Files

1. Two Sum
100. Same Tree
1002. Find Common Characters
1003. Check If Word Is Valid After Substitutions
1008. Construct Binary Search Tree from Preorder Traversal
1009. Complement of Base 10 Integer
101. Symmetric Tree
1016. Binary String With Substrings Representing 1 To N
1019. Next Greater Node In Linked List
102. Binary Tree Level Order Traversal
1020. Number of Enclaves
1021. Remove Outermost Parentheses
1022. Sum of Root To Leaf Binary Numbers
1025. Divisor Game
1026. Maximum Difference Between Node and Ancestor
- Solution.py
1028. Recover a Tree From Preorder Traversal
103. Binary Tree Zigzag Level Order Traversal
1038. Binary Search Tree to Greater Sum Tree
104. Maximum Depth of Binary Tree
1046. Last Stone Weight
1047. Remove All Adjacent Duplicates In String
105. Construct Binary Tree from Preorder and Inorder Traversal
1050. Actors and Directors Who Cooperated At Least Three Times
1051. Height Checker
106. Construct Binary Tree from Inorder and Postorder Traversal
1068. Product Sales Analysis I
107. Binary Tree Level Order Traversal II
1078. Occurrences After Bigram
1079. Letter Tile Possibilities
108. Convert Sorted Array to Binary Search Tree
1080. Insufficient Nodes in Root to Leaf Paths
1089. Duplicate Zeros
109. Convert Sorted List to Binary Search Tree
11. Container With Most Water
110. Balanced Binary Tree
1103. Distribute Candies to People
1106. Parsing A Boolean Expression
1108. Defanging an IP Address
111. Minimum Depth of Binary Tree
1110. Delete Nodes And Return Forest
112. Path Sum
1122. Relative Sort Array
1123. Lowest Common Ancestor of Deepest Leaves
113. Path Sum II
1137. N-th Tribonacci Number
1138. Alphabet Board Path
114. Flatten Binary Tree to Linked List
1143. Longest Common Subsequence
1148. Article Views I
1154. Day of the Year
116. Populating Next Right Pointers in Each Node
1160. Find Words That Can Be Formed by Characters
1161. Maximum Level Sum of a Binary Tree
117. Populating Next Right Pointers in Each Node II
1170. Compare Strings by Frequency of the Smallest Character
118. Pascal's Triangle
1189. Maximum Number of Balloons
119. Pascal's Triangle II
1190. Reverse Substrings Between Each Pair of Parentheses
12. Integer to Roman
1200. Minimum Absolute Difference
1207. Unique Number of Occurrences
121. Best Time to Buy and Sell Stock
1217. Minimum Cost to Move Chips to The Same Position
1221. Split a String in Balanced Strings
1232. Check If It Is a Straight Line
1233. Remove Sub-Folders from the Filesystem
1248. Count Number of Nice Subarrays
1249. Minimum Remove to Make Valid Parentheses
125. Valid Palindrome
1261. Find Elements in a Contaminated Binary Tree
1267. Count Servers that Communicate
1281. Subtract the Product and Sum of Digits of an Integer
1282. Group the People Given the Group Size They Belong To
1287. Element Appearing More Than 25% In Sorted Array
129. Sum Root to Leaf Numbers
1290. Convert Binary Number in a Linked List to Integer
1291. Sequential Digits
1295. Find Number with Even Number of DIgits
1296. Divide Array in Sets of K Consecutive Numbers
1299. Replace Elements with Greatest Element on Right Side
13. Roman to Integer
130. Surrounded Regions
1302. Deepest Leaves Sum
1304. Find N Unique Integers Sum up to Zero
1305. All Elements in Two Binary Search Trees
1309. Decrypt String from Alphabet to Integer Mapping
1310. XOR Queries of a Subarray
1313. Decompress Run-Length Encoded List
1315. Sum of Nodes with Even-Valued Grandparent
1318. Minimum Flips to Make a OR b Equal to c
1323. Maximum 69 Number
1324. Print Words Vertically
1325. Delete Leaves With a Given Value
1327. List the Products Ordered in a Period
1328. Break a Palindrome
1329. Sort the Matrix Diagonally
133. Clone Graph
1331. Rank Transform of an Array
1338. Reduce Array Size to The Half
1342. Number of Steps to Reduce a Number to Zero
1346. Check If N and Its Double Exist
1347. Minimum Number of Steps to Make Two Strings Anagram
