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Editorials

Leetcode Editorials are in-depth articles which explain how to approach and solve a problem. About 50% of problems have editorials. They are premium-only.

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Editorial code is available under the editorial_code folder of the project (credit to @raghavrambo007)

3. Longest Substring Without Repeating Characters

5. Longest Palindromic Substring

10. Regular Expression Matching

17. Letter Combinations of a Phone Number

19. Remove Nth Node From End of List

26. Remove Duplicates from Sorted Array

28. Find the Index of the First Occurrence in a String

30. Substring with Concatenation of All Words

33. Search in Rotated Sorted Array

34. Find First and Last Position of Element in Sorted Array

80. Remove Duplicates from Sorted Array II

81. Search in Rotated Sorted Array II

82. Remove Duplicates from Sorted List II

83. Remove Duplicates from Sorted List

84. Largest Rectangle in Histogram

94. Binary Tree Inorder Traversal

95. Unique Binary Search Trees II

96. Unique Binary Search Trees

98. Validate Binary Search Tree

99. Recover Binary Search Tree

102. Binary Tree Level Order Traversal

103. Binary Tree Zigzag Level Order Traversal

104. Maximum Depth of Binary Tree

105. Construct Binary Tree from Preorder and Inorder Traversal

106. Construct Binary Tree from Inorder and Postorder Traversal

107. Binary Tree Level Order Traversal II

108. Convert Sorted Array to Binary Search Tree

109. Convert Sorted List to Binary Search Tree

111. Minimum Depth of Binary Tree

114. Flatten Binary Tree to Linked List

116. Populating Next Right Pointers in Each Node

117. Populating Next Right Pointers in Each Node II

121. Best Time to Buy and Sell Stock

122. Best Time to Buy and Sell Stock II

123. Best Time to Buy and Sell Stock III

124. Binary Tree Maximum Path Sum

128. Longest Consecutive Sequence

132. Palindrome Partitioning II

138. Copy List with Random Pointer

144. Binary Tree Preorder Traversal

150. Evaluate Reverse Polish Notation

151. Reverse Words in a String

153. Find Minimum in Rotated Sorted Array

154. Find Minimum in Rotated Sorted Array II

157. Read N Characters Given Read4

159. Longest Substring with At Most Two Distinct Characters

160. Intersection of Two Linked Lists

166. Fraction to Recurring Decimal

167. Two Sum II - Input Array Is Sorted

170. Two Sum III - Data structure design

171. Excel Sheet Column Number

172. Factorial Trailing Zeroes

173. Binary Search Tree Iterator

186. Reverse Words in a String II

188. Best Time to Buy and Sell Stock IV

199. Binary Tree Right Side View

201. Bitwise AND of Numbers Range

203. Remove Linked List Elements

208. Implement Trie (Prefix Tree)

209. Minimum Size Subarray Sum

211. Design Add and Search Words Data Structure

215. Kth Largest Element in an Array

222. Count Complete Tree Nodes

225. Implement Stack using Queues

230. Kth Smallest Element in a BST

232. Implement Queue using Stacks

235. Lowest Common Ancestor of a Binary Search Tree

236. Lowest Common Ancestor of a Binary Tree

237. Delete Node in a Linked List

238. Product of Array Except Self

244. Shortest Word Distance II

245. Shortest Word Distance III

247. Strobogrammatic Number II

267. Palindrome Permutation II

270. Closest Binary Search Tree Value

271. Encode and Decode Strings

272. Closest Binary Search Tree Value II

287. Find the Duplicate Number

295. Find Median from Data Stream

297. Serialize and Deserialize Binary Tree

298. Binary Tree Longest Consecutive Sequence

300. Longest Increasing Subsequence

301. Remove Invalid Parentheses

302. Smallest Rectangle Enclosing Black Pixels

303. Range Sum Query - Immutable

304. Range Sum Query 2D - Immutable

307. Range Sum Query - Mutable

308. Range Sum Query 2D - Mutable

309. Best Time to Buy and Sell Stock with Cooldown

311. Sparse Matrix Multiplication

314. Binary Tree Vertical Order Traversal

315. Count of Smaller Numbers After Self

317. Shortest Distance from All Buildings

318. Maximum Product of Word Lengths

323. Number of Connected Components in an Undirected Graph

325. Maximum Size Subarray Sum Equals k

329. Longest Increasing Path in a Matrix

331. Verify Preorder Serialization of a Binary Tree

334. Increasing Triplet Subsequence

