LeetCode Practices

List of solutions

No.	Id.	Name	Solutions	Last Update
1	1	Two Sum	Java Kotlin	2020-09-09 21:42
2	2	Add Two Numbers	Kotlin	2020-09-06 18:42
3	3	Longest Substring Without Repeating Characters	Kotlin	2020-09-06 18:42
4	4	Median of Two Sorted Arrays	Java Kotlin	2020-09-17 23:33
5	5	Longest Palindromic Substring	Kotlin	2020-09-06 18:42
12	12	Integer to Roman	Java	2020-09-06 18:40
13	13	Roman to Integer	Java	2020-09-06 18:40
15	15	3Sum	Kotlin	2020-09-06 18:42
17	17	Letter Combinations of a Phone Number	Java	2020-09-06 18:42
18	18	4Sum	Java	2020-09-17 15:32
20	20	Valid Parentheses	Java	2020-09-06 18:42
21	21	Merge Two Sorted Lists	Java	2020-09-17 15:51
22	22	Generate Parentheses	Java	2020-09-06 01:23
23	23	Merge k Sorted Lists	Java	2020-09-17 16:06
24	24	Swap Nodes in Pairs	Java	2020-09-17 01:35
26	26	Remove Duplicates from Sorted Array	Kotlin	2020-09-06 18:42
33	33	Search in Rotated Sorted Array	Java	2020-09-17 02:18
34	34	Find First and Last Position of Element in Sorted Array	Java	2020-09-18 01:54
35	35	Search Insert Position	Java	2020-09-17 22:26
36	36	Valid Sudoku	Java	2020-09-14 01:01
37	37	Sudoku Solver	Java	2020-09-16 01:45
39	39	Combination Sum	Java	2020-09-12 16:10
40	40	Combination Sum II	Java	2020-09-13 02:15
48	48	Rotate Image	Java	2020-09-14 22:34
53	53	Maximum Subarray	Java	2020-09-06 18:42
56	56	Merge Intervals	Kotlin	2020-09-06 18:42
65	65	Valid Number	Kotlin	2020-09-06 18:42
66	66	Plus One	Java	2020-09-09 21:21
67	67	Add Binary	Java	2020-09-10 00:47
77	77	Combinations	Java	2020-09-12 02:19
79	79	Word Search	Java	2020-09-13 17:59
81	81	Search in Rotated Sorted Array II	Java	2020-09-18 11:21
88	88	Merge Sorted Array	Java	2020-09-19 01:00
94	94	Binary Tree Inorder Traversal	Java	2020-09-16 01:59
122	122	Best Time to Buy and Sell Stock II	Kotlin	2020-09-06 18:42
136	136	Single Number	Java	2020-09-10 00:55
137	137	Single Number II	Java	2020-09-10 01:52
153	153	Find Minimum in Rotated Sorted Array	Java	2020-09-18 12:02
154	154	Find Minimum in Rotated Sorted Array II	Java	2020-09-18 12:13
175	175	Combine Two Tables	MySQL	2020-09-06 18:58
176	176	Second Highest Salary	MySQL	2020-09-06 18:58
178	178	Rank Scores	MySQL	2020-09-06 18:58
182	182	Duplicate Emails	MySQL	2020-09-06 18:58
189	189	Rotate Array	Java	2020-09-13 22:25
190	190	Reverse Bits	Java	2020-09-13 23:12
191	191	Number of 1 Bits	Java	2020-09-06 18:42
192	192	Word Frequency	Bash	2020-09-06 18:58
198	198	House Robber	Java	2020-09-17 00:00
204	204	Count Primes	Java	2020-09-18 16:20
205	205	Isomorphic Strings	Java	2020-09-18 16:49
206	206	Reverse Linked List	Java	2020-09-18 17:07
216	216	Combination Sum III	Java	2020-09-13 22:18
217	217	Contains Duplicate	Java	2020-09-14 00:27
226	226	Invert Binary Tree	Java	2020-09-16 01:59
257	257	Binary Tree Paths	Java	2020-09-19 00:31
260	260	Single Number III	Java	2020-09-10 02:03
268	268	Missing Number	Java	2020-09-06 18:42
300	300	Longest Increasing Subsequence	Java	2020-09-18 13:45
349	349	Intersection of Two Arrays	Java	2020-09-11 15:03