1351. Count Negative Numbers in a Sorted Matrix
1356. Sort Integers by The Number of 1 Bits
1357. Apply Discount Every n Orders
136. Single Number
1365. How Many Numbers Are Smaller Than the Current Number
1367. Linked List in Binary Tree
137. Single Number II
1370. Increasing Decreasing String
1374. Generate a String With Characters That Have Odd Counts
1378. Replace Employee ID With The Unique Identifier
1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree
1380. Lucky Numbers in a Matrix
1381. Design a Stack With Increment Operation
1382. Balance a Binary Search Tree
1389. Create Target Array in the Given Order
1394. Find Lucky Integer in an Array
14. Longest Common Prefix
1400. Construct K Palindrome Strings
1403. Minimum Subsequence in Non-Increasing Order
1404. Number of Steps to Reduce a Number in Binary Representation to One
1408. String Matching in an Array
141. Linked List Cycle
1413. Minimum Value to Get Positive Step by Step Sum
1415. The k-th Lexicographical String of All Happy Strings of Length n
142. Linked List Cycle II
1422. Maximum Score After Splitting a String
1424. Diagonal Traverse II
143. Reorder List
1431. Kids With the Greatest Number of Candies
1433. Check If a String Can Break Another String
1436. Destination City
144. Binary Tree Preorder Traversal
1441. Build an Array With Stack Operations
1446. Consecutive Characters
1448. Count Good Nodes in Binary Tree
145. Binary Tree Postorder Traversal
1450. Number of Students Doing Homework at a Given Time
1451. Rearrange Words in a Sentence
1455. Check If a Word Occurs As a Prefix of Any Word in a Sentence
1456. Maximum Number of Vowels in a Substring of Given Length
1457. Pseudo-Palindromic Paths in a Binary Tree
1460. Make Two Arrays Equal by Reversing Subarrays
1464. Maximum Product of Two Elements in an Array
1470. Shuffle the Array
1475. Final Prices With a Special Discount in a Shop
148. Sort List
1480. Running Sum of 1D Array
1481. Least Number of Unique Integers after K Removals
1486. Xor Operation in an Array
1491. Average Salary Excluding the Minimum and Maximum Salary
1492. The kth Factor of n
1496. Path Crossing
1497. Check If Array Pairs Are Divisible by k
150. Evaluate Reverse Polish Notation
1502. Can Make Arithmetic Progression From Sequence
1507. Reformat Date
1508. Range Sum of Sorted Subarray Sums
151. Reverse Words in a String
1512. Number of Good Pairs
1514. Path with Maximum Probability
1518. Water Bottles
1523. Count Odd Number in an Interval Range
1525. Number of Good Ways to Split a String
1528. Shuffle String
1529. Minimum Suffix Flips
1535. Find the Winner of an Array Game
1544. Make The String Great
1545. Find Kth Bit in Nth Binary String
155. Min Stack
1550. Three Consecutive Odds
1551. Minimum Operations to Make Array Equal
1556. Thousand Separator
1557. Minimum Number of Vertices to Reach All Nodes
1561. Maximum Number of Coins You Can Get
1572. Matrix Diagonal Sum
1576. Replace All 's to Avoid Consecutive Repeating Characters
1582. Special Positions in a Binary Matrix
1588. Sum of All Odd Length Subarrays
1592. Rearrange Spaces Between Words
1598. Crawler Log Folder
160. Intersection of Two Linked Lists
1603. Design Parking System
1605. Find Valid Matrix Given Row and Column Sums
1608. Special Array With X Elements Greater Than or Equal X
1609. Even Odd Tree
1614. Maximum Nesting Depth of the Parentheses
1615. Maximal Network Rank
162. Find Peak Element
1624. Largest Substring Between Two Equal Characters
1629. Slowest Key
1630. Arithmetic Subarrays
1636. Sort Array by Increasing Frequency
164. Maximum Gap
1646. Get Maximum in Generated Array
165. Compare Version Numbers
1662. Check If Two String Arrays are Equivalent
1663. Smallest String With A Given Numeric Value
1668. Maximum Repeating Substring
1669. Merge In Between Linked Lists
167. Two Sum II - Input Array Is Sorted
1672. Richest Customer Wealth