340. Longest Substring with At Most K Distinct Characters

341. Flatten Nested List Iterator

345. Reverse Vowels of a String

346. Moving Average from Data Stream

349. Intersection of Two Arrays

350. Intersection of Two Arrays II

352. Data Stream as Disjoint Intervals

363. Max Sum of Rectangle No Larger Than K

364. Nested List Weight Sum II

366. Find Leaves of Binary Tree

373. Find K Pairs with Smallest Sums

374. Guess Number Higher or Lower

378. Kth Smallest Element in a Sorted Matrix

380. Insert Delete GetRandom O(1)

381. Insert Delete GetRandom O(1) - Duplicates allowed

387. First Unique Character in a String

395. Longest Substring with At Least K Repeating Characters

406. Queue Reconstruction by Height

416. Partition Equal Subset Sum

417. Pacific Atlantic Water Flow

421. Maximum XOR of Two Numbers in an Array

423. Reconstruct Original Digits from English

424. Longest Repeating Character Replacement

426. Convert Binary Search Tree to Sorted Doubly Linked List

428. Serialize and Deserialize N-ary Tree

429. N-ary Tree Level Order Traversal

430. Flatten a Multilevel Doubly Linked List

431. Encode N-ary Tree to Binary Tree

434. Number of Segments in a String

435. Non-overlapping Intervals

438. Find All Anagrams in a String

439. Ternary Expression Parser

442. Find All Duplicates in an Array

446. Arithmetic Slices II - Subsequence

448. Find All Numbers Disappeared in an Array

449. Serialize and Deserialize BST

451. Sort Characters By Frequency

452. Minimum Number of Arrows to Burst Balloons

453. Minimum Moves to Equal Array Elements

462. Minimum Moves to Equal Array Elements II

470. Implement Rand10() Using Rand7()

478. Generate Random Point in a Circle

491. Non-decreasing Subsequences

508. Most Frequent Subtree Sum

510. Inorder Successor in BST II

516. Longest Palindromic Subsequence

521. Longest Uncommon Subsequence I

522. Longest Uncommon Subsequence II

524. Longest Word in Dictionary through Deleting

530. Minimum Absolute Difference in BST

535. Encode and Decode TinyURL

536. Construct Binary Tree from String

537. Complex Number Multiplication

538. Convert BST to Greater Tree

540. Single Element in a Sorted Array

548. Split Array with Equal Sum

549. Binary Tree Longest Consecutive Sequence II

551. Student Attendance Record I

552. Student Attendance Record II

557. Reverse Words in a String III

559. Maximum Depth of N-ary Tree

562. Longest Line of Consecutive One in Matrix

581. Shortest Unsorted Continuous Subarray

583. Delete Operation for Two Strings

588. Design In-Memory File System

589. N-ary Tree Preorder Traversal

590. N-ary Tree Postorder Traversal

592. Fraction Addition and Subtraction

594. Longest Harmonious Subsequence

599. Minimum Index Sum of Two Lists

600. Non-negative Integers without Consecutive Ones

604. Design Compressed String Iterator

606. Construct String from Binary Tree

609. Find Duplicate File in System

624. Maximum Distance in Arrays

628. Maximum Product of Three Numbers

632. Smallest Range Covering Elements from K Lists

634. Find the Derangement of An Array

635. Design Log Storage System

637. Average of Levels in Binary Tree

643. Maximum Average Subarray I

644. Maximum Average Subarray II

646. Maximum Length of Pair Chain

653. Two Sum IV - Input is a BST

659. Split Array into Consecutive Subsequences

662. Maximum Width of Binary Tree

668. Kth Smallest Number in Multiplication Table

669. Trim a Binary Search Tree

671. Second Minimum Node In a Binary Tree

673. Number of Longest Increasing Subsequence

674. Longest Continuous Increasing Subsequence

688. Knight Probability in Chessboard

689. Maximum Sum of 3 Non-Overlapping Subarrays

693. Binary Number with Alternating Bits

694. Number of Distinct Islands

698. Partition to K Equal Sum Subsets

700. Search in a Binary Search Tree

701. Insert into a Binary Search Tree

702. Search in a Sorted Array of Unknown Size

703. Kth Largest Element in a Stream

708. Insert into a Sorted Circular Linked List

710. Random Pick with Blacklist

712. Minimum ASCII Delete Sum for Two Strings

713. Subarray Product Less Than K

714. Best Time to Buy and Sell Stock with Transaction Fee

718. Maximum Length of Repeated Subarray

719. Find K-th Smallest Pair Distance

720. Longest Word in Dictionary

