Leetcode 解题笔记

作者: xingzai | 来源:发表于2019-07-21 01:25 被阅读0次

断断续续刷 Leetcode 题挺久了，做后面题时前面很多题都忘的差不多了，在此弄个已经完成题目汇总贴，并附上每道题目的解题连接，以便日后查阅巩固学习。做题过程借鉴了很多大佬的绝妙想法，非常感谢，在此不一一列出。

Leetcode 题号	题目	通过率	难易程度
1	Two Sum	44.3%	Easy
2	Add Two Numbers	31.4%	Medium
3	Longest Substring Without Repeating Characters	28.6%	Medium
4	Median of Two Sorted Arrays	26.8	Hard
5	Longest Palindromic Substring	27.6%	Medium
6	ZigZag Conversion	32.5%	Medium
7	Reverse Integer	25.4%	Easy
8	String to Integer (atoi)	14.7%	Medium
9	Palindrome Number	44.0%	Easy
10	Regular Expression Matching	25.5%	Hard
11	Container With Most Water	45.5%	Medium
12	Integer to Roman	51.5%	Medium
13	Roman to Integer	52.8%	Easy
14	Longest Common Prefix	33.8%	Easy
15	3Sum	24.3%	Medium
17	Letter Combinations of a Phone Number	42.2%	Medium
18	4Sum	31.0%	Medium
19	Remove Nth Node From End of List	34.4%	Medium
20	Valid Parentheses	36.8%	Easy
21	Merge Two Sorted Lists	47.9%	Easy
22	Generate Parentheses	55.8%	Medium
23	Merge k Sorted Lists	35.0%	Hard
26	Remove Duplicates from Sorted Array	41.2%	Easy
27	Remove Element	45.0%	Easy
28	Implement strStr()	32.4%	Easy
29	Divide Two Integers	16.2%	Medium
31	Next Permutation	30.7%	Medium
32	Longest Valid Parentheses	25.8%	Hard
33	Search in Rotated Sorted Array	33.0%	Medium
34	Find First and Last Position of Element in Sorted Array	33.8%	Medium
35	Search Insert Position	41.0%	Easy
36	Valid Sudoku	43.8%	Medium
37	Sudoku Solver	37.8%	Hard
38	Count and Say	41.1%	Easy
39	Combination Sum	49.5%	Medium
40	Combination Sum II	42.5%	Medium
41	First Missing Positive	29.3%	Hard
42	Trapping Rain Water	43.7%	Hard
43	Multiply Strings	31.0%	Medium
44	Wildcard Matching	23.1%	Hard
45	Jump Game II	28.4%	Hard
46	Permutations	56.2%	Medium
47	Permutations II	41.3%	Medium
48	Rotate Image	49.5%	Medium
49	Group Anagrams	47.9%	Medium
50	Pow(x, n)	28.2%	Medium
52	N-Queens II	52.7%	Hard
53	Maximum Subarray	43.9%	Easy
54	Spiral Matrix	30.8%	Medium
55	Jump Game	32.2%	Medium
56	Merge Intervals	36.0%	Medium
57	Insert Interval	31.5%	Hard
59	Spiral Matrix II	47.3%	Medium
60	Permutation Sequence	33.4%	Medium
62	Unique Paths	48.3%	Medium
64	Minimum Path Sum	47.7%	Medium
66	Plus One	41.5%	Easy
67	Add Binary	39.8%	Easy
69	Sqrt(x)	31.6%	Easy
70	Climbing Stairs	44.6%	Easy
71	Simplify Path	29.1%	Medium
72	Edit Distance	38.5%	Hard
74	Search a 2D Matrix	35.0%	Medium
77	Combinations	48.6%	Medium
78	Subsets	53.8%	Medium
79	Word Search	31.8%	Medium
80	Remove Duplicates from Sorted Array II	40.8%	Medium
82	Remove Duplicates from Sorted List II	33.5%	Medium
83	Remove Duplicates from Sorted List	43.0%	Easy
84	Largest Rectangle in Histogram	31.6%	Hard
85	Maximal Rectangle	33.9%	Hard
88	Merge Sorted Array	36.2%	Easy
90	Subsets II	43.0%	Medium
91	Decode Ways	22.6%	Medium
93	Restore IP Addresses	31.8%	Medium
94	Binary Tree Inorder Traversal	57.5%	Medium
96	Unique Binary Search Trees	46.9%	Medium
98	Validate Binary Search Tree	26.0%	Medium
101	Symmetric Tree	43.8%	Easy
