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Sep 2022
155 Min Stack
Mar 2023
208 Implement Trie (Prefix Tree)
Mar 2023
341 Flatten Nested List Iterator
Feb 2023
353 Design Snake Game
Feb 2023
359 Logger Rate Limiter
Feb 2023
362 Design Hit Counter
Jan 2023
379 Design Phone Directory
Aug 2022
380 Insert Delete GetRandom O(1)
Sep 2022
381 Insert Delete GetRandom O(1) - Duplicates allowed
Sep 2022
460 LFU Cache
Sep 2022
489 Robot Room Cleaner
Sep 2022
535 Encode and Decode TinyURL
Sep 2022
588 Design In-Memory File System
May 2023
622 Design Circular Queue
Sep 2022
631 Design Excel Sum Formula
Sep 2022
642 Design Search Autocomplete System
Sep 2022
716 Max Stack
Mar 2021
1114 Print in Order
Sep 2022
1352 Product of the Last K Numbers
Sep 2022
1396 Design Underground System
Sep 2022
1429 First Unique Number
Sep 2022
1472 Design Browser History
Aug 2022
1603 Design Parking System
Sep 2022
1628 Design an Expression Tree With Evaluate Function
Sep 2022
1656 Design an Ordered Stream
Jan 2023
2034 Stock Price Fluctuation