Blind 75

Concept-ordered progression with Blind sequence retained inside each concept.

Solved: 0 / 75 Coverage: 71/75

1. Arrays & Hashing

B#1 medium 1. Two Sum B#3 easy 217. Contains Duplicate B#4 medium 238. Product of Array Except Self B#31 medium 128. Longest Consecutive Sequence B#53 easy 242. Valid Anagram B#54 medium 49. Group Anagrams B#74 medium 347. Top K Frequent Elements

2. Two Pointers

B#9 medium 15. 3Sum B#10 medium 11. Container With Most Water B#56 easy 125. Valid Palindrome

3. Sliding Window

B#2 easy 121. Best Time to Buy and Sell Stock B#50 medium 3. Longest Substring Without Repeating Characters B#51 medium 424. Longest Repeating Character Replacement B#52 hard 76. Minimum Window Substring

4. Stack

B#55 easy 20. Valid Parentheses

5. Binary Search

B#7 medium 153. Find Minimum in Rotated Sorted Array B#8 medium 33. Search in Rotated Sorted Array

6. Linked List

B#40 easy 206. Reverse Linked List B#41 easy 141. Linked List Cycle B#42 easy 21. Merge Two Sorted Lists B#43 hard 23. Merge k Sorted Lists B#44 medium 19. Remove Nth Node From End of List B#45 medium 143. Reorder List

7. Trees

B#60 easy 104. Maximum Depth of Binary Tree B#61 easy 100. Same Tree B#62 easy 226. Invert Binary Tree B#63 hard 124. Binary Tree Maximum Path Sum B#66 easy 572. Subtree of Another Tree B#67 medium 105. Construct Binary Tree from Preorder and Inorder Traversal B#68 medium 98. Validate Binary Search Tree B#69 medium 230. Kth Smallest Element in a BST B#70 easy 235. Lowest Common Ancestor of a Binary Search Tree

8. Intervals

B#35 medium 57. Insert Interval B#36 medium 56. Merge Intervals B#38 easy 252. Meeting Rooms B#39 medium 253. Meeting Rooms II

9. Bit Manipulation

B#11 medium 371. Sum of Two Integers B#12 easy 191. Number of 1 Bits B#14 easy 268. Missing Number B#15 easy 190. Reverse Bits

10. Dynamic Programming

B#5 medium 53. Maximum Subarray B#6 medium 152. Maximum Product Subarray B#13 easy 338. Counting Bits B#16 easy 70. Climbing Stairs B#17 medium 322. Coin Change B#18 medium 300. Longest Increasing Subsequence B#19 medium 1143. Longest Common Subsequence B#20 medium 139. Word Break B#21 medium 377. Combination Sum IV B#22 medium 198. House Robber B#23 medium 213. House Robber II B#24 medium 91. Decode Ways B#25 medium 62. Unique Paths B#57 medium 5. Longest Palindromic Substring B#58 medium 647. Palindromic Substrings

11. Greedy

B#26 medium 55. Jump Game

12. Math & Geometry

B#46 medium 73. Set Matrix Zeroes B#48 medium 48. Rotate Image

13. Math & Geometry - Simulation

B#47 medium 54. Spiral Matrix

14. Backtracking / DFS

B#49 medium 79. Word Search

15. Trees / BFS

B#64 medium 102. Binary Tree Level Order Traversal

16. Graphs / DFS

B#27 medium 133. Clone Graph B#29 medium 417. Pacific Atlantic Water Flow B#30 medium 200. Number of Islands

17. Graphs / Topological Sort

B#28 medium 207. Course Schedule

18. Tries - Prefix Tree

B#71 medium 208. Implement Trie (Prefix Tree)

19. Trie / Data Structure Design

B#72 medium 211. Design Add and Search Words Data Structure

20. Backtracking / Trie

B#73 hard 212. Word Search II

21. Graphs / Trees

B#33 hard 261. Graph Valid Tree

22. Blind 75

B#32 todo Alien Dictionary
B#34 todo Number of Connected Components in an Undirected Graph
B#59 todo Encode and Decode Strings
B#75 todo Find Median from Data Stream

23. Trees / DFS

B#65 hard 297. Serialize and Deserialize Binary Tree

24. Intervals / Greedy

B#37 medium 435. Non-overlapping Intervals