Reetkode

My personal collection of LeetCode solutions done in multiple languages, shared for learning and reference.

This README is generated using the following custom-built Python scripts: lc_markdown.py, lc_chart.py, and lc_stats.py, as part of an automated GitHub Actions workflow which runs during checks within pull requests made to the main branch, updating the README content and organising solution files prior to merging.

The following diagram illustrates the action flow of using these scripts:

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Progress Overview

Solutions Directory

ID	Difficulty	Type	Title	Solutions
1	🟩 Easy	⚙️	Two Sum
3	🟨 Medium	⚙️	Longest Substring Without Repeating Characters
11	🟨 Medium	⚙️	Container With Most Water
13	🟩 Easy	⚙️	Roman To Integer
14	🟩 Easy	⚙️	Longest Common Prefix
17	🟨 Medium	⚙️	Letter Combinations Of A Phone Number
28	🟩 Easy	⚙️	Find The Index Of The First Occurrence In A String
36	🟨 Medium	⚙️	Valid Sudoku
46	🟨 Medium	⚙️	Permutations
49	🟨 Medium	⚙️	Group Anagrams
50	🟨 Medium	⚙️	Pow X N
58	🟩 Easy	⚙️	Length Of Last Word
66	🟩 Easy	⚙️	Plus One
73	🟨 Medium	⚙️	Set Matrix Zeroes
77	🟨 Medium	⚙️	Combinations
125	🟩 Easy	⚙️	Valid Palindrome
128	🟨 Medium	⚙️	Longest Consecutive Sequence
136	🟩 Easy	⚙️	Single Number
151	🟨 Medium	⚙️	Reverse Words In A String
175	🟩 Easy	🛢️	Combine Two Tables
176	🟨 Medium	🛢️	Second Highest Salary
178	🟨 Medium	🛢️	Rank Scores
180	🟨 Medium	🛢️	Consecutive Numbers
181	🟩 Easy	🛢️	Employees Earning More Than Their Managers
182	🟩 Easy	🛢️	Duplicate Emails
183	🟩 Easy	🛢️	Customers Who Never Order
184	🟨 Medium	🛢️	Department Highest Salary
185	🟥 Hard	🛢️	Department Top Three Salaries
196	🟩 Easy	🛢️	Delete Duplicate Emails
197	🟩 Easy	🛢️	Rising Temperature
217	🟩 Easy	⚙️	Contains Duplicate
230	🟨 Medium	⚙️	Kth Smallest Element In A Bst
238	🟨 Medium	⚙️	Product Of Array Except Self
242	🟩 Easy	⚙️	Valid Anagram
268	🟩 Easy	⚙️	Missing Number
271	🟨 Medium	⚙️	Encode And Decode Strings
283	🟩 Easy	⚙️	Move Zeroes
334	🟨 Medium	⚙️	Increasing Triplet Subsequence
345	🟩 Easy	⚙️	Reverse Vowels Of A String
347	🟨 Medium	⚙️	Top K Frequent Elements
366	🟨 Medium	⚙️	Find Leaves Of Binary Tree
387	🟩 Easy	⚙️	First Unique Character String
389	🟩 Easy	⚙️	Find The Difference
392	🟩 Easy	⚙️	Is Subsequence
443	🟨 Medium	⚙️	String Compression
459	🟩 Easy	⚙️	Repeated Substring Pattern
507	🟩 Easy	⚙️	Perfect Number
509	🟩 Easy	⚙️	Fibonacci Number
511	🟩 Easy	🛢️	Game Play Analysis I
512	🟩 Easy	🛢️	Game Play Analysis II
550	🟨 Medium	🛢️	Game Play Analysis IV
570	🟨 Medium	🛢️	Managers With At Least 5 Direct Reports
577	🟩 Easy	🛢️	Employee Bonus
584	🟩 Easy	🛢️	Find Customer Referee
585	🟨 Medium	🛢️	Investments In 2016
586	🟩 Easy	🛢️	Customer Placing The Largest Number Of Orders
595	🟩 Easy	🛢️	Big Countries
596	🟩 Easy	🛢️	Classes More Than 5 Students
597	🟩 Easy	🛢️	Friend Requests I Overall Acceptance Rate
