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Twitter Master DSA Sheet

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

top-specifictwitter-prep
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Count Student Number in Departments
Medium
Binary Gap
Easy
Tweet Counts Per Frequency
Medium
Minimum Number of Steps to Make Two Strings Anagram
Medium
Reverse Linked List
Easy
Number of Connected Components in an Undirected Graph
Medium
Kth Smallest Element in a Sorted Matrix
Medium
Validate IP Address
Medium
Tree Node
Medium
Invalid Tweets
Easy
Permutation Sequence
Hard
Design Skiplist
Hard
Design Authentication Manager
Medium
Masking Personal Information
Medium
Best Meeting Point
Hard
Minimum Elements to Add to Form a Given Sum
Medium
Process Tasks Using Servers
Medium
Customer Placing the Largest Number of Orders
Easy
Flatten 2D Vector
Medium
Minimum Genetic Mutation
Medium
Finding the Users Active Minutes
Medium
Valid Parentheses
Easy
Rectangles Area
Medium
Investments in 2016
Medium
Merge Intervals
Medium
Trapping Rain Water
Hard
Alien Dictionary
Hard
Remove All Occurrences of a Substring
Medium
One Edit Distance
Medium
Random Pick with Weight
Medium
Wildcard Matching
Hard
Count Sub Islands
Medium
Regular Expression Matching
Hard
Number of Black Blocks
Medium
LRU Cache
Medium
The Skyline Problem
Hard
Trapping Rain Water II
Hard
Largest Plus Sign
Medium
Pascal's Triangle
Easy
Max Points on a Line
Hard
Insert Delete GetRandom O(1)
Medium
Rotting Oranges
Medium
Integer to Roman
Medium
Minimum Cost to Connect Sticks
Medium
Merge k Sorted Lists
Hard
Multiply Strings
Medium
Implement Trie (Prefix Tree)
Medium
Word Break II
Hard
Lowest Common Ancestor of a Binary Search Tree
Medium
Time Needed to Buy Tickets
Easy
Happy Number
Easy
Flatten Nested List Iterator
Medium
Design Twitter
Medium