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Companies
Amazon
Design
Design
0/46 solved
LRU Cache
MEDIUM
Min Stack
MEDIUM
Find Median from Data Stream
HARD
Implement Trie (Prefix Tree)
MEDIUM
Serialize and Deserialize Binary Tree
HARD
Insert Delete GetRandom O(1)
MEDIUM
Binary Search Tree Iterator
MEDIUM
Implement Queue using Stacks
EASY
Design Add and Search Words Data Structure
MEDIUM
Online Stock Span
MEDIUM
Implement Stack using Queues
EASY
Kth Largest Element in a Stream
EASY
LFU Cache
HARD
Design HashMap
EASY
Range Sum Query 2D - Immutable
MEDIUM
Flatten Nested List Iterator
MEDIUM
Maximum Frequency Stack
HARD
My Calendar I
MEDIUM
Design Twitter
MEDIUM
Design Circular Queue
MEDIUM
Serialize and Deserialize BST
MEDIUM
Design Linked List
MEDIUM
Prefix and Suffix Search
HARD
Design a Stack With Increment Operation
MEDIUM
Design Search Autocomplete System
HARD
Design Tic-Tac-Toe
MEDIUM
All O`one Data Structure
HARD
Design Hit Counter
MEDIUM
Encode and Decode TinyURL
MEDIUM
Design Parking System
EASY
Max Stack
HARD
Peeking Iterator
MEDIUM
Logger Rate Limiter
EASY
Moving Average from Data Stream
EASY
Design Circular Deque
MEDIUM
Range Module
HARD
Design In-Memory File System
HARD
Iterator for Combination
MEDIUM
Shortest Word Distance II
MEDIUM
Design Snake Game
MEDIUM
Design Front Middle Back Queue
MEDIUM
Design File System
MEDIUM
First Unique Number
MEDIUM
Design an Expression Tree With Evaluate Function
MEDIUM
Design Compressed String Iterator
EASY
Throne Inheritance
MEDIUM