1678. Goal Parser Interpretation
1683. Invalid Tweets
1684. Count the Number of Consistent Strings
1685. Sum of Absolute Differences in a Sorted Array
1688. Count of Matches in Tournament
1689. Partitioning Into Minimum Number Of Deci-Binary Numbers
169. Majority Element
1694. Reformat Phone Number
17. Letter Combinations of a Phone Number
1700. Number of Students Unable to Eat Lunch
1701. Average Waiting Time
1704. Determine if String Halves Are Alike
171. Excel Sheet Column Number
1710. Maximum Units on a Truck
1716. Calculate Money in Leetcode Bank
1720. Decode XORed Array
1721. Swapping Nodes in a Linked List
173. Binary Search Tree Iterator
1732. Find the Highest Altitude
1736. Latest Time by Replacing Hidden Digits
1741. Find Total Time Spent by Each Employee
1742. Maximum Number of Balls in a Box
1748. Sum of Unique Elements
175. Combine Two Tables
1750. Minimum Length of String After Deleting Similar Ends
1752. Check if Array Is Sorted and Rotated
1753. Maximum Score From Removing Stones
1757. Recyclable and Low Fat Products
1758. Minimum Changes To Make Alternating Binary String
1768. Merge Strings Alternately
1769. Minimum Number of Operations to Move All Balls to Each Box
1773. Count Items Matching a Rule
1790. Check if One String Swap Can Make Strings Equal
1791. Find Center of Star Graph
1796. Second Largest Digit in a String
1800. Maximum Ascending Subarray Sum
1805. Number of Different Integers in a String
1807. Evaluate the Bracket Pairs of a String
181. Employees Earning More Than Their Managers
1812. Determine Color of a Chessboard Square
1814. Count Nice Pairs in an Array
1816. Truncate Sentence
182. Duplicate Emails
1822. Sign of the Product of an Array
1823. Find the Winner of the Circular Game
1827. Minimum Operations to Make the Array Increasing
183. Customers Who Never Order
1832. Check if the Sentence Is Pangram
1833. Maximum Ice Cream Bars
1837. Sum of Digits in Base K
1844. Replace All Digits with Characters
1845. Seat Reservation Manager
1859. Sorting the Sentence
1863. Sum of All Subset XOR Totals
1869. Longer Contiguous Segments of Ones than Zeros
1873. Calculate Special Bonus
1876. Substrings of Size Three with Distinct Characters
1877. Minimize Maximum Pair Sum in Array
1880. Check if Word Equals Summation of Two Words
1887. Reduction Operations to Make the Array Elements Equal
189. Rotate Array
1894. Find the Student that Will Replace the Chalk
1897. Redistribute Characters to Make All Strings Equal
19. Remove Nth Node From End of List
1903. Largest Odd Number in String
1905. Count Sub Islands
191. Number of 1 Bits
1910. Remove All Occurrences of a Substring
1913. Maximum Product Difference Between Two Pairs
1920. Build Array from Permutation
1929. Concatnation of Array
1935. Maximum Number of Words You Can Type
1941. Check if All Characters Have Equal Number of Occurrences
1945. Sum of Digits of String After Convert
1952. Three Divisors
1957. Delete Characters to Make Fancy String
1961. Check If String Is a Prefix of Array
1967. Number of Strings That Appear as Substrings in Word
1971. Find if Path Exists in Graph
1974. Minimum Time to Type Word Using Special Typewriter
1979. Find Greatest Common Divisor of Array
198. House Robber
1980. Find Unique Binary String
199. Binary Tree Right Side View
1991. Find the Middle Index in Array
1992. Find All Groups of Farmland
2. Add Two Numbers
20. Valid Parentheses
200. Number of Islands
2000. Reverse Prefix of Word
2006. Count Number of Pairs With Absolute Difference K
2011. Find Value of Variable After Performing Operations
2012. Sum of Beauty in the Array
202. Happy Number
2022. Convert 1D Array into 2D Array
2023. Number of Pairs of Strings With Concatenation Equal to Target
2027. Minimum Moves to Convert String
2028. Find Missing Observations
203. Remove Linked List Elements
2032. Two Out of Three
2037. Minimum Number of Moves to Seat Everyone
2042. Check if Numbers Are Ascending in a Sentence