725. Split Linked List in Parts

727. Minimum Window Subsequence

742. Closest Leaf in a Binary Tree

744. Find Smallest Letter Greater Than Target

750. Number Of Corner Rectangles

774. Minimize Max Distance to Gas Station

775. Global and Local Inversions

783. Minimum Distance Between BST Nodes

786. K-th Smallest Prime Fraction

787. Cheapest Flights Within K Stops

790. Domino and Tromino Tiling

792. Number of Matching Subsequences

793. Preimage Size of Factorial Zeroes Function

795. Number of Subarrays with Bounded Maximum

797. All Paths From Source to Target

798. Smallest Rotation with Highest Score

802. Find Eventual Safe States

806. Number of Lines To Write String

807. Max Increase to Keep City Skyline

821. Shortest Distance to a Character

823. Binary Trees With Factors

826. Most Profit Assigning Work

830. Positions of Large Groups

842. Split Array into Fibonacci Sequence

845. Longest Mountain in Array

847. Shortest Path Visiting All Nodes

849. Maximize Distance to Closest Person

852. Peak Index in a Mountain Array

857. Minimum Cost to Hire K Workers

862. Shortest Subarray with Sum at Least K

863. All Nodes Distance K in Binary Tree

864. Shortest Path to Get All Keys

865. Smallest Subtree with all the Deepest Nodes

871. Minimum Number of Refueling Stops

873. Length of Longest Fibonacci Subsequence

876. Middle of the Linked List

882. Reachable Nodes In Subdivided Graph

883. Projection Area of 3D Shapes

884. Uncommon Words from Two Sentences

891. Sum of Subsequence Widths

894. All Possible Full Binary Trees

897. Increasing Order Search Tree

902. Numbers At Most N Given Digit Set

914. X of a Kind in a Deck of Cards

915. Partition Array into Disjoint Intervals

918. Maximum Sum Circular Subarray

919. Complete Binary Tree Inserter

920. Number of Music Playlists

921. Minimum Add to Make Parentheses Valid

926. Flip String to Monotone Increasing

928. Minimize Malware Spread II

930. Binary Subarrays With Sum

937. Reorder Data in Log Files

943. Find the Shortest Superstring

944. Delete Columns to Make Sorted

945. Minimum Increment to Make Array Unique

947. Most Stones Removed with Same Row or Column

949. Largest Time for Given Digits

950. Reveal Cards In Increasing Order

951. Flip Equivalent Binary Trees

952. Largest Component Size by Common Factor

953. Verifying an Alien Dictionary

957. Prison Cells After N Days

958. Check Completeness of a Binary Tree

960. Delete Columns to Make Sorted III

961. N-Repeated Element in Size 2N Array

967. Numbers With Same Consecutive Differences

971. Flip Binary Tree To Match Preorder Traversal

973. K Closest Points to Origin

974. Subarray Sums Divisible by K

976. Largest Perimeter Triangle

977. Squares of a Sorted Array

978. Longest Turbulent Subarray

979. Distribute Coins in Binary Tree

981. Time Based Key-Value Store

984. String Without AAA or BBB

985. Sum of Even Numbers After Queries

986. Interval List Intersections

987. Vertical Order Traversal of a Binary Tree

988. Smallest String Starting From Leaf

989. Add to Array-Form of Integer

990. Satisfiability of Equality Equations

1004. Max Consecutive Ones III

1007. Minimum Domino Rotations For Equal Row

1008. Construct Binary Search Tree from Preorder Traversal

1009. Complement of Base 10 Integer

1010. Pairs of Songs With Total Durations Divisible by 60

1011. Capacity To Ship Packages Within D Days

1015. Smallest Integer Divisible by K

1019. Next Greater Node In Linked List

1022. Sum of Root To Leaf Binary Numbers

1026. Maximum Difference Between Node and Ancestor

1027. Longest Arithmetic Subsequence

1044. Longest Duplicate Substring

1047. Remove All Adjacent Duplicates In String

1055. Shortest Way to Form String

1059. All Paths from Source Lead to Destination

1060. Missing Element in Sorted Array

1061. Lexicographically Smallest Equivalent String

1062. Longest Repeating Substring

1071. Greatest Common Divisor of Strings

1074. Number of Submatrices That Sum to Target

1091. Shortest Path in Binary Matrix

1100. Find K-Length Substrings With No Repeated Characters

1101. The Earliest Moment When Everyone Become Friends

1102. Path With Maximum Minimum Value

1125. Smallest Sufficient Team

1129. Shortest Path with Alternating Colors

1135. Connecting Cities With Minimum Cost

