Summary

• Introduction
• Two-pointer Technique
• Recursion
• Dynamic Programming
• Order_Traversal
• Detection Cycle in an Undirected Graph
• Common Bit Tasks: Getting and Setting
• LeetCode Problems
  • Array_and_String
    • (Yahoo)4. Median of Two Sorted Array
    • (Yahoo)13. Roman to Integer
    • 26. Remove Duplicates from Sorted Array
    • (Yahoo)139. Word Break
    • 140. Word Break ii
    • 151. Reverse words in a string
    • 167. Two Sum 2 - Input array is sorted
    • 186. Reverse words in a string 2
    • 189. Rotated Array(Not Finished)
    • (Yahoo)217.Contains Duplicates
    • 243. Shortest Word Distance
    • 442. Find All Duplicates in an Array
    • 412. Fizz Buzz
  • Tree
    • 94. Binary Tree In-order Traversal
    • (Yahoo)104. Maximum Depth of Binary Tree
    • 111. Minimum Depth of binary tree
    • 144. Binary Tree Preorder Traversal
    • 145. Binary Tree Postorder Traversal
    • 226. Invert Binary Tree
    • 298. Binary Tree Longest Consecutive Path
  • Graph
    • 133. Clone Graph
    • 261. Graph Valid Tree
    • 310. Minimum Height Trees
    • 323. Number of Connected Components in an Undirected Graph
    • 332. Reconstruct Itinerary
    • 399. Evaluate Division (Need Review)
  • Linked_List
    • (Yahoo)141. Linked List Cycle
    • (Yahoo)142. Linked List Cycle II
    • (Yahoo)206. Reverse Linked List
  • Topological Sort
    • 444. Sequence Reconstruction
    • 210. Course Schedule II
  • Sort
    • 75. Sort Colors
    • 147. Insertion Sort List
    • 148. Sort List
    • 164. Maximum Gap
    • 179. Largest Number
    • 215. Kth Largest Element in the Array
    • 242. Valid Anagram
    • 252. Meeting Rooms (not finished)
    • 280. Wiggle Sort
    • 324. Wiggle Sort II (Not Finished)
    • 349. Intersection of Two Arrays
    • 350. Intersection of Two Arrays II
    • 253. Meeting Rooms (not finished)
  • Searching
    • 438. Find All Anagrams in a String (not finished)
  • BFS
    • 286. Walls and Gates
  • BackTracking
    • 425. Word Sqaures
  • DFS
    • 101. Symmetric Tree
    • 339. Nested List Weight Sum
  • Dynamic Programing
    • 70. Climbing Stairs
    • 121. Best Time Buy and Sell Stocks
    • 198. House Robber
    • 213.House Robber II
    • 276. Paint Fence
    • 338. Counting Bits
  • Bit Manipulation
    • 461. Hamming Distance
    • 371. Sum of Two Integers
  • Design
    • (Ya\/Go)284. Peeking Iterator
• Cracking Coding Interview
  • Chapter1. Arrays and Strings
    • 1.1 Is Unique
    • 1.2 Check Permutation
    • 1.3 URLify
    • 1.4 Palindrome Permutation
    • 1.5 One Away
    • 1.6 String Compression
    • 1.7 Rotate Matrix
    • 1.8\/LC 78 Zero Matrix (Not Finished)
    • 1.9 String Rotation
  • Chapter2. Linked List
    • 2.1 Remove Duplicates
    • 2.2 Return Kth to Last
    • 2.3 Delete Middle Node
    • 2.4 Partition
    • 2.5 Sum List
    • 2.6 Palindrome (Recursion not Done)
    • 2.7 Intersection
    • 2.8 Loop Detection
  • Chapter4. Trees and Graph
    • 4.1\/LintCode176.Route between two nodes
    • 4.2\/LC108. Minimal Tree
    • 4.3\/LC166 List of Depths
    • 4.4\/LC110 Check Balanced Tree
    • 4.5\/LC98 Valid BST
    • 4.6\/LC285 Inorder Successor in BST
    • 4.7 Build Order (LC210 Course Schedule II)
    • 4.8 First Common Ancestor (Not Finished)
    • 4.9 BST Sequences
    • 4.10 Check Subtree
  • Chapter8. Recursion and Dynamic Programming
    • 8.1 Triple Step
    • 8.2 Robot in a Grid
    • 8.3 Magic Index
    • 8.4\/LC78 Power Set (Subsets)
    • 8.5 Recursive Multiply
    • 8.6 Towers of Hanoi (OOD not finished)
    • 8.7 Permutation w\/o. Dups
    • 8.8 Permutation with Duplicates
    • 8.9\/LC22 Parens
    • 8.10 Paint Fill
    • 8.11 Coins
    • 8.12 Eight Queens