205. Isomorphic Strings
2053. Kth Distinct String in an Array
2057. Smallest Index With Equal Value
2058. Find the Minimum and Maximum Number of Nodes Between Critical Points
206. Reverse Linked List
2068. Check Whether Two Strings are Almost Equivalent
207. Course Schedule
2073. Time Needed to Buy Tickets
2074. Reverse Nodes in Even Length Groups
2078. Two Furthest Houses With Different Colors
208. Implement Trie (Prefix Tree)
2085. Count Common Words With One Occurrence
2089. Find Target Indices After Sorting Array
2092. Find All People With Secret
2095. Delete the Middle Node of a Linked List
2096. Step-By-Step Directions From a Binary Tree Node to Another
21. Merge Two Sorted Lists
210. Course Schedule II
2103. Rings and Rods
2108. Find First Palindromic String in the Array
2109. Adding Spaces to a String
211. Design Add and Search Words Data Structure
2114. Maximum Number of Words Found in Sentences
2119. A Number After a Double Reversal
2120. Execution of All Suffix Instructions Staying in a Grid
2124. Check if All A's Appears Before All B's
2125. Number of Laser Beams in a Bank
2126. Destroying Asteroids
2129. Capitalize the Title
213. House Robber II
2130. Maximum Twin Sum of a Linked List
2133. Check if Every Row and Column Contains All Numbers
2134. Minimum Swaps to Group All 1's Together II
2138. Divide a String Into Groups of Size k
2144. Minimum Cost of Buying Candies With Discount
2149. Rearrange Array Elements by Sign
215. Kth Largest Element in an Array
2150. Find All Lonely Numbers in the Array
2154. Keep Multiplying Found Values by Two
2160. Minimum Sum of Four Digit Number After Splitting Digits
2161. Partition Array According to Given Pivot
217. Contains Duplicates
2176. Count Equal and Divisible Pairs in an Array
2180. Count Integers With Even Digit Sum
2181. Merge Nodes in Between Zeros
2182. Construct String With Repeat Limit
2185. Counting Words With a Given Prefix
2186. Minimum Number of Steps to Make Two Strings Anagram II
2191. Sort the Jumbled Numbers
2194. Cells in a Range on an Excel Sheet
2196. Create Binary Tree From Descriptions
22. Generate Parentheses
2206. Divide Array Into Equal Pairs
2215. Find the Difference of Two Arrays
222. Count Complete Tree Nodes
2220. Minimum Bit Flips to Convert Number
2225. Find Players With Zero or One Losses
2235. Add Two Integers
2236. Root Equals Sum of Children
224. Basic Calculator
2243. Calculate Digit Sum of a String
2244. Minimum Rounds to Complete All Tasks
2248. Intersection of Multiple Arrays
225. Implement Stack using Queues
2255. Count Prefixes of a Given String
2259. Remove Digit From Number to Maximize Result
226. Invert Binary Tree
2260. Minimum Consecutive Cards to Pick Up
2264. Largest 3-Same-Digit Number in String
2265. Count Nodes Equal to Average of Subtree
2269. Find the K-Beauty of a Number
227. Basic Calculator II
2273. Find Resultant Array After Removing Anagrams
2278. Percentage of Letter in String
228. Summary Ranges
2283. Check if Number Has Equal Digit Count and Digit Value
2287. Rearrange Characters to Make Target String
2288. Apply Discount to Prices
229. Majority Element II
2295. Replace Elements in an Array
23. Merge k Sorted Lists
230. Kth Smallest Element in a BST
2309. Greatest English Letter in Upper and Lower Case
231. Power of Two
2315. Count Asterisks
2319. Check if Matrix Is X-Matrix
232. Implement Queue using Stacks
2325. Decode the Message
2326. Spiral Matrix IV
2331. Evaluate Boolean Binary Tree
2336. Smallest Number in Infinite Set
2337. Move Pieces to Obtain a String
234. Palindrome Linked List
2341. Maximum Number of Pairs in Array
235. Lowest Common Ancestor of a Binary Search Tree
2351. First Letter to Appear Twice
2352. Equal Row and Column Pairs
2356. Number of Unique Subjects Taught by Each Teacher
2357. Make Array Zero by Subtracting Equal Amounts
236. Lowest Common Ancestor of a Binary Tree