1143. Longest Common Subsequence

1150. Check If a Number Is Majority Element in a Sorted Array

1151. Minimum Swaps to Group All 1's Together

1153. String Transforms Into Another String

1155. Number of Dice Rolls With Target Sum

1161. Maximum Level Sum of a Binary Tree

1162. As Far from Land as Possible

1167. Minimum Cost to Connect Sticks

1168. Optimize Water Distribution in a Village

1178. Number of Valid Words for Each Puzzle

1180. Count Substrings with Only One Distinct Letter

1182. Shortest Distance to Target Color

1187. Make Array Strictly Increasing

1189. Maximum Number of Balloons

1192. Critical Connections in a Network

1196. How Many Apples Can You Put into the Basket

1198. Find Smallest Common Element in All Rows

1200. Minimum Absolute Difference

1202. Smallest String With Swaps

1207. Unique Number of Occurrences

1209. Remove All Adjacent Duplicates in String II

1213. Intersection of Three Sorted Arrays

1217. Minimum Cost to Move Chips to The Same Position

1218. Longest Arithmetic Subsequence of Given Difference

1220. Count Vowels Permutation

1228. Missing Number In Arithmetic Progression

1232. Check If It Is a Straight Line

1235. Maximum Profit in Job Scheduling

1239. Maximum Length of a Concatenated String with Unique Characters

1249. Minimum Remove to Make Valid Parentheses

1254. Number of Closed Islands

1259. Handshakes That Don't Cross

1268. Search Suggestions System

1274. Number of Ships in a Rectangle

1275. Find Winner on a Tic Tac Toe Game

1283. Find the Smallest Divisor Given a Threshold

1284. Minimum Number of Flips to Convert Binary Matrix to Zero Matrix

1286. Iterator for Combination

1288. Remove Covered Intervals

1290. Convert Binary Number in a Linked List to Integer

1293. Shortest Path in a Grid with Obstacles Elimination

1305. All Elements in Two Binary Search Trees

1312. Minimum Insertion Steps to Make a String Palindrome

1318. Minimum Flips to Make a OR b Equal to c

1319. Number of Operations to Make Network Connected

1329. Sort the Matrix Diagonally

1332. Remove Palindromic Subsequences

1335. Minimum Difficulty of a Job Schedule

1337. The K Weakest Rows in a Matrix

1338. Reduce Array Size to The Half

1339. Maximum Product of Splitted Binary Tree

1342. Number of Steps to Reduce a Number to Zero

1344. Angle Between Hands of a Clock

1351. Count Negative Numbers in a Sorted Matrix

1354. Construct Target Array With Multiple Sums

1359. Count All Valid Pickup and Delivery Options

1372. Longest ZigZag Path in a Binary Tree

1376. Time Needed to Inform All Employees

1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree

1383. Maximum Performance of a Team

1394. Find Lucky Integer in an Array

1396. Design Underground System

1413. Minimum Value to Get Positive Step by Step Sum

1423. Maximum Points You Can Obtain from Cards

1428. Leftmost Column with at Least a One

1431. Kids With the Greatest Number of Candies

1437. Check If All 1's Are at Least Length K Places Away

1443. Minimum Time to Collect All Apples in a Tree

1444. Number of Ways of Cutting a Pizza

1448. Count Good Nodes in Binary Tree

1456. Maximum Number of Vowels in a Substring of Given Length

1457. Pseudo-Palindromic Paths in a Binary Tree

1461. Check If a String Contains All Binary Codes of Size K

1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts

1466. Reorder Routes to Make All Paths Lead to the City Zero

1474. Delete N Nodes After M Nodes of a Linked List

1485. Clone Binary Tree With Random Pointer

1491. Average Salary Excluding the Minimum and Maximum Salary

1493. Longest Subarray of 1's After Deleting One Element

1498. Number of Subsequences That Satisfy the Given Sum Condition

1502. Can Make Arithmetic Progression From Sequence

1514. Path with Maximum Probability

1519. Number of Nodes in the Sub-Tree With the Same Label

1523. Count Odd Numbers in an Interval Range

1533. Find the Index of the Large Integer

1538. Guess the Majority in a Hidden Array

1539. Kth Missing Positive Number

1547. Minimum Cost to Cut a Stick

1548. The Most Similar Path in a Graph

1551. Minimum Operations to Make Array Equal

1557. Minimum Number of Vertices to Reach All Nodes

1564. Put Boxes Into the Warehouse I

1569. Number of Ways to Reorder Array to Get Same BST

1570. Dot Product of Two Sparse Vectors

