2026.8/9月总文档

一, overall

• 包含blind75, lc75 在内的总700道题计划
• 要注意后期可能进展会比前期慢很多，软柿子都被捏完了

二，完成情况，文档，日志

2026.8.7

• 创建文档，初始化
• 注意某些题目只存在文件未完成，注意筛选

三，详细分组 phase 1

1. Array / Hash / Two Pointer

• 单子
  1, 15, 18, 36, 39, 40, 49, 73, 128, 152, 169, 189, 229, 442, 448, 560, 659, 670, 792, 846, 881, 905, 918

编号	名字	简评	链接	程度
1	Two Sum	秒，再不用管了	lc001	写过✅
15	3Sum		lc015	写过✅
18	4Sum
36	Valid Sudoku
39	Combination Sum		lc039	写过✅
40	Combination Sum II		lc040	写过✅
49	Group Anagrams
73	Set Matrix Zeroes
128	Longest Consecutive Sequence
152	Maximum Product Subarray
169	Majority Element
189	Rotate Array
229	Majority Element II
442	Find All Duplicates in an Array
448	Find All Numbers Disappeared in an Array
560	Subarray Sum Equals K
659	Split Array into Consecutive Subsequences
670	Maximum Swap
792	Number of Matching Subsequences
846	Hand of Straights
881	Boats to Save People
905	Sort Array By Parity
918	Maximum Sum Circular Subarray

2. Sliding Window

• 单子 3, 30, 76, 159, 209, 424, 438, 567, 713, 904, 930, 992, 1234, 1248, 1358

编号	名字	简评	链接	程度
3	Longest Substring Without Repeating Characters	需重写，需打磨	lc003	写过✅
30	Substring with Concatenation of All Words
76	Minimum Window Substring
159	Longest Substring with At Most Two Distinct Characters
209	Minimum Size Subarray Sum
424	Longest Repeating Character Replacement
438	Find All Anagrams in a String
567	Permutation in String
713	Subarray Product Less Than K
904	Fruit Into Baskets
930	Binary Subarrays With Sum
992	Subarrays with K Different Integers
1234	Replace the Substring for Balanced String
1248	Count Number of Nice Subarrays
1358	Number of Substrings Containing All Three Characters

3. Stack / Monotonic Stack

• 单子
  20, 84, 85, 150, 224, 227, 394, 402, 503, 581, 636, 678, 853, 901, 907, 962, 1019, 1124, 1475, 1856

编号	名字	简评	链接	程度
20	Valid Parentheses
84	Largest Rectangle in Histogram
85	Maximal Rectangle
150	Evaluate Reverse Polish Notation
224	Basic Calculator
227	Basic Calculator II
394	Decode String		lc394	写过✅
402	Remove K Digits
503	Next Greater Element II
581	Shortest Unsorted Continuous Subarray
636	Exclusive Time of Functions
678	Valid Parenthesis String
853	Car Fleet
901	Online Stock Span
907	Sum of Subarray Minimums
962	Maximum Width Ramp
1019	Next Greater Node In Linked List
1124	Longest Well-Performing Interval
1475	Final Prices With a Special Discount in a Shop
1856	Maximum Subarray Min-Product

4. Linked List

• 单子 2, 19, 21, 23, 24, 25, 61, 82, 83, 92, 138, 141, 142, 143, 148, 160, 203, 234, 328, 430

编号	名字	简评	链接	程度
2	Add Two Numbers
19	Remove Nth Node From End of List		lc019	写过✅
21	Merge Two Sorted Lists		lc021	写过✅
23	Merge k Sorted Lists
24	Swap Nodes in Pairs
25	Reverse Nodes in k-Group
61	Rotate List
82	Remove Duplicates from Sorted List II
83	Remove Duplicates from Sorted List
92	Reverse Linked List II
138	Copy List with Random Pointer
141	Linked List Cycle		lc141	写过✅
142	Linked List Cycle II
143	Reorder List
148	Sort List
160	Intersection of Two Linked Lists		lc160	写过✅
203	Remove Linked List Elements
234	Palindrome Linked List
328	Odd Even Linked List
430	Flatten a Multilevel Doubly Linked List

