Description
LeetCode solutions using PHP, TypeScript, Python, and Go.

LeetCode

No.	Title	Solution	Difficulty
3411	Maximum Subarray With Equal Products	PHP, Go	Easy
2470	Number of Subarrays With LCM Equal to K	PHP, Go	Medium
2447	Number of Subarrays With GCD Equal to K	PHP, Go	Medium
2390	Removing Stars From a String	TypeScript, PHP, Python, Go	Medium
2356	Number of Unique Subjects Taught by Each Teacher	MySQL	Easy
2352	Equal Row and Column Pairs	TypeScript, PHP, Python, Go	Medium
2215	Find the Difference of Two Arrays	TypeScript, PHP, Python, Go, C#	Easy
1978	Employees Whose Manager Left the Company	MySQL	Easy
1979	Find Greatest Common Divisor of Array	PHP	Easy
1965	Employees With Missing Information	MySQL	Easy
1934	Confirmation Rate	MySQL	Medium
1929	Concatenation of Array	JavaScript, PHP	Easy
1926	Nearest Exit from Entrance in Maze	TypeScript, PHP, Python	Medium
1907	Count Salary Categories	MySQL	Medium
1890	The Latest Login in 2020	MySQL	Easy
1873	Calculate Special Bonus	MySQL	Easy
1795	Rearrange Products Table	MySQL	Easy
1789	Primary Department for Each Employee	MySQL	Easy
1768	Merge Strings Alternately	TypeScript, PHP, Python, Go	Easy
1757	Recyclable and Low Fat Products	MySQL	Easy
1741	Find Total Time Spent by Each Employee	MySQL	Easy
1732	Find the Highest Altitude	TypeScript, PHP, Python, Go	Easy
1731	The Number of Employees Which Report to Each Employee	MySQL	Easy
1729	Find Followers Count	MySQL	Easy
1710	Maximum Units on a Truck	TypeScript, PHP	Easy
1693	Daily Leads and Partners	MySQL	Easy
1683	Invalid Tweets	MySQL	Easy
1679	Max Number of K-Sum Pairs	TypeScript, PHP, Python, Go	Medium
1667	Fix Names in a Table	MySQL	Easy
1661	Average Time of Process per Machine	MySQL	Easy
1657	Determine if Two Strings Are Close	TypeScript, PHP, Python, Go	Medium
1633	Percentage of Users Attended a Contest	MySQL	Easy
1587	Bank Account Summary II	MySQL	Easy
1581	Customer Who Visited but Did Not Make Any Transactions	MySQL	Easy
1527	Patients With a Condition	MySQL	Easy
1517	Find Users With Valid E-Mails	MySQL	Easy
1493	Longest Subarray of 1's After Deleting One Element	TypeScript, PHP, Python, Go, C#	Medium
1484	Group Sold Products By The Date	MySQL	Easy
1480	Running Sum of 1d Array	TypeScript, PHP, Python	Easy
1456	Maximum Number of Vowels in a Substring of Given Length	TypeScript, PHP, Python, Go, C#	Medium
1431	Kids With the Greatest Number of Candies	TypeScript, PHP, Python, Go	Easy
1407	Top Travellers	MySQL	Easy
1393	Capital Gain/Loss	MySQL	Medium
1378	Replace Employee ID With The Unique Identifier	MySQL	Easy
1341	Movie Rating	MySQL	Medium
1327	List the Products Ordered in a Period	MySQL	Easy
1321	Restaurant Growth	MySQL	Medium
1288	Remove Covered Intervals	PHP, Python, Go	Medium
1280	Students and Examinations	MySQL	Easy
1251	Average Selling Price	MySQL	Easy
1211	Queries Quality and Percentage	MySQL	Easy
1204	Last Person to Fit in the Bus	MySQL	Medium
1207	Unique Number of Occurrences	TypeScript, PHP, Python, Go	Easy
1193	Monthly Transactions I	MySQL	Medium
1174	Immediate Food Delivery II	MySQL	Medium
1164	Product Price at a Given Date	MySQL	Easy
1158	Market Analysis I	MySQL	Medium
1148	Article Views I	MySQL	Easy
1141	User Activity for the Past 30 Days I	MySQL	Easy
1084	Sales Analysis III	MySQL	Easy
1075	Project Employees I	MySQL	Easy
1071	Greatest Common Divisor of Strings	TypeScript, PHP, Python, Go	Easy
1070	Product Sales Analysis III	MySQL	Medium
1068	Product Sales Analysis I	MySQL	Easy
1050	Actors and Directors Who Cooperated At Least Three Times	MySQL	Easy
1045	Customers Who Bought All Products	MySQL	Medium
1004	Max Consecutive Ones III	TypeScript, PHP, Python, Go	Medium
986	Interval List Intersections	PHP, Go	Medium
946	Validate Stack Sequences	TypeScript, PHP	Medium
876	Middle of the Linked List	TypeScript, PHP, Python	Easy
735	Asteroid Collision	TypeScript, PHP, Python, Go	Medium
724	Find Pivot Index	TypeScript, PHP, Python, Go, C#	Easy
704	Binary Search	TypeScript, PHP, Python	Easy