2363. Merge Similar Items
237. Delete Node in a Linked List
2373. Largest Local Values in a Matrix
2374. Node With Highest Edge Score
238. Product of Array Except Self
2389. Longest Subsequence With Limited Sum
2390. Removing Stars From a String
2391. Minimum Amount of Time to Collect Garbage
2395. Find Subarrays With Equal Sum
2396. Strictly Palindromic Number
2399. Check Distances Between Same Letters
24. Swap Nodes in Pairs
2404. Most Frequent Even Element
2405. Optimal Partition of String
2413. Smallest Even Multiple
2414. Length of the Longest Alphabetical Continuous Substring
2415. Reverse Odd Levels of Binary Tree
2418. Sort the People
2419. Longest Subarray With Maximum Bitwise AND
242. Valid Anagram
2427. Number of Common Factors
2433. Find The Original Array of Prefix Xor
2441. Largest Positive Integer That Exists With Its Negative
2442. Count Number of Distinct Integers After Reverse Operations
2451. Odd String Difference
2452. Words Within Two Edits of Dictionary
2455. Average Value of Even Numbers That Are Divisible by Three
2460. Apply Operations to an Array
2469. Convert the Temperature
2482. Difference Between Ones and Zeros in Row and Column
2483. Minimum Penalty for a Shop
2485. Find the Pivot Integer
2486. Append Characters to String to Make Subsequence
2487. Remove Nodes From Linked List
2490. Circular Sentence
2491. Divide Players Into Teams of Equal Skill
2496. Maximum Value of a String in an Array
25. Reverse Nodes in k-Group
2520. Count the Digits That Divide a Number
2529. Maximum Count of Positive Integer and Negative Integer
2535. Difference Between Element Sum and Digit Sum of an Array
2540. Minimum Common Value
2544. Alternating Digit Sum
2545. Sort the Students by Their Kth Score
2553. Separate the Digits in an Array
2554. Maximum Number of Integers to Choose From a Range I
2558. Take Gifts From the Richest Pile
2559. Count Vowel Strings in Ranges
2562. Find the Array Concatenation Value
257. Binary Tree Paths
2570. Merge Two 2D Arrays by Summing Values
2574. Left and Right Sum Differences
2578. Split With Minimum Sum
258. Add Digits
2582. Pass the Pillow
2583. Kth Largest Sum in a Binary Tree
2586. Count the Number of Vowel Strings in Range
2595. Number of Even and Odd Bits
26. Remove Duplicates from Sorted Array
2600. K Items With the Maximum Sum
2610. Convert an Array Into a 2D Array With Conditions
2614. Prime In Diagonal
263. Ugly Number
2643. Row With Maximum Ones
2651. Calculate Delayed Arrival Time
2652. Sum Multiples
2656. Maximum Sum With Exactly K Elements
2658. Maximum Number of Fish in a Grid
2661. First Completely Painted Row or Column
2670. Find the Distinct Difference Array
2677. Chunk Array
2678. Number of Senior Citizens
268. Missing Number
2685. Count the Number of Complete Components
2697. Lexicographically Smallest Palindrome
27. Remove Element
2706. Buy Two Chocolates
2710. Remove Trailing Zeros From a String
2716. Minimize String Length
273. Integer to English Words
2733. Neither Minimum nor Maximum
2744. Find Maximum Number of String Pairs
2769. Find the Maximum Achievable Number
2785. Sort Vowels in a String
2788. Split Strings by Separator
2798. Number of Employees Who Met the Target
28. Find the Index of the First Occurrence in a String
2807. Insert Greatest Common Divisors in Linked List
2810. Faulty Keyboard
2816. Double a Number Represented as a Linked List
2824. Count Pairs Whose Sum is Less than Target
2825. Make String a Subsequence Using Cyclic Increments
2828. Check if a String Is an Acronym of Words
283. Move Zeroes
2833. Furthest Point From Origin
2859. Sum of Values at Indices With K Set Bits
2864. Maximum Odd Binary Number
2869. Minimum Operations to Collect Elements
287. Find the Duplicate Number
2870. Minimum Number of Operations to Make Array Empty
2877. Create a DataFrame from List
2878. Get the Size of a DataFrame
2879. Display the First Three Rows
2881. Create a New Column