1575. Count All Possible Routes

1578. Minimum Time to Make Rope Colorful

1579. Remove Max Number of Edges to Keep Graph Fully Traversable

1584. Min Cost to Connect All Points

1586. Binary Search Tree Iterator II

1588. Sum of All Odd Length Subarrays

1601. Maximum Number of Achievable Transfer Requests

1602. Find Nearest Right Node in Binary Tree

1606. Find Servers That Handled Most Number of Requests

1626. Best Team With No Conflicts

1631. Path With Minimum Effort

1632. Rank Transform of a Matrix

1639. Number of Ways to Form a Target String Given a Dictionary

1640. Check Array Formation Through Concatenation

1641. Count Sorted Vowel Strings

1642. Furthest Building You Can Reach

1646. Get Maximum in Generated Array

1647. Minimum Deletions to Make Character Frequencies Unique

1649. Create Sorted Array through Instructions

1657. Determine if Two Strings Are Close

1658. Minimum Operations to Reduce X to Zero

1662. Check If Two String Arrays are Equivalent

1663. Smallest String With A Given Numeric Value

1673. Find the Most Competitive Subsequence

1675. Minimize Deviation in Array

1679. Max Number of K-Sum Pairs

1680. Concatenation of Consecutive Binary Numbers

1689. Partitioning Into Minimum Number Of Deci-Binary Numbers

1697. Checking Existence of Edge Length Limited Paths

1704. Determine if String Halves Are Alike

1706. Where Will the Ball Fall

1710. Maximum Units on a Truck

1721. Swapping Nodes in a Linked List

1732. Find the Highest Altitude

1751. Maximum Number of Events That Can Be Attended II

1762. Buildings With an Ocean View

1768. Merge Strings Alternately

1770. Maximum Score from Performing Multiplication Operations

1799. Maximize Score After N Operations

1802. Maximum Value at a Given Index in a Bounded Array

1822. Sign of the Product of an Array

1832. Check if the Sentence Is Pangram

1855. Maximum Distance Between a Pair of Values

1857. Largest Color Value in a Directed Graph

1870. Minimum Speed to Arrive on Time

1874. Minimize Product Sum of Two Arrays

1926. Nearest Exit from Entrance in Maze

1937. Maximum Number of Points with Cost

1962. Remove Stones to Minimize the Total

1964. Find the Longest Valid Obstacle Course at Each Position

1970. Last Day Where You Can Still Cross

1971. Find if Path Exists in Graph

1996. The Number of Weak Characters in the Game

2007. Find Original Array From Doubled Array

2024. Maximize the Confusion of an Exam

2045. Second Minimum Time to Reach Destination

2090. K Radius Subarray Averages

2095. Delete the Middle Node of a Linked List

2101. Detonate the Maximum Bombs

2130. Maximum Twin Sum of a Linked List

2131. Longest Palindrome by Concatenating Two Letter Words

2136. Earliest Possible Day of Full Bloom

2140. Solving Questions With Brainpower

2141. Maximum Running Time of N Computers

2187. Minimum Time to Complete Trips

2214. Minimum Health to Beat Game

2215. Find the Difference of Two Arrays

2218. Maximum Value of K Coins From Piles

2225. Find Players With Zero or One Losses

2244. Minimum Rounds to Complete All Tasks

2246. Longest Path With Different Adjacent Characters

2256. Minimum Average Difference

2272. Substring With Largest Variance

2279. Maximum Bags With Full Capacity of Rocks

2281. Sum of Total Strength of Wizards

2300. Successful Pairs of Spells and Potions

2305. Fair Distribution of Cookies

2316. Count Unreachable Pairs of Nodes in an Undirected Graph

2328. Number of Increasing Paths in a Grid

2336. Smallest Number in Infinite Set

2348. Number of Zero-Filled Subarrays

2352. Equal Row and Column Pairs

2359. Find Closest Node to Given Two Nodes

2360. Longest Cycle in a Graph

2368. Reachable Nodes With Restrictions

2389. Longest Subsequence With Limited Sum

2390. Removing Stars From a String

2405. Optimal Partition of String

2439. Minimize Maximum of Array

2444. Count Subarrays With Fixed Bounds

2448. Minimum Cost to Make Array Equal

2462. Total Cost to Hire K Workers

2466. Count Ways To Build Good Strings

2477. Minimum Fuel Cost to Report to the Capital

2492. Minimum Score of a Path Between Two Cities

2542. Maximum Subsequence Score

Premium Problems

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About 10% of leetcode problem are premium-only.

Open the below links in a new tab with CNTRL + Click or COMMAND + Click.