602	🟨 Medium	🛢️	Friend Requests II Who Has The Most Friends
603	🟩 Easy	🛢️	Consecutive Available Seats
607	🟩 Easy	🛢️	Sales Person
610	🟩 Easy	🛢️	Triangle Judgement
613	🟩 Easy	🛢️	Shortest Distance In A Line
619	🟩 Easy	🛢️	Biggest Single Number
620	🟩 Easy	🛢️	Not Boring Movies
626	🟨 Medium	🛢️	Exchange Seats
627	🟩 Easy	🛢️	Swap Salary
643	🟩 Easy	⚙️	Maximum Average Subarray I
657	🟩 Easy	⚙️	Robot Return To Origin
682	🟩 Easy	⚙️	Baseball Game
709	🟩 Easy	⚙️	To Lower Case
728	🟩 Easy	⚙️	Self Dividing Numbers
796	🟩 Easy	⚙️	Rotate String
896	🟩 Easy	⚙️	Monotonic Array
1045	🟨 Medium	🛢️	Customers Who Bought All Products
1050	🟩 Easy	🛢️	Actors And Directors Who Cooperated At Least Three Times
1068	🟩 Easy	🛢️	Product Sales Analysis I
1069	🟩 Easy	🛢️	Product Sales Analysis II
1070	🟨 Medium	🛢️	Product Sales Analysis III
1071	🟩 Easy	⚙️	Greatest Common Divisor Of Strings
1075	🟩 Easy	🛢️	Project Employees I
1082	🟩 Easy	🛢️	Sales Analysis I
1083	🟩 Easy	🛢️	Sales Analysis II
1084	🟩 Easy	🛢️	Sales Analysis III
1119	🟩 Easy	⚙️	Remove Vowels From A String
1133	🟩 Easy	⚙️	Largest Unique Number
1141	🟩 Easy	🛢️	User Activity For The Past 30 Days I
1148	🟩 Easy	🛢️	Article Views I
1164	🟨 Medium	🛢️	Product Price At A Given Date
1165	🟩 Easy	⚙️	Single-row Keyboard
1174	🟨 Medium	🛢️	Immediate Food Delivery II
1179	🟩 Easy	🛢️	Reformat Department Table
1180	🟩 Easy	⚙️	Count Substrings With Only One Distinct Letter
1193	🟨 Medium	🛢️	Monthly Transactions I
1204	🟨 Medium	🛢️	Last Person To Fit In The Bus
1207	🟩 Easy	⚙️	Unique Number Of Occurrences
1211	🟩 Easy	🛢️	Queries Quality And Percentage
1232	🟩 Easy	⚙️	Check If It Is A Straight Line
1251	🟩 Easy	🛢️	Average Selling Price
1255	🟥 Hard	⚙️	Maximum Score Words Formed By Letters
1280	🟩 Easy	🛢️	Students And Examinations
1321	🟨 Medium	🛢️	Restaurant Growth
1327	🟩 Easy	🛢️	List The Products Ordered In A Period
1341	🟨 Medium	🛢️	Movie Rating
1346	🟩 Easy	⚙️	Check If N And Its Double Exist
1352	🟨 Medium	⚙️	Product Of The Last K Numbers
1378	🟩 Easy	🛢️	Replace Employee Id With The Unique Identifier
1393	🟨 Medium	🛢️	Capital Gain Loss
1407	🟩 Easy	🛢️	Top Travellers
1431	🟩 Easy	⚙️	Kids With The Greatest Number Of Candies
1455	🟩 Easy	⚙️	Check If A Word Occurs As A Prefix Of Any Word In A Sentence
1456	🟨 Medium	⚙️	Maximum Number Of Vowels In A Substring Of Given Length
1484	🟩 Easy	🛢️	Group Sold Products By The Date
1491	🟩 Easy	⚙️	Average Salary Excluding The Minimum And Maximum Salary
1502	🟩 Easy	⚙️	Can Make Arithmetic Progression From Sequence
1512	🟩 Easy	⚙️	Number Of Good Pairs
1517	🟩 Easy	🛢️	Find Users With Valid Emails
1523	🟩 Easy	⚙️	Count Odd Numbers In An Interval Range
1527	🟩 Easy	🛢️	Patients With A Condition
1534	🟩 Easy	⚙️	Count Good Triplets
1570	🟨 Medium	⚙️	Dot Product Of Two Sparse Vectors
1572	🟩 Easy	⚙️	Matrix Diagonal Sum
1581	🟩 Easy	🛢️	Customer Who Visited But Did Not Make Any Transactions
1587	🟩 Easy	🛢️	Bank Account Summary II
