Catalog:[骨骼清奇]LC 692 Top K Frequent Words[骨骼清奇]LC 347 Top K Frequent Element[Uber]414Th...
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Kth and Top k
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Tree Basics
BST: all left <= n < all right How to determine if a binary tree is height-balanced?An ...
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LC化元歸一
Catalog:[Uber] LC 49 Group Anagram [Uber] LC 49 Group Anagram把相同字母排列不同的單詞放在一起，返回list of...
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非LC面筋
[G]帶expiration的hashmap,實現(xiàn)add_task, get_task(if expired, delete)和clean_up如果expiration對于所...
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Binary Search
[Uber]LC 34 Find First and Last Position of Element in Sorted Array找一個target 在排序數(shù)組中出現(xiàn)多少...
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Stack真題
骨骼清奇：LC 394 Decode String LC 844 Backspace String CompareLC 341 Flatten Nested List ...
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Tree真題
[骨骼清奇]n-array tree, 給一個node 算出包括這個node在內(nèi)的所有child的sum[骨骼清奇]n-array tree，給一個node 打印出從這nod...
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LC Trie
Catalog:LC 745 [Prefix and Suffix Search]LC 676 [Implement Magic Dictionary]LC 208 Impl...
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LC Two Pointers
[Uber]Trapping rain water [基本功]將arr左側(cè)分為小于等于pv=arr[0]，右側(cè)為大于pv！ [蟈蟈電面]LC 31 Next Permutat...
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骨骼清奇DFS
Notes: Implement DFS 的時候，有幾種情況.（1）在條件滿足的base case下return 1，這樣層層收集起來，也可以在那里update全局變量，比如...
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骨骼清奇Fit words
Catalog:LC 68 Text Justification[GoogleCall] LC 418 Sentence Screen Fitting LC 68 Tex...
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亞麻
find kth smallest element in an unsorted array問了鏈表，一個三連環(huán)的題目；又問了一個雙數(shù)組，雙對沖指針的題目。(他們組做的是分布...
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骨骼清奇Optimization
Catalog:LC 857 Minimum Cost to Hire K Workers LC 857 Minimum Cost to Hire K WorkersOur ...
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骨骼清奇Sort Property
Catalog:LC 855 Exam Room Notes:When you sort a dictionary, you are sorting based on key...
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骨骼清奇Word Games
Catalog:LC 890 Find and Replace PatternLC 843 Guess the WordLC 299 Bulls and CowsLC 676...
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DP真題
骨骼清奇:LC 62LC 337 House Robber III LC 486 Predict the Winner LC 312 Burst Balloons ...
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骨骼清奇Other
LC 849 Maximize Distance to Closest PersonLC 334 Increasing Triplet Subsequence LC 215...
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骨骼清奇BFS+DSU
Catalog:LC 三九九 Evaluate DivisionLC 六八四 六八五及其變種（Tree刪除額外邊）LC 803 Bricks Falling When Hit...
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DB Design
Database for airport Airlines table: IDs and names of the airlines Flight table: trip (...
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Mutex/Locks Implementation
Most mutual exclusion and synchronization mechanisms use hardware atomic operations. Ho...