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Snapchat Master DSA Sheet

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

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Course Schedule II
Medium
Best Meeting Point6 Months
Hard
Meeting Rooms II3 Months
Medium
Snapshot Array
Medium
Open the Lock6 Months
Medium
Min Stack
Medium
Reverse Linked List
Easy
Unique Binary Search Trees
Medium
Largest Merge Of Two Strings
Medium
Search Suggestions System
Medium
Bricks Falling When Hit
Hard
Longest Substring Without Repeating Characters
Medium
Word Abbreviation
Hard
Least Operators to Express Number
Hard
Product of Array Except Self
Medium
Ternary Expression Parser
Medium
K Closest Points to Origin
Medium
Merge Intervals
Medium
Alien Dictionary
Hard
Koko Eating Bananas3 Months
Medium
Task Scheduler
Medium
Basic Calculator III3 Months
Hard
Find All Anagrams in a String
Medium
One Edit Distance
Medium
Maximum Swap
Medium
Minimum Area Rectangle3 Months
Medium
Minimum Window Substring6 Months
Hard
Random Pick with Weight
Medium
Basic Calculator II6 Months
Medium
Number of Ways to Form a Target String Given a Dictionary
Hard
Wildcard Matching
Hard
Valid Sudoku
Medium
Game of Life
Medium
Remove K Digits
Medium
Reverse Words in a String
Medium
Bus Routes
Hard
Shortest Path in Binary Matrix
Medium
Number of Islands30 Days
Medium
Word Search II
Hard
Insert Delete GetRandom O(1)
Medium
Sliding Window Median6 Months
Hard
Search in Rotated Sorted Array
Medium
Edit Distance
Medium
Search a 2D Matrix II
Medium
Frog Jump
Hard
Course Schedule
Medium
LFU Cache
Hard
Reaching Points
Hard
Word Ladder
Hard
Escape the Spreading Fire3 Months
Hard
String Compression
Medium
Combination Sum
Medium
Basic Calculator
Hard
Making A Large Island
Hard
Add Binary
Easy
Minimum Number of Keypresses
Medium
LRU Cache
Medium
Burst Balloons
Hard
Group Anagrams
Medium
Binary Tree Maximum Path Sum
Hard
Design Log Storage System
Medium
Word Break II
Hard
Letter Combinations of a Phone Number
Medium
The Maze
Medium
Top K Frequent Elements3 Months
Medium
Design Add and Search Words Data Structure
Medium
UTF-8 Validation
Medium
Minimum Remove to Make Valid Parentheses6 Months
Medium
Reconstruct Itinerary
Hard
Median of Two Sorted Arrays
Hard
Reorder List
Medium
Word Search
Medium
Best Time to Buy and Sell Stock
Easy
Minimum Time to Complete All Tasks
Hard
Count Unreachable Pairs of Nodes in an Undirected Graph6 Months
Medium
Decode Ways
Medium
Minimum Path Sum
Medium
Score of Parentheses
Medium
Evaluate Division6 Months
Medium
Sudoku Solver
Hard
Cheapest Flights Within K Stops
Medium
Valid Arrangement of Pairs
Hard
Combination Sum II
Medium
Best Time to Buy and Sell Stock III
Hard
Number of Distinct Islands
Medium
Design Browser History
Medium
Number of Submatrices That Sum to Target
Hard
Minimum Number of Pushes to Type Word I
Easy
Power of Two6 Months
Easy
Car Fleet
Medium
Amount of Time for Binary Tree to Be Infected
Medium
Closest Binary Search Tree Value
Easy
Binary Tree Vertical Order Traversal
Medium
Shortest Path in a Grid with Obstacles Elimination
Hard
Combination Sum IV
Medium
Possible Bipartition
Medium
Accounts Merge
Medium
Custom Sort String
Medium
Design a Text Editor
Hard