157. Read N Characters Given Read4

158. Read N Characters Given read4 II - Call Multiple Times

159. Longest Substring with At Most Two Distinct Characters

170. Two Sum III - Data structure design

186. Reverse Words in a String II

244. Shortest Word Distance II

245. Shortest Word Distance III

247. Strobogrammatic Number II

248. Strobogrammatic Number III

255. Verify Preorder Sequence in Binary Search Tree

267. Palindrome Permutation II

270. Closest Binary Search Tree Value

271. Encode and Decode Strings

272. Closest Binary Search Tree Value II

298. Binary Tree Longest Consecutive Sequence

302. Smallest Rectangle Enclosing Black Pixels

308. Range Sum Query 2D - Mutable

311. Sparse Matrix Multiplication

314. Binary Tree Vertical Order Traversal

317. Shortest Distance from All Buildings

323. Number of Connected Components in an Undirected Graph

325. Maximum Size Subarray Sum Equals k

340. Longest Substring with At Most K Distinct Characters

346. Moving Average from Data Stream

358. Rearrange String k Distance Apart

364. Nested List Weight Sum II

366. Find Leaves of Binary Tree

411. Minimum Unique Word Abbreviation

426. Convert Binary Search Tree to Sorted Doubly Linked List

428. Serialize and Deserialize N-ary Tree

431. Encode N-ary Tree to Binary Tree

439. Ternary Expression Parser

465. Optimal Account Balancing

471. Encode String with Shortest Length

510. Inorder Successor in BST II

536. Construct Binary Tree from String

548. Split Array with Equal Sum

549. Binary Tree Longest Consecutive Sequence II

555. Split Concatenated Strings

562. Longest Line of Consecutive One in Matrix

588. Design In-Memory File System

604. Design Compressed String Iterator

624. Maximum Distance in Arrays

634. Find the Derangement of An Array

635. Design Log Storage System

642. Design Search Autocomplete System

644. Maximum Average Subarray II

694. Number of Distinct Islands

702. Search in a Sorted Array of Unknown Size

708. Insert into a Sorted Circular Linked List

711. Number of Distinct Islands II

727. Minimum Window Subsequence

742. Closest Leaf in a Binary Tree

750. Number Of Corner Rectangles

774. Minimize Max Distance to Gas Station

1055. Shortest Way to Form String

1058. Minimize Rounding Error to Meet Target

1059. All Paths from Source Lead to Destination

1060. Missing Element in Sorted Array

1062. Longest Repeating Substring

1063. Number of Valid Subarrays

1085. Sum of Digits in the Minimum Number

1100. Find K-Length Substrings With No Repeated Characters

1101. The Earliest Moment When Everyone Become Friends

1102. Path With Maximum Minimum Value

1118. Number of Days in a Month

1119. Remove Vowels from a String

1121. Divide Array Into Increasing Sequences

1135. Connecting Cities With Minimum Cost

1150. Check If a Number Is Majority Element in a Sorted Array

1151. Minimum Swaps to Group All 1's Together

1152. Analyze User Website Visit Pattern

1153. String Transforms Into Another String

1167. Minimum Cost to Connect Sticks

1168. Optimize Water Distribution in a Village

1180. Count Substrings with Only One Distinct Letter

1182. Shortest Distance to Target Color

1196. How Many Apples Can You Put into the Basket

1198. Find Smallest Common Element in All Rows

1199. Minimum Time to Build Blocks

1213. Intersection of Three Sorted Arrays

1228. Missing Number In Arithmetic Progression

1259. Handshakes That Don't Cross

1265. Print Immutable Linked List in Reverse

1274. Number of Ships in a Rectangle

1428. Leftmost Column with at Least a One

1430. Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree

1469. Find All The Lonely Nodes

1474. Delete N Nodes After M Nodes of a Linked List

1485. Clone Binary Tree With Random Pointer

1500. Design a File Sharing System

1516. Move Sub-Tree of N-Ary Tree

1533. Find the Index of the Large Integer

1538. Guess the Majority in a Hidden Array

1548. The Most Similar Path in a Graph

1554. Strings Differ by One Character

1564. Put Boxes Into the Warehouse I

1570. Dot Product of Two Sparse Vectors

1580. Put Boxes Into the Warehouse II

1586. Binary Search Tree Iterator II

1597. Build Binary Expression Tree From Infix Expression

1602. Find Nearest Right Node in Binary Tree

1612. Check If Two Expression Trees are Equivalent

1618. Maximum Font to Fit a Sentence in a Screen