2884. Modify Columns
2885. Rename Columns
2888. Reshape Data Concatenate
289. Game of Life
2894. Divisible and Non-divisible Sums Difference
2899. Last Visited Integers
290. Word Pattern
2900. Longest Unequal Adjacent Groups Subsequence I
2903. Find Indices With Index and Value Difference I
2913. Subarrays Distinct Element Sum of Squares I
2924. Find Champion II
2942. Find Words Containing Character
2951. Find the Peaks
2956. Find Common Elements Between Two Arrays
2965. Find Missing and Repeated Values
2966. Divide Array Into Arrays With Max Difference
2971. Find Polygon With the Largest Perimeter
2974. Minimum Number Game
2981. Find Longest Special Substring That Occurs Thrice I
299. Bulls and Cows
2997. Minimum Number of Operations to Make Array XOR Equal to K
3. Longest Substring Without Repeating Characters
30. Substring with Concatenation of All Words
3005. Count Elements With Maximum Frequency
3010. Divide an Array Into Subarrays With Minimum Cost I
3011. Find if Array Can Be Sorted
3014. Minimum Number of Pushes to Type Word I
3016. Minimum Number of Pushes to Type Word II
3019. Number of Changing Keys
3028. Ant on the Boundary
303. Range Sum Query - Immutable
3033. Modify the Matrix
3038. Maximum Number of Operations With the Same Score I
3039. Apply Operations to Make String Empty
3042. Count Prefix and Suffix Pairs I
3046. Split the Array
3065. Minimum Operations to Exceed Threshold Value I
3066. Minimum Operations to Exceed Threshold Value II
3069. Distribute Elements Into Two Arrays I
3071. Minimum Operations to Write the Letter Y on a Grid
3074. Apple Redistribution into Boxes
3075. Maximize Happiness of Selected Children
3076. Shortest Uncommon Substring in an Array
3079. Find the Sum of Encrypted Integers
3083. Existence of a Substring in a String and Its Reverse
3084. Count Substrings Starting and Ending with Given Character
3090. Maximum Length Substring With Two Occurrences
3099. Harshad Number
3105. Longest Strictly Increasing or Strictly Decreasing Subarray
3110. Score of a String
3114. Latest Time You Can Obtain After Replacing Characters
3115. Maximum Prime Difference
3120. Count the Number of Special Characters I
3121. Count the Number of Special Characters II
3127. Make a Square with the Same Color
3131. Find the Integer Added to Array I
3136. Valid Word
3137. Minimum Number of Operations to Make Word K-Periodic
3142. Check if Grid Satisfies Conditions
3146. Permutation Difference between Two Strings
3151. Special Array I
3152. Special Array II
3153. Sum of Digit Differences of All Pairs
3158. Find the XOR of Numbers Which Appear Twice
3159. Find Occurrences of an Element in an Array
3160. Find the Number of Distinct Colors Among the Balls
3162. Find the Number of Good Pairs I
3163. String Compression III
3168. Minimum Number of Chairs in a Waiting Room
3174. Clear Digits
3178. Find the Child Who Has the Ball After K Seconds
318. Maximum Product of Word Lengths
3184. Count Pairs That Form a Complete Day I
3185. Count Pairs That Form a Complete Day II
3190. Find Minimum Operations to Make All Elements Divisible by Three
3191. Minimum Operations to Make Binary Array Elements Equal to One I
3192. Minimum Operations to Make Binary Array Elements Equal to One II
3194. Minimum Average of Smallest and Largest Elements
3195. Find the Minimum Area to Cover All Ones I
3200. Maximum Height of a Triangle
3206. Alternating Groups I
3207. Maximum Points After Enemy Battles
3208. Alternating Groups II
3210. Find the Encrypted String
3211. Generate Binary Strings Without Adjacent Zeros
3216. Lexicographically Smallest String After a Swap
3217. Delete Nodes From Linked List Present in Array
322. Coin Change
3222. Find the Winning Player in Coin Game
3223. Minimum Length of String After Operations
3226. Number of Bit Changes to Make Two Integers Equal
3227. Vowels Game in a String
3228. Maximum Number of Operations to Move Ones to the End
