Design

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# Title Acceptance Difficulty
460 LFU Cache 21.0% Hard
432 All O`one Data Structure 27.4% Hard
381 Insert Delete GetRandom O(1) - Duplicates allowed 28.3% Hard
380 Insert Delete GetRandom O(1) 38.7% Medium
379 Design Phone Directory 30.5% Medium
362 Design Hit Counter 53.0% Medium
359 Logger Rate Limiter 58.4% Easy
355 Design Twitter 24.9% Medium
353 Design Snake Game 25.8% Medium
348 Design Tic-Tac-Toe 45.4% Medium
346 Moving Average from Data Stream 57.7% Easy
341 Flatten Nested List Iterator 39.4% Medium
297 Serialize and Deserialize Binary Tree 32.1% Hard
295 Find Median from Data Stream 24.1% Hard
288 Unique Word Abbreviation 15.7% Medium
284 Peeking Iterator 35.2% Medium
281 Zigzag Iterator 49.0% Medium
251 Flatten 2D Vector 39.3% Medium
244 Shortest Word Distance II 35.2% Medium
232 Implement Queue using Stacks 35.3% Easy
225 Implement Stack using Queues 31.4% Easy
211 Add and Search Word - Data structure design 20.7% Medium
208 Implement Trie (Prefix Tree) 26.2% Medium
173 Binary Search Tree Iterator 39.6% Medium
170 Two Sum III - Data structure design 23.1% Easy
155 Min Stack 26.8% Easy
146 LRU Cache 16.4% Hard
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