102	Binary Tree Level Order Traversal	49.2%	Medium
103	Binary Tree Zigzag Level Order Traversal	42.3%	Medium
104	Maximum Depth of Binary Tree	61.2%	Easy
105	Construct Binary Tree from Preorder and Inorder Traversal	60.6%	Medium
106	Construct Binary Tree from Inorder and Postorder Traversal	63.4%	Medium
108	Convert Sorted Array to Binary Search Tree	51.6%	Easy
110	Balanced Binary Tree	41.3%	Easy
111	Minimum Depth of Binary Tree	35.6%	Easy
112	Path Sum	38.2%	Easy
113	Path Sum II	41.3%	Medium
115	Distinct Subsequences	35.4%	Hard
116	Populating Next Right Pointers in Each Node	38.5%	Medium
117	Populating Next Right Pointers in Each Node II	34.9%	Medium
120	Triangle	39.8%	Medium
121	Best Time to Buy and Sell Stock	47.6%	Easy
122	Best Time to Buy and Sell Stock II	52.4%	Easy
124	Binary Tree Maximum Path Sum	30.4%	Hard
128	Longest Consecutive Sequence	42.1%	Hard
130	Surrounded Regions	41.7%	Medium
134	Gas Station	34.4%	Medium
136	Single Number	60.7%	Easy
139	Word Break	35.9%	Medium
141	Linked List Cycle	37.5%	Easy
142	Linked List Cycle II	32.6%	Medium
144	Binary Tree Preorder Traversal	51.9%	Medium
145	Binary Tree Postorder Traversal	49.3%	Hard
146	LRU Cache	26.1%	Medium
148	Sort List	36.0%	Medium
150	Evaluate Reverse Polish Notation	32.7%	Medium
151	Reverse Words in a String	17.1%	Medium
153	Find Minimum in Rotated Sorted Array	43.2%	Medium
154	Find Minimum in Rotated Sorted Array II	39.5%	Hard
155	Min Stack	37.6%	Easy
160	Intersection of Two Linked Lists	34.5%	Easy
162	Find Peak Element	41.5%	Medium
176	Second Highest Salary	27.6%	Easy
191	Number of 1 Bits	43.9%	Easy
198	House Robber	41.2%	Easy
200	Number of Islands	42.1%	Medium
201	Bitwise AND of Numbers Range	36.2%	Medium
206	Reverse Linked List	55.5%	Easy
209	Minimum Size Subarray Sum	35.2%	Medium
213	House Robber II	35.4%	Medium
215	Kth Largest Element in an Array	48.5%	Medium
216	Combination Sum III	52.1%	Medium
217	Contains Duplicate	52.5%	Easy
219	Contains Duplicate II	35.6%	Easy
220	Contains Duplicate III	19.9%	Medium
221	Maximal Square	33.4%	Medium
227	Basic Calculator II	33.9%	Medium
228	Summary Ranges	36.4%	Medium
230	Kth Smallest Element in a BST	52.3%	Medium
236	Lowest Common Ancestor of a Binary Tree	38.1%	Medium
238	Product of Array Except Self	55.7%	Medium
240	Search a 2D Matrix II	41.1%	Medium
241	Different Ways to Add Parentheses	50.6%	Medium
263	Ugly Number	40.8%	Easy
264	Ugly Number II 丑数	36.9%	Medium
322	Coin Change	31.1%	Medium
337	House Robber III	48.4%	Medium
354	Russian Doll Envelopes	34.1%	Hard
393	UTF-8 Validation	36.1%	Medium
402	Remove K Digits	26.9%	Medium
415	Add Strings	44.1%	Easy
432	All O`one Data Structure	29.9%	Hard
547	Friend Circles	54.1%	Medium
567	Permutation in String	38.7%	Medium
674	Longest Continuous Increasing Subsequence	44.5%	Easy
695	Max Area of Island	57.8%	Medium
746	Min Cost Climbing Stairs	47.7%	Easy

未完待续......

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