1628. Design an Expression Tree With Evaluate Function

1634. Add Two Polynomials Represented as Linked Lists

1644. Lowest Common Ancestor of a Binary Tree II

1650. Lowest Common Ancestor of a Binary Tree III

1666. Change the Root of a Binary Tree

1676. Lowest Common Ancestor of a Binary Tree IV

1682. Longest Palindromic Subsequence II

1692. Count Ways to Distribute Candies

1698. Number of Distinct Substrings in a String

1708. Largest Subarray Length K

1714. Sum Of Special Evenly-Spaced Elements In Array

1724. Checking Existence of Edge Length Limited Paths II

1730. Shortest Path to Get Food

1740. Find Distance in a Binary Tree

1746. Maximum Subarray Sum After One Operation

1756. Design Most Recently Used Queue

1762. Buildings With an Ocean View

1772. Sort Features by Popularity

1778. Shortest Path in a Hidden Grid

1788. Maximize the Beauty of the Garden

1794. Count Pairs of Equal Substrings With Minimum Difference

1804. Implement Trie II (Prefix Tree)

1810. Minimum Path Cost in a Hidden Grid

1820. Maximum Number of Accepted Invitations

1836. Remove Duplicates From an Unsorted Linked List

1842. Next Palindrome Using Same Digits

1852. Distinct Numbers in Each Subarray

1858. Longest Word With All Prefixes

1868. Product of Two Run-Length Encoded Arrays

1874. Minimize Product Sum of Two Arrays

1885. Count Pairs in Two Arrays

1902. Depth of BST Given Insertion Order

1918. Kth Smallest Subarray Sum

1933. Check if String Is Decomposable Into Value-Equal Substrings

1940. Longest Common Subsequence Between Sorted Arrays

1950. Maximum of Minimum Values in All Subarrays

1956. Minimum Time For K Virus Variants to Spread

1966. Binary Searchable Numbers in an Unsorted Array

1973. Count Nodes Equal to Sum of Descendants

1983. Widest Pair of Indices With Equal Range Sum

1989. Maximum Number of People That Can Be Caught in Tag

1999. Smallest Greater Multiple Made of Two Digits

2005. Subtree Removal Game with Fibonacci Tree

2015. Average Height of Buildings in Each Segment

2021. Brightest Position on Street

2031. Count Subarrays With More Ones Than Zeros

2036. Maximum Alternating Subarray Sum

2046. Sort Linked List Already Sorted Using Absolute Values

2052. Minimum Cost to Separate Sentence Into Rows

2061. Number of Spaces Cleaning Robot Cleaned

2067. Number of Equal Count Substrings

2077. Paths in Maze That Lead to Same Room

2083. Substrings That Begin and End With the Same Letter

2093. Minimum Cost to Reach City With Discounts

2098. Subsequence of Size K With the Largest Even Sum

2107. Number of Unique Flavors After Sharing K Candies

2113. Elements in Array After Removing and Replacing Elements

2123. Minimum Operations to Remove Adjacent Ones in Matrix

2128. Remove All Ones With Row and Column Flips

2137. Pour Water Between Buckets to Make Water Levels Equal

2143. Choose Numbers From Two Arrays in Range

2152. Minimum Number of Lines to Cover Points

2158. Amount of New Area Painted Each Day

2168. Unique Substrings With Equal Digit Frequency

2174. Remove All Ones With Row and Column Flips II

2184. Number of Ways to Build Sturdy Brick Wall

2189. Number of Ways to Build House of Cards

2198. Number of Single Divisor Triplets

2204. Distance to a Cycle in Undirected Graph

2214. Minimum Health to Beat Game

2219. Maximum Sum Score of Array

2229. Check if an Array Is Consecutive

2237. Count Positions on Street With Required Brightness

2247. Maximum Cost of Trip With K Highways

2254. Design Video Sharing Platform

2263. Make Array Non-decreasing or Non-increasing

2268. Minimum Number of Keypresses

2277. Closest Node to Path in Tree

2282. Number of People That Can Be Seen in a Grid

2291. Maximum Profit From Trading Stocks

2307. Check for Contradictions in Equations

2313. Minimum Flips in Binary Tree to Get Result

2323. Find Minimum Time to Finish All Jobs II

2340. Minimum Adjacent Swaps to Make a Valid Array

2345. Finding the Number of Visible Mountains

2355. Maximum Number of Books You Can Take

2361. Minimum Costs Using the Train Line

2371. Minimize Maximum Value in a Grid

2378. Choose Edges to Maximize Score in a Tree

2387. Median of a Row Wise Sorted Matrix

2393. Count Strictly Increasing Subarrays

2403. Minimum Time to Kill All Monsters

2422. Merge Operations to Turn Array Into a Palindrome