5. binary tree

• 单子 94, 98, 100, 101, 102, 105, 106, 108, 110, 111, 112, 113, 114, 129, 144, 145, 173, 222, 230, 257, 297, 337, 366, 404, 450, 508, 543, 617, 652, 654, 669, 701, 783, 814, 863, 865, 889, 958

编号	名字	简评	链接	程度
94	Binary Tree Inorder Traversal
98	Validate Binary Search Tree
100	Same Tree
101	Symmetric Tree
102	Binary Tree Level Order Traversal		lc102	写过✅
105	Construct Binary Tree from Preorder and Inorder Traversal
106	Construct Binary Tree from Inorder and Postorder Traversal
108	Convert Sorted Array to Binary Search Tree
110	Balanced Binary Tree
111	Minimum Depth of Binary Tree
112	Path Sum		lc112	写过✅
113	Path Sum II
114	Flatten Binary Tree to Linked List
129	Sum Root to Leaf Numbers		lc129	写过✅
144	Binary Tree Preorder Traversal
145	Binary Tree Postorder Traversal
173	Binary Search Tree Iterator
222	Count Complete Tree Nodes
230	Kth Smallest Element in a BST
257	Binary Tree Paths		lc257	写过✅
297	Serialize and Deserialize Binary Tree
337	House Robber III
366	Find Leaves of Binary Tree
404	Sum of Left Leaves
450	Delete Node in a BST
508	Most Frequent Subtree Sum
543	Diameter of Binary Tree
617	Merge Two Binary Trees
652	Find Duplicate Subtrees
654	Maximum Binary Tree
669	Trim a Binary Search Tree
701	Insert into a Binary Search Tree
783	Minimum Distance Between BST Nodes
814	Binary Tree Pruning
863	All Nodes Distance K in Binary Tree
865	Smallest Subtree with all the Deepest Nodes
889	Construct Binary Tree from Preorder and Postorder Traversal
958	Check Completeness of a Binary Tree

四，分组，phase 2 Graph / DFS / BFS / Union Find（约 170题）

• 单子 200, 207, 210, 261, 269, 286, 305, 310, 323, 332, 399, 417, 433, 490, 491, 529, 542, 547, 684, 695, 721, 733, 743, 752, 756, 765, 773, 778, 785, 797, 802, 815, 827, 834, 841, 847, 854, 863, 886, 909, 934, 947, 959, 980, 994, 1091, 1129, 1162, 1192, 1254, 1277, 1293, 1306, 1319, 1334, 1368, 1376, 1391, 1466, 1514, 1557, 1584, 1631, 1765, 1971, 2039, 2045, 2192, 2203, 2285, 2368

编号	名字	简评	链接	程度
200	Number of Islands
207	Course Schedule
210	Course Schedule II
261	Graph Valid Tree
269	Alien Dictionary
286	Walls and Gates
305	Number of Islands II
310	Minimum Height Trees
323	Number of Connected Components in an Undirected Graph
332	Reconstruct Itinerary
399	Evaluate Division
417	Pacific Atlantic Water Flow
433	Minimum Genetic Mutation
490	The Maze
491	Non-decreasing Subsequences
529	Minesweeper
542	01 Matrix
547	Number of Provinces
684	Redundant Connection
695	Max Area of Island
721	Accounts Merge
733	Flood Fill
743	Network Delay Time
752	Open the Lock
756	Pyramid Transition Matrix
765	Couples Holding Hands
773	Sliding Puzzle
778	Swim in Rising Water
785	Is Graph Bipartite?
797	All Paths From Source to Target
802	Find Eventual Safe States
815	Bus Routes
827	Making A Large Island
834	Sum of Distances in Tree
841	Keys and Rooms		lc841	写过✅
847	Shortest Path Visiting All Nodes
854	K-Similar Strings
863	All Nodes Distance K in Binary Tree
886	Possible Bipartition
909	Snakes and Ladders
934	Shortest Bridge
947	Most Stones Removed with Same Row or Column
959	Regions Cut By Slashes
980	Unique Paths III
994	Rotting Oranges		lc994	写过✅
1091	Shortest Path in Binary Matrix
1129	Shortest Path with Alternating Colors
1162	As Far from Land as Possible
1192	Critical Connections in a Network
1254	Number of Closed Islands
1277	Count Square Submatrices with All Ones
1293	Shortest Path in a Grid with Obstacles Elimination
1306	Jump Game III
1319	Number of Operations to Make Network Connected
1334	Find the City With the Smallest Number of Neighbors at a Threshold Distance
1368	Minimum Cost to Make at Least One Valid Path in a Grid
1376	Time Needed to Inform All Employees
1391	Check if There is a Valid Path in a Grid
1466	Reorder Routes to Make All Paths Lead to the City Zero
1514	Path with Maximum Probability
1557	Minimum Number of Vertices to Reach All Nodes
1584	Min Cost to Connect All Points
1631	Path With Minimum Effort
1765	Map of Highest Peak
1971	Find if Path Exists in Graph
2039	The Time When the Network Becomes Idle
2045	Second Minimum Time to Reach Destination
2192	All Ancestors of a Node in a Directed Acyclic Graph
2203	Minimum Weighted Subgraph With the Required Paths
2285	Maximum Total Importance of Roads
2368	Reachable Nodes With Restrictions