1633	🟩 Easy	🛢️	Percentage Of Users Who Attended A Contest
1652	🟩 Easy	⚙️	Defuse The Bomb
1661	🟩 Easy	🛢️	Average Time Of Process Per Machine
1667	🟩 Easy	🛢️	Fix Names In A Table
1672	🟩 Easy	⚙️	Richest Customer Wealth
1679	🟨 Medium	⚙️	Max Number Of K-sum Pairs
1683	🟩 Easy	🛢️	Invalid Tweets
1684	🟩 Easy	⚙️	Count The Number Of Consistent Strings
1693	🟩 Easy	🛢️	Daily Leads And Partners
1700	🟩 Easy	⚙️	Number Of Students Unable To Eat Lunch
1720	🟩 Easy	⚙️	Decode Xored Array
1726	🟨 Medium	⚙️	Tuple With Same Product
1729	🟩 Easy	🛢️	Find Followers Count
1731	🟩 Easy	🛢️	The Number Of Employees Which Report To Each Employee
1741	🟩 Easy	🛢️	Find Total Time Spent By Each Employee
1752	🟩 Easy	⚙️	Check If Array Is Sorted And Rotated
1756	🟨 Medium	⚙️	Design Most Recently Used Queue
1757	🟩 Easy	🛢️	Recyclable And Low Fat Products
1768	🟩 Easy	⚙️	Merge Strings Alternately
1773	🟩 Easy	⚙️	Count Items Matching A Rule
1789	🟩 Easy	🛢️	Primary Department For Each Employee
1790	🟩 Easy	⚙️	Check If One String Swap Can Make Strings Equal
1795	🟩 Easy	🛢️	Rearrange Products Table
1796	🟩 Easy	⚙️	Second Largest Digit String
1800	🟩 Easy	⚙️	Maximum Ascending Subarray Sum
1822	🟩 Easy	⚙️	Sign Of The Product Of An Array
1829	🟨 Medium	⚙️	Maximum Xor For Each Query
1845	🟨 Medium	⚙️	Seat Reservation Manager
1852	🟨 Medium	⚙️	Distinct Numbers In Each Subarray
1859	🟩 Easy	⚙️	Sorting The Sentence
1873	🟩 Easy	🛢️	Calculate Special Bonus
1890	🟩 Easy	🛢️	The Latest Login In 2020
1907	🟨 Medium	🛢️	Count Salary Categories
1910	🟨 Medium	⚙️	Remove All Occurrences Of A Substring
1934	🟨 Medium	🛢️	Confirmation Rate
1957	🟩 Easy	⚙️	Delete Characters To Make Fancy String
1965	🟩 Easy	🛢️	Employees With Missing Information
1978	🟩 Easy	🛢️	Employees Whose Manager Left The Company
1995	🟩 Easy	⚙️	Count Special Quadruplets
2042	🟩 Easy	⚙️	Check If Numbers Are Ascending In A Sentence
2044	🟨 Medium	⚙️	Count Number Of Maximum Bitwise-or Subsets
2073	🟩 Easy	⚙️	Time Needed To Buy Tickets
2109	🟨 Medium	⚙️	Adding Spaces To A String
2124	🟩 Easy	⚙️	Check If All As Appears Before All Bs
2125	🟨 Medium	⚙️	Number Of Laser Beams In A Bank
2215	🟩 Easy	⚙️	Find The Difference Of Two Arrays
2283	🟩 Easy	⚙️	Check If Number Has Equal Digit Count And Digit Value
2342	🟨 Medium	⚙️	Max Sum Of A Pair With Equal Sum Of Digits
2349	🟨 Medium	⚙️	Design A Number Container System
2352	🟨 Medium	⚙️	Equal Row And Column Pairs
2356	🟩 Easy	🛢️	Number Of Unique Subjects Taught By Each Teacher
2364	🟨 Medium	⚙️	Count Number Of Bad Pairs
2391	🟨 Medium	⚙️	Minimum Amount Of Time To Collect Garbage
2393	🟨 Medium	⚙️	Count Strictly Increasing Subarrays
2427	🟩 Easy	⚙️	Number Of Common Factors
2475	🟩 Easy	⚙️	Number Of Unequal Triplets In Array
2485	🟩 Easy	⚙️	Find The Pivot Integer
2490	🟩 Easy	⚙️	Circular Sentence
2599	🟨 Medium	⚙️	Make The Prefix Sum Non-negative
2619	🟩 Easy	⚙️	Array Prototype Last
2620	🟩 Easy	⚙️	Counter
2621	🟩 Easy	⚙️	Sleep