680	Valid Palindrome II	PHP, Go	Easy
643	Maximum Average Subarray I	TypeScript, PHP, Python, Go	Easy
627	Swap Salary	MySQL	Easy
626	Exchange Seats	MySQL	Medium
620	Not Boring Movies	MySQL	Easy
619	Biggest Single Number	MySQL	Easy
617	Merge Two Binary Trees	JavaScript, PHP	Easy
610	Triangle Judgement	MySQL	Easy
608	Tree Node	MySQL	Medium
607	Sales Person	MySQL	Easy
605	Can Place Flowers	TypeScript, PHP, Python, Go	Easy
602	Friend Requests II: Who Has the Most Friends	MySQL	Medium
596	Classes More Than 5 Students	MySQL	Easy
595	Big Countries	MySQL	Easy
589	N-ary Tree Preorder Traversal	TypeScript, PHP, Python	Easy
586	Customer Placing the Largest Number of Orders	MySQL	Easy
585	Investments in 2016	MySQL	Medium
584	Find Customer Referee	MySQL	Easy
577	Employee Bonus	MySQL	Easy
570	Managers with at Least 5 Direct Reports	MySQL	Medium
550	Game Play Analysis IV	MySQL	Medium
511	Game Play Analysis I	MySQL	Easy
509	Fibonacci Number	JavaScript, PHP	Easy
503	Next Greater Element II	PHP	Medium
496	Next Greater Element I	PHP, Go	Easy
443	String Compression	TypeScript, PHP, Python, Go	Medium
410	Split Array Largest Sum	PHP, Go	Hard
409	Longest Palindrome	TypeScript, PHP, Python	Easy
392	Is Subsequence	TypeScript, PHP, Python, Go, C#	Easy
345	Reverse Vowels of a String	TypeScript, PHP, Python, Go, C#	Easy
334	Increasing Triplet Subsequence	TypeScript, PHP, Python, Go, C#	Medium
283	Move Zeroes	TypeScript, PHP, Python, Go	Easy
279	Perfect Squares	TypeScript, PHP, Python	Medium
278	First Bad Version	TypeScript, PHP, Python	Easy
253	Meeting Rooms II	PHP, Go	Medium
252	Meeting Rooms	PHP, Go	Easy
238	Product of Array Except Self	TypeScript, PHP, Python, Go	Medium
218	The Skyline Problem	PHP	Hard
210	Course Schedule II	PHP	Medium
207	Course Schedule	PHP	Medium
206	Reverse Linked List	TypeScript, PHP, Python	Easy
205	Isomorphic Strings	TypeScript, PHP, Python	Easy
197	Rising Temperature	MySQL	Easy
196	Delete Duplicate Emails	MySQL	Easy
189	Rotate Array	PHP	Medium
185	Department Top Three Salaries	MySQL	Hard
183	Customers Who Never Order	MySQL	Easy
182	Duplicate Emails	MySQL	Easy
181	Employees Earning More Than Their Managers	MySQL	Easy
180	Consecutive Numbers	MySQL	Medium
176	Second Highest Salary	MySQL	Medium
175	Combine Two Tables	MySQL	Easy
169	Majority Element	TypeScript, PHP, Python, Go	Easy
151	Reverse Words in a String	TypeScript, PHP, Python, Go, C#	Medium
142	Linked List Cycle II	TypeScript, PHP, Python	Medium
141	Linked List Cycle	TypeScript, PHP, Python	Easy
127	Word Ladder	PHP	Hard
125	Valid Palindrome	PHP, Go	Easy
122	Best Time to Buy and Sell Stock II	PHP, Go	Medium
121	Best Time to Buy and Sell Stock	TypeScript, PHP, Python, Go	Easy
111	Minimum Depth of Binary Tree	PHP, Go	Easy
104	Maximum Depth of Binary Tree	JavaScript, PHP	Easy
102	Binary Tree Level Order Traversal	TypeScript, PHP, Python, Go	Medium
94	Binary Tree Inorder Traversal	PHP	Easy
90	Subsets II	PHP	Medium
88	Merge Sorted Array	TypeScript, PHP, Python, Go, C#	Easy
80	Remove Duplicates from Sorted Array II	TypeScript, PHP, Python, Go, C#	Medium
78	Subsets	PHP	Medium
77	Combinations	PHP	Medium
57	Insert Interval	TypeScript, PHP, Go, C#	Medium
56	Merge Intervals	TypeScript, PHP, Go, C#	Medium
55	Jump Game	PHP, Go	Medium
50	Pow(x, n)	PHP, Go, C#	Medium
47	Permutations II	PHP	Medium
46	Permutations	TypeScript, PHP	Medium
37	Sudoku Solver	PHP	Hard
27	Remove Element	PHP, Go, C#	Easy
26	Remove Duplicates from Sorted Array	TypeScript, PHP, Python, Go, C#	Easy
21	Merge Two Sorted Lists	TypeScript, PHP, Python	Easy
20	Valid Parentheses	JavaScript, PHP	Easy
15	3Sum	PHP, Go	Medium
11	Container With Most Water	TypeScript, PHP, Python, C#	Medium
9	Palindrome Number	TypeScript, PHP	Easy
5	Longest Palindromic Substring	JavaScript, PHP	Medium
4	Median of Two Sorted Arrays	TypeScript, PHP	Hard
3	Longest Substring Without Repeating Characters	JavaScript, PHP	Medium
2	Add Two Numbers	JavaScript, PHP, Python	Medium
1	Two Sum	TypeScript, PHP, Python, Go	Easy