2431. Maximize Total Tastiness of Purchased Fruits

2436. Minimum Split Into Subarrays With GCD Greater Than One

2445. Number of Nodes With Value One

2450. Number of Distinct Binary Strings After Applying Operations

2459. Sort Array by Moving Items to Empty Space

2464. Minimum Subarrays in a Valid Split

2473. Minimum Cost to Buy Apples

2479. Maximum XOR of Two Non-Overlapping Subtrees

2489. Number of Substrings With Fixed Ratio

2495. Number of Subarrays Having Even Product

2505. Bitwise OR of All Subsequence Sums

2510. Check if There is a Path With Equal Number of 0's And 1's

2519. Count the Number of K-Big Indices

2524. Maximum Frequency Score of a Subarray

2533. Number of Good Binary Strings

2534. Time Taken to Cross the Door

2539. Count the Number of Good Subsequences

2548. Maximum Price to Fill a Bag

2557. Maximum Number of Integers to Choose From a Range II

2599. Make the Prefix Sum Non-negative

2604. Minimum Time to Eat All Grains

2638. Count the Number of K-Free Subsets

2655. Find Maximal Uncovered Ranges

2674. Split a Circular Linked List

2689. Extract Kth Character From The Rope Tree

2702. Minimum Operations to Make Numbers Non-positive

2714. Find Shortest Path with K Hops

About

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This project uses selenium to programmatically screenshot all editorials and problems.

Please report any Issues, such as

Blurry images
Improperly cropped images
Problems that I skipped over

Potential future improvements for the project include:

Screenshot the starting code for premium problems
Screenshot the editorials for multiple languages (C++, Java, Python) instead of just the default of C++
Make sure that the code in the editorials is fully shown (sometimes it is hidden by scroll)
Regular updates to include new problems

I am done working on the project for now, but if this becomes popular and people start using it, I may do more. If you want a feature, open an Issue, and I may do it. Please reach out if you are interested in contributing.

Note:
When creating issues, note that some problems that leetcode says have editorials, actually do not:

145,Binary Tree Postorder Traversal,https://leetcode.com/problems/binary-tree-postorder-traversal/solution
264,Ugly Number II,https://leetcode.com/problems/ugly-number-ii/solution/
351,Android Unlock Patterns,https://leetcode.com/problems/android-unlock-patterns/solution
459,Repeated Substring Pattern,https://leetcode.com/problems/repeated-substring-pattern/solution
519,Random Flip Matrix,https://leetcode.com/problems/random-flip-matrix/solution
564,Find the Closest Palindrome,https://leetcode.com/problems/find-the-closest-palindrome/solution
661,Image Smoother,https://leetcode.com/problems/image-smoother/solution
675,Cut Off Trees for Golf Event,https://leetcode.com/problems/cut-off-trees-for-golf-event/solution
676,Implement Magic Dictionary,https://leetcode.com/problems/implement-magic-dictionary/solution
711,Number of Distinct Islands II,https://leetcode.com/problems/number-of-distinct-islands-ii/solution
730,Count Different Palindromic Subsequences,https://leetcode.com/problems/count-different-palindromic-subsequences/solution
749,Contain Virus,https://leetcode.com/problems/contain-virus/solution
762,Prime Number of Set Bits in Binary Representation,https://leetcode.com/problems/prime-number-of-set-bits-in-binary-representation/solution
773,Sliding Puzzle,https://leetcode.com/problems/sliding-puzzle/solution
779,K-th Symbol in Grammar,https://leetcode.com/problems/k-th-symbol-in-grammar/solution
818,Race Car,https://leetcode.com/problems/race-car/solution
840,Magic Squares In Grid,https://leetcode.com/problems/magic-squares-in-grid/solution
861,Score After Flipping Matrix,https://leetcode.com/problems/score-after-flipping-matrix/solution
874,Walking Robot Simulation,https://leetcode.com/problems/walking-robot-simulation/solution
898,Bitwise ORs of Subarrays,https://leetcode.com/problems/bitwise-ors-of-subarrays/solution
939,Minimum Area Rectangle,https://leetcode.com/problems/minimum-area-rectangle/solution
992,Subarrays with K Different Integers,https://leetcode.com/problems/subarrays-with-k-different-integers/solution

harsh9709 / leetcode-screenshotter Goto Github PK

leetcode-screenshotter's Introduction

Leetcode Screenshotter

Table of Contents

Editorials