五，分组，phase 3 DP / Backtracking / Greedy

• 单子 22, 31, 46, 47, 51, 52, 77, 78, 79, 90, 91, 93, 95, 96, 131, 139, 140, 198, 213, 221, 279, 300, 309, 312, 322, 377, 416, 474, 494, 518, 583, 647, 673, 698, 714, 718, 746, 790, 799, 808, 823, 837, 877, 918, 926, 931, 935, 983, 1027, 1048, 1143, 1155, 1218, 1220, 1235, 1262, 1312, 1320, 1335, 1340, 1406, 1416, 1444, 1463, 1547, 1696, 1746, 1770, 1884, 1888, 1987, 2130, 2218

编号	名字	简评	链接	程度
22	Generate Parentheses		lc022	写过✅
31	Next Permutation
46	Permutations		lc046	写过✅
47	Permutations II		lc047	写过✅
51	N-Queens
52	N-Queens II
77	Combinations
78	Subsets
79	Word Search
90	Subsets II
91	Decode Ways
93	Restore IP Addresses
95	Unique Binary Search Trees II
96	Unique Binary Search Trees
131	Palindrome Partitioning
139	Word Break
140	Word Break II
198	House Robber		lc198	写过✅
213	House Robber II
221	Maximal Square
279	Perfect Squares
300	Longest Increasing Subsequence		lc300	写过✅
309	Best Time to Buy and Sell Stock with Cooldown
312	Burst Balloons
322	Coin Change		lc322	写过✅
377	Combination Sum IV
416	Partition Equal Subset Sum
474	Ones and Zeroes
494	Target Sum
518	Coin Change II
583	Delete Operation for Two Strings
647	Palindromic Substrings
673	Number of Longest Increasing Subsequence
698	Partition to K Equal Sum Subsets
714	Best Time to Buy and Sell Stock with Transaction Fee
718	Maximum Length of Repeated Subarray
746	Min Cost Climbing Stairs		lc746	写过✅
790	Domino and Tromino Tiling
799	Champagne Tower
808	Soup Servings
823	Binary Trees With Factors
837	New 21 Game
877	Stone Game
918	Maximum Sum Circular Subarray
926	Flip String to Monotone Increasing
931	Minimum Falling Path Sum
935	Knight Dialer
983	Minimum Cost For Tickets
1027	Longest Arithmetic Subsequence
1048	Longest String Chain
1143	Longest Common Subsequence		lc1143	写过✅
1155	Number of Dice Rolls With Target Sum
1218	Longest Arithmetic Subsequence of Given Difference
1220	Count Vowels Permutation
1235	Maximum Profit in Job Scheduling
1262	Greatest Sum Divisible by Three
1312	Minimum Insertion Steps to Make a String Palindrome
1320	Minimum Distance to Type a Word Using Two Fingers
1335	Minimum Difficulty of a Job Schedule
1340	Jump Game V
1406	Stone Game III
1416	Restore The Array
1444	Number of Ways of Cutting a Pizza
1463	Cherry Pickup II
1547	Minimum Cost to Cut a Stick
1696	Jump Game VI
1746	Maximum Subarray Sum After One Operation
1770	Maximum Score from Performing Multiplication Operations
1884	Egg Drop With 2 Eggs and N Floors
1888	Minimum Number of Flips to Make the Binary String Alternating
1987	Number of Unique Good Subsequences
2130	Maximum Twin Sum of a Linked List
2218	Maximum Value of K Coins From Piles