3232. Find if Digit Game Can Be Won
3238. Find the Number of Winning Players
3239. Minimum Number of Flips to Make Binary Grid Palindromic I
3242. Design Neighbor Sum Service
3243. Shortest Distance After Road Addition Queries I
3248. Snake in Matrix
3249. Count the Number of Good Nodes
3254. Find the Power of K-Size Subarrays I
3255. Find the Power of K-Size Subarrays II
3258. Count Substrings That Satisfy K-Constraint I
3259. Maximum Energy Boost From Two Drinks
326. Power of Three
3264. Final Array State After K Multiplication Operations I
3265. Count Almost Equal Pairs I
3270. Find the Key of the Numbers
3271. Hash Divided String
3274. Check if Two Chessboard Squares Have the Same Color
3275. K-th Nearest Obstacle Queries
328. Odd Even Linked List
3280. Convert Date to Binary
3285. Find Indices of Stable Mountains
3289. The Two Sneaky Numbers of Digitville
3295. Report Spam Message
3300. Minimum Element After Replacement With Digit Sum
3301. Maximize the Total Height of Unique Towers
3330. Find the Original Typed String I
3340. Check Balanced String
3360. Stone Removal Game
3364. Minimum Positive Sum Subarray
3365. Rearrange K Substrings to Form Target String
3370. Smallest Number With All Set Bits
3371. Identify the Largest Outlier in an Array
3375. Minimum Operations to Make Array Values Equal to K
3379. Transformed Array
338. Counting Bits
34. Find First and Last Position of Element in Sorted Array
3402. Minimum Operations to Make Columns Strictly Increasing
342. Power of Four
343. Integer Break
3432. Count Partitions with Even Sum Difference
3438. Find Valid Pair of Adjacent Digits in String
344. Reverse String
3442. Maximum Difference Between Even and Odd Frequency I
345. Reverse Vowels of a String
3461. Check If Digits Are Equal in String After Operations I
347. Top K Frequent Elements
349. Intersection of Two Arrays
35. Search Insert Position
350. Intersection of Two Arrays II
374. Guess Number Higher or Lower
38. Count and Say
380. Insert Delete GetRandom O(1)
383. Ransom Note
386. Lexicographical Numbers
387. First Unique Character in a String
389. Find the Difference
39. Combination Sum
392. Is Subsequence
396. Rotate Function
397. Integer Replacement
398. Random Pick Index
402. Remove K Digits
404. Sum of Left Leaves
409. Longest Palindrome
41. First Missing Positive
412. Fizz Buzz
414. Third Maximum Number
415. Add Strings
429. N-ary Tree Level Order Traversal
430. Flatten a Multilevel Doubly Linked List
434. Number of Segments in a String
435. Non-overlapping Intervals
437. Path Sum III
438. Find All Anagrams in a String
441. Arranging Coins
442. Find All Duplicates in an Array
443. String Compression
445. Add Two Numbers II
448. Find All Numbers Disappeared in an Array
450. Delete Node in a BST
451. Sort Characters By Frequency
455. Assign Cookies
459. Repeated Substring Pattern
46. Permutations
463. Island Perimeter
47. Permutations II
476. Number Complement
48. Rotate Image
482. License Key Formatting
485. Max Consecutive Ones
49. Group Anagrams
498. Diagonal Traverse
5. Longest Palindromic Substring
50. Pow(x, n)
500. Keyboard Row
501. Find Mode in Binary Search Tree
504. Base 7
506. Relative Ranks
507. Perfect Number
508. Most Frequent Subtree Sum
509. Fibonacci Number
511. Game Play Analysis I
513. Find Bottom Left Tree Value
515. Find Largest Value in Each Tree Row
520. Detect Capital
53. Maximum Subarray
530. Minimum Absolute Difference in BST
535. Encode and Decode TinyURL
537. Complex Number Multiplication
538. Convert BST to Greater Tree
54. Spiral Matrix
541. Reverse String II
542. 01 Matrix
543. Diameter of Binary Tree
547. Number of Provinces
551. Student Attendance Record I
557. Reverse Words in a String III
559. Maximum Depth of N-ary Tree
56. Merge Intervals
560. Subarray Sum Equals K
561. Array Partition
563. Binary Tree Tilt
566. Reshape the Matrix
567. Permutation in String
572. Subtree of Another Tree
