
Task Scheduler
Find the Maximum Length of a Good Subsequence I
Basic Calculator II
Calculate Amount Paid in Taxes
Minimum Array Length After Pair Removals
Random Pick with Weight
Minimum Window Substring
Maximum Profit in Job Scheduling3 Months
String Transformation
Throne Inheritance6 Months
Valid Sudoku
Parallel Courses III3 Months
Find All Anagrams in a String3 Months
My Calendar I
Regular Expression Matching
Find the Maximum Length of a Good Subsequence II
Number of Ways to Form a Target String Given a Dictionary6 Months
Container With Most Water
Insert Delete GetRandom O(1)
Basic Calculator
Non-overlapping Intervals
Rotting Oranges6 Months
Word Search II
Cherry Pickup
Design In-Memory File System6 Months
Course Schedule
Remove K Digits
Count Vowel Substrings of a String
Roman to Integer
Populating Next Right Pointers in Each Node II
Two Sum
Web Crawler Multithreaded3 Months
Single Element in a Sorted Array
Making A Large Island
LRU Cache
Design Circular Queue
Walls and Gates
Web Crawler3 Months
Path With Minimum Effort
N-Queens
Design Hit Counter6 Months
Design Add and Search Words Data Structure
Reverse Nodes in k-Group
Implement Trie (Prefix Tree)
Remove Invalid Parentheses
Simplify Path
Merge k Sorted Lists6 Months
Top K Frequent Elements3 Months
Merge Two Sorted Lists
Parallel Courses3 Months
The Maze6 Months
Add Two Numbers
Design Log Storage System
Best Time to Buy and Sell Stock
Leaf-Similar Trees
Word Search
Evaluate Division
Integer to English Words
Word Break
Design File System
Boundary of Binary Tree30 Days
Happy Number3 Months
Keys and Rooms3 Months
Populating Next Right Pointers in Each Node
Valid Word Abbreviation
Max Area of Island
Step-By-Step Directions From a Binary Tree Node to Another
Count Nodes Equal to Average of Subtree
Patching Array
Find Median from Data Stream
Paint Fence6 Months
Cheapest Flights Within K Stops6 Months
Most Profitable Path in a Tree
Maximum Number of Events That Can Be Attended
Reverse Only Letters
Maximum Number of Removable Characters
Campus Bikes
Minimum Operations to Make Numbers Non-positive
Height of Binary Tree After Subtree Removal Queries
Parallel Courses II6 Months
Maximum Number of Events That Can Be Attended II
Construct Binary Tree from Preorder and Inorder Traversal
Most Stones Removed with Same Row or Column
Boats to Save People
Swap Nodes in Pairs