Design

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# Title Acceptance Difficulty
588 Design In-Memory File System 31.3% Hard
460 LFU Cache 22.7% Hard
432 All O`one Data Structure 27.4% Hard
381 Insert Delete GetRandom O(1) - Duplicates allowed 28.6% Hard
380 Insert Delete GetRandom O(1) 38.9% Medium
379 Design Phone Directory 31.6% Medium
362 Design Hit Counter 53.4% Medium
359 Logger Rate Limiter 59.1% Easy
355 Design Twitter 25.1% Medium
353 Design Snake Game 26.1% Medium
348 Design Tic-Tac-Toe 45.8% Medium
346 Moving Average from Data Stream 58.2% Easy
341 Flatten Nested List Iterator 40.6% Medium
297 Serialize and Deserialize Binary Tree 32.8% Hard
295 Find Median from Data Stream 25.4% Hard
288 Unique Word Abbreviation 16.2% Medium
284 Peeking Iterator 35.3% Medium
281 Zigzag Iterator 49.7% Medium
251 Flatten 2D Vector 39.9% Medium
244 Shortest Word Distance II 36.5% Medium
232 Implement Queue using Stacks 36.1% Easy
225 Implement Stack using Queues 32.3% Easy
211 Add and Search Word - Data structure design 21.7% Medium
208 Implement Trie (Prefix Tree) 27.2% Medium
173 Binary Search Tree Iterator 40.5% Medium
170 Two Sum III - Data structure design 23.8% Easy
155 Min Stack 27.8% Easy
146 LRU Cache 17.1% Hard
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