2623	🟨 Medium	⚙️	Memoize
2626	🟩 Easy	⚙️	Array Reduce Transformation
2629	🟩 Easy	⚙️	Function Composition
2631	🟨 Medium	⚙️	Group By
2634	🟩 Easy	⚙️	Filter Elements From Array
2635	🟩 Easy	⚙️	Apply Transform Over Each Element In Array
2637	🟨 Medium	⚙️	Promise Time Limit
2657	🟨 Medium	⚙️	Find The Prefix Common Array Of Two Arrays
2665	🟩 Easy	⚙️	Counter II
2666	🟩 Easy	⚙️	Allow One Function Call
2667	🟩 Easy	⚙️	Create Hello World Function
2677	🟩 Easy	⚙️	Chunk Array
2703	🟩 Easy	⚙️	Return Length Of Arguments Passed
2704	🟩 Easy	⚙️	To Be Or Not To Be
2715	🟩 Easy	⚙️	Timeout Cancellation
2722	🟨 Medium	⚙️	Join Two Arrays By Id
2723	🟩 Easy	⚙️	Add Two Promises
2724	🟩 Easy	⚙️	Sort By
2725	🟩 Easy	⚙️	Interval Cancellation
2727	🟩 Easy	⚙️	Is Object Empty
2728	🟩 Easy	⚙️	Count Houses In A Circular Street
2769	🟩 Easy	⚙️	Find The Maximum Achievable Number
2879	🟩 Easy	🛢️	Display The First Three Rows
2914	🟨 Medium	⚙️	Minimum Number Of Changes To Make Binary String Beautiful
2974	🟩 Easy	⚙️	Minimum Number Game
3014	🟩 Easy	⚙️	Minimum Number Of Pushes To Type Word I
3016	🟨 Medium	⚙️	Minimum Number Of Pushes To Type Word II
3032	🟩 Easy	⚙️	Count Numbers With Unique Digits II
3065	🟩 Easy	⚙️	Minimum Operations To Exceed Threshold Value I
3066	🟨 Medium	⚙️	Minimum Operations To Exceed Threshold Value II
3105	🟩 Easy	⚙️	Longest Strictly Increasing Or Strictly Decreasing Subarray
3110	🟩 Easy	⚙️	Score Of A String
3151	🟩 Easy	⚙️	Special Array I
3160	🟨 Medium	⚙️	Find The Number Of Distinct Colors Among The Balls
3162	🟩 Easy	⚙️	Find The Number Of Good Pairs I
3163	🟨 Medium	⚙️	String Compression III
3173	🟩 Easy	⚙️	Bitwise Or Of Adjacent Elements
3174	🟩 Easy	⚙️	Clear Digits
3211	🟨 Medium	⚙️	Generate Binary Strings Without Adjacent Zeros
3220	🟨 Medium	🛢️	Odd And Even Transactions
3223	🟨 Medium	⚙️	Minimum Length Of String After Operations
3300	🟩 Easy	⚙️	Minimum Element After Replacement With Digit Sum
3340	🟩 Easy	⚙️	Check Balanced String
3345	🟩 Easy	⚙️	Smallest Divisible Digit Product I
3427	🟩 Easy	⚙️	Sum Of Variable Length Subarrays
3452	🟩 Easy	⚙️	Sum Of Good Numbers
3461	🟩 Easy	⚙️	Check If Digits Are Equal In String After Operations I
3465	🟩 Easy	🛢️	Find Products With Valid Serial Numbers
3467	🟩 Easy	⚙️	Transform Array By Parity
3475	🟨 Medium	🛢️	Dna Pattern Recognition
3491	🟩 Easy	⚙️	Phone Number Prefix
3492	🟩 Easy	⚙️	Maximum Containers On A Ship
3497	🟨 Medium	🛢️	Analyze Subscription Conversion
3498	🟩 Easy	⚙️	Reverse Degree Of A String
3512	🟩 Easy	⚙️	Minimum Operations To Make Array Sum Divisible By K
3527	🟨 Medium	⚙️	Find The Most Common Response
3536	🟩 Easy	⚙️	Maximum Product Of Two Digits
3541	🟩 Easy	⚙️	Find Most Frequent Vowel And Consonant
3550	🟩 Easy	⚙️	Smallest Index With Digit Sum Equal To Index
3616	🟨 Medium	⚙️	Number Of Student Replacements
3631	🟨 Medium	⚙️	Sort Threats By Severity And Exploitability

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