六，分组 phase 4 Heap / Binary Search / Advanced

Binary Search

• 单子 4, 33, 34, 35, 74, 81, 153, 154, 162, 287, 378, 410, 436, 475, 528, 540, 611, 658, 668, 702, 704, 875, 981, 1011, 1050, 1060, 1095, 1146, 1172, 1231, 1283, 1292, 1300, 1482, 1552, 1642, 1648, 1658, 1712, 1802, 1833, 1870, 1891, 1901

编号	名字	简评	链接	程度
4	Median of Two Sorted Arrays		lc004	写过✅
33	Search in Rotated Sorted Array
34	Find First and Last Position of Element in Sorted Array
35	Search Insert Position
74	Search a 2D Matrix
81	Search in Rotated Sorted Array II
153	Find Minimum in Rotated Sorted Array
154	Find Minimum in Rotated Sorted Array II
162	Find Peak Element
287	Find the Duplicate Number
378	Kth Smallest Element in a Sorted Matrix
410	Split Array Largest Sum
436	Find Right Interval
475	Heaters
528	Random Pick with Weight
540	Single Element in a Sorted Array
611	Valid Triangle Number
658	Find K Closest Elements
668	Kth Smallest Number in Multiplication Table
702	Search in a Sorted Array of Unknown Size
704	Binary Search
875	Koko Eating Bananas
981	Time Based Key-Value Store
1011	Capacity To Ship Packages Within D Days
1050	Actors and Directors Who Cooperated At Least Three Times
1060	Missing Element in Sorted Array
1095	Find in Mountain Array
1146	Snapshot Array
1172	Dinner Plate Stacks
1231	Divide Chocolate
1283	Find the Smallest Divisor Given a Threshold
1292	Maximum Side Length of a Square with Sum Less than or Equal to Threshold
1300	Sum of Mutated Array Closest to Target
1482	Minimum Number of Days to Make m Bouquets
1552	Magnetic Force Between Two Balls
1642	Furthest Building You Can Reach
1648	Sell Diminishing-Valued Colored Balls
1658	Minimum Operations to Reduce X to Zero
1712	Ways to Split Array Into Three Subarrays
1802	Maximum Value at a Given Index in a Bounded Array
1833	Maximum Ice Cream Bars
1870	Minimum Speed to Arrive on Time
1891	Cutting Ribbons
1901	Find a Peak Element II

Heap

• 单子 215, 347, 373, 378, 480, 502, 703, 767, 786, 857, 973, 1046, 1054, 1086, 1094, 1167, 1383, 1424, 1439, 1508, 1642, 1792, 1882, 1928, 1962, 1985, 2054, 2146, 2233, 2462

编号	名字	简评	链接	程度
215	Kth Largest Element in an Array		lc215	写过✅
347	Top K Frequent Elements
373	Find K Pairs with Smallest Sums
378	Kth Smallest Element in a Sorted Matrix
480	Sliding Window Median
502	IPO
703	Kth Largest Element in a Stream
767	Reorganize String
786	K-th Smallest Prime Fraction
857	Minimum Cost to Hire K Workers
973	K Closest Points to Origin
1046	Last Stone Weight
1054	Distant Barcodes
1086	High Five
1094	Car Pooling
1167	Minimum Cost to Connect Sticks
1383	Maximum Performance of a Team
1424	Diagonal Traverse II
1439	Find the Kth Smallest Sum of a Matrix With Sorted Rows
1508	Range Sum of Sorted Subarray Sums
1642	Furthest Building You Can Reach
1792	Maximum Average Pass Ratio
1882	Process Tasks Using Servers
1928	Minimum Cost to Reach Destination in Time
1962	Remove Stones to Minimize the Total
1985	Find the Kth Largest Integer in the Array
2054	Two Best Non-Overlapping Events
2146	K Highest Ranked Items Within a Price Range
2233	Maximum Product After K Increments
2462	Total Cost to Hire K Workers