    • 8.13 Stack of boxes
  • Chapter10. Sorting and Searching
    • 10.1\/ LC88 Merge Sorted Array
    • 10.2\/ LC49 Group Anagrams
    • 10.3\/LC33. Search in Rotated Array
    • 10.3\/LC81. Search in Rotated Array with duplicates
    • 10.4 Sorted Search, No sizes
    • 10.5 Sparse Search
    • 10.6 Sort Big File (External Sorting)
    • 10.7 Missing int (Not finished)
    • 10.8 Find Duplicates (Not finished) Bit
    • 10.9 Sorted Matrix Search
• Interview Prep
  • miangjing
    • Remove 0 sum subtree
    • Diff of 2 Lists
    • BST Print As Sorted Array
    • Merge K Sorted Arrays
    • Flip Game 2 (没看懂)
    • Shortest Paths of Knights
    • LC31. Next Permutation
    • LC31.Next Permutation
    • LC46. Permutations
    • LC56.Merge Intervals
    • LC65.Valid Number
    • LC77.Combination
    • LC80.Remove Duplicates from Sorted Array 2
    • LC249.Group Shifted Strings
    • LC293.Flip Game
    • LC297.Serialize and Deserialize Binary Tree
    • LC316.Remove Duplicate Letters
    • LC322.Coin Change
    • LC346.Moving Average from Data Stream
    • LC352.Data Stream as Disjoint Intervals
    • LC356.Line Reflection
    • LC394.Decoding String
    • LC425.Word Square
    • Combination of Sets
  • Onsite Mianjing
    • 1.Longest Consecutive Path in BT
  • LC GOOGLE
    • Array
      • 15.3 Sum
      • 259. 3Sum Smaller
      • 163. Missing Ranges
      • 228. Summary Ranges
      • 289. Game of Life (2nd followup)
      • 370. Range Addition
      • 373. Find K pairs with Smallest Sums
      • 406. Queue Reconstruction by Height
      • 448. Find All Numbers Disappeared in an Array
    • Hash Table
      • 246. Strobogrammatic Number
      • 249. Group Shifted Strings
      • 266. Palindrome Permutation
      • 288. Unique Word Abbreviation (Design)
      • 340.Longest Substring with At Most K Distinct Characters
      • 359. Logger Rate Limiter (!!)
      • 389. Find the Difference
      • 409. Longest Palindrome
      • 447. Number of Boomerangs
      • 340.Longest Substring with At Most K Distinct Characters
    • String
      • 20. Valid Parentheses
      • 271. Encode and Decode Strings
      • 293. Flip Game
      • 408. Valid Word Abbreviation
      • 459. Repeated Substring Pattern
    • Math & Bit
      • 66. Plus One (Recursion)
      • 231. Power of Two
      • 313. Super Ugly Number (Not Finished)
      • 397. Integer Replacement
      • 400. Nth Digit
      • 415. Add Strings
    • Rescursion
      • 247. Strobogrammatic Number II
      • 248. Strobogrammatic Number III
      • 317. Shortest Distance from All Buildings
    • Design
      • Stack
        • 155. Min Stack
        • 341. (Not Finished) Flatten Nested List Iterator
      • Queue
        • 346. Moving Average from Data Stream
      • 208. Implement Trie (Prefix Tree)
      • 284. Peeking Iterator
    • Back Tracking
      • Back Tracking Model
      • 17. Letter Combinations of a Phone Number
      • 320. Generalized Abbreviation (Need Go Through Again!)
      • 401. Binary Watch
      • 422. Valid Word Square
      • 425. Word Squares
    • Binary Search
      • 374. Guess Number Higher or Lower
      • 475. Heaters
    • Tree
      • 298. Binary Tree Longest Consecutive Sequence
      • DFS
        • 257. Binary Tree Paths
        • 270. Closest Binary Search Tree Value
    • Dynamic Programming
      • 276. Paint Fence
      • 368. Largest Divisible Subset
      • 375. Guess Number Higher or Lower ii
      • 418. Sentence Screen Fitting (Need Review)
      • 474. Ones and Zeros
      • 309 Best Time to Buy and Sell Stocks with Cooldown
  • Eng Residency Program
    • Maximum Sum with Constrains
    • Counting Number of 1 Bits in an Integer
• Note