PrepFlow
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ATS Checker
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DSA Sheets
Compiler
PrepFlow
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Companies
Doordash
Hash Table
Hash Table
0/21 solved
Two Sum
EASY
LRU Cache
MEDIUM
Group Anagrams
MEDIUM
Top K Frequent Elements
MEDIUM
Implement Trie (Prefix Tree)
MEDIUM
Valid Sudoku
MEDIUM
Task Scheduler
MEDIUM
Sudoku Solver
HARD
Vertical Order Traversal of a Binary Tree
HARD
LFU Cache
HARD
Binary Tree Vertical Order Traversal
MEDIUM
Sliding Window Median
HARD
Buddy Strings
EASY
Minimum Number of Steps to Make Two Strings Anagram
MEDIUM
Design In-Memory File System
HARD
Check if One String Swap Can Make Strings Equal
EASY
Minimize Malware Spread
HARD
Design File System
MEDIUM
Task Scheduler II
MEDIUM
Analyze User Website Visit Pattern
MEDIUM
Implement Trie II (Prefix Tree)
MEDIUM