350	350	Intersection of Two Arrays II	Java	2020-09-11 15:13
371	371	Sum of Two Integers	Kotlin	2020-09-06 18:42
381	381	Insert Delete GetRandom O(1) - Duplicates allowed	Java	2020-09-06 18:42
401	401	Binary Watch	Java	2020-09-06 18:42
404	404	Sum of Left Leaves	Java	2020-09-19 00:51
405	405	Convert a Number to Hexadecimal	Java	2020-09-06 18:42
535	535	Encode and Decode TinyURL	Java	2020-09-16 23:30
704	792	Binary Search	Java	2020-09-18 01:05
807	825	Max Increase to Keep City Skyline	Java	2020-09-16 23:45
811	829	Subdomain Visit Count	Java	2020-09-11 18:12
852	882	Peak Index in a Mountain Array	Java	2020-09-18 15:12
867	898	Transpose Matrix	Java	2020-09-10 22:34
986	1028	Interval List Intersections	Kotlin	2020-09-11 17:54
1002	1044	Find Common Characters	Java	2020-09-11 17:54
1095	1185	Find in Mountain Array	Java	2020-09-18 15:32
1114	1203	Print in Order	Java	2020-09-06 18:42
1108	1205	Defanging an IP Address	Java	2020-09-16 23:16
1431	1528	Kids With the Greatest Number of Candies	Java	2020-09-16 18:36
1476	1572	Subrectangle Queries	Java	2020-09-16 17:08
1470	1580	Shuffle the Array	Java	2020-09-16 19:11
1480	1603	Running Sum of 1d Array	Java	2020-09-16 02:20
1486	1610	XOR Operation in an Array	Java	2020-09-17 13:41
1512	1635	Number of Good Pairs	Java Python	2020-09-16 17:23
1572	1677	Matrix Diagonal Sum	Java	2020-09-16 23:11
面试题 02.03	100187	Delete Middle Node LCCI	Java	2020-09-16 23:03
面试题 16.01	100258	Swap Numbers LCCI	Java	2020-09-16 23:05
剑指 Offer 58 - II	100330	左旋转字符串 LCOF	Java	2020-09-16 21:59
剑指 Offer 64	100345	求1+2+…+n LCOF	Java	2020-09-16 22:27
面试题 10.01	1000012	Sorted Merge LCCI	Java	2020-09-17 22:12
LCP 17	1000139	速算机器人	Java	2020-09-16 02:14

No. column is the problem id display in web page.
Id. column is the true problem id used by various LeetCode API.

How to start a new problem?

python3 orchestra/orchestra.py
# then enter a URL refers to LeetCode problem and 
# select one language you preferred.

IntelliJ should popup right after the solution file had been created. Due to the lack of API support exposed by Jetbrains platform, a Reload All Gradle Projects action should be performed manually in order to make IntelliJ pick up the newly created source set.

If you choose Java as the implementation language, you will notice a SolutionTest static nest class has been created inside regular Solution template, and it extends JavaBase<Solution>. This super class provides auto test discovery and many useful helper methods, refer to my implementation as example.

What if you want to start over and build your own solution codebase? Simply delete all sub folders inside solution directory and here you go, remember to run gradle test before submit your solution.

old script is deprecated.

How to generate this README file?

This script (table_of_solutions.py) will iterate through files in the latest commit tree in solution directory, and record file's last commit timestamp. Then replace <!-- table of solutions --> section in this file with preformatted markdown table.

python3 ./table_of_solutions.py