575. Distribute Candies
577. Employee Bonus
58. Length of Last Word
584. Find Customer Referee
586. Customer Placing the Largest Number of Orders
589. N-ary Tree Preorder Traversal
59. Spiral Matrix II
590. N-ary Tree Postorder Traversal
594. Longest Harmonious Subsequence
595. Big Countries
596. Classes More Than 5 Students
599. Minimum Index Sum of Two Lists
6. Zigzag Conversion
605. Can Place Flowers
606. Construct String from Binary Tree
609. Find Duplicate File in System
61. Rotate List
617. Merge Two Binary Trees
619. Biggest Single Number
620. Not Boring Movies
622. Design Circular Queue
623. Add One Row to Tree
624. Maximum Distance in Arrays
627. Swap Salary
628. Maximum Product of Three Numbers
637. Average of Levels in Binary Tree
64. Minimum Path Sum
643. Maximum Average Subarray I
645. Set Mismatch
647. Palindromic Substrings
648. Replace Words
649. Dota2 Senate
653. Two Sum IV - Input is a BST
654. Maximum Binary Tree
655. Print Binary Tree
657. Robot Return to Origin
66. Plus One
669. Trim a Binary Search Tree
67. Add Binary
671. Second Minimum Node In a Binary Tree
677. Map Sum Pairs
68. Text Justification
680. Valid Palindrome II
682. Baseball Game
684. Redundant Connection
692. Top K Frequent Words
7. Reverse Integer
70. Climbing Stairs
700. Search in a Binary Search Tree
701. Insert into a Binary Search Tree
703. Kth Largest Element in a Stream
704. Binary Search
705. Design HashSet
706. Design HashMap
709. To Lower Case
720. Longest Word in Dictionary
724. Find Pivot Index
725. Split Linked List in Parts
728. Self Dividing Numbers
73. Set Matrix Zeroes
735. Asteroid Collision
739. Daily Temperatures
74. Search a 2D Matrix
744. Find Smallest Letter Greater Than Target
746. Min Cost Climbing Stairs
748. Shortest Completing Word
75. Sort Colors
763. Partition Labels
766. Toeplitz Matrix
77. Combinations
771. Jewels and Stones
78. Subsets
783. Minimum Distance Between BST Nodes
784. Letter Case Permutation
785. Is Graph Bipartite?
786. K-th Smallest Prime Fraction
79. Word Search
791. Custom Sort String
796. Rotate String
797. All Paths From Source to Target
8. String to Integer (atoi)
80. Remove Duplicates from Sorted Array II
802. Find Eventual Safe States
804. Unique Morse Code Words
806. Number of Lines To Write String
811. Subdomain Visit Count
814. Binary Tree Pruning
817. Linked List Components
819. Most Common Word
82. Remove Duplicates from Sorted List II
821. Shortest Distance to a Character
824. Goat Latin
826. Most Profit Assigning Work
83. Remove Duplicates from Sorted List
830. Positions of Large Groups
832. Flipping an Image
841. Keys and Rooms
844. Backspace String Compare
846. Hand of Straights
848. Shifting Letters
852. Peak Index in a Mountain Array
859. Buddy Strings
86. Partition List
860. Lemonade Change
861. Score After Flipping Matrix
865. Smallest Subtree with all the Deepest Nodes
867. Transpose Matrix
869. Reordered Power of 2
872. Leaf-Similar Trees
874. Walking Robot Simulation
876. Middle of the Linked List
88. Merge Sorted Array
881. Boats to Save People
884. Uncommon Words from Two Sentences
89. Gray Code
890. Find and Replace Pattern
896. Monotonic Array
897. Increasing Order Search Tree
9. Palindrome Number
900. RLE Iterator
905. Sort Array By Parity
91. Decode Ways
912. Sort an Array
914. X of a Kind in a Deck of Cards
917. Reverse Only Letters
919. Complete Binary Tree Inserter
92. Reverse Linked List II
921. Minimum Add to Make Parentheses Valid
922. Sort Array By Parity II
925. Long Pressed Name
929. Unique Email Addresses
93. Restore IP Addresses
931. Minimum Falling Path Sum
938. Range Sum of BST
94. Binary Tree Inorder Traversal
942. DI String Match
944. Delete Columns to Make Sorted
945. Minimum Increment to Make Array Unique
946. Validate Stack Sequences
948. Bag of Tokens
950. Reveal Cards In Increasing Order
951. Flip Equivalent Binary Trees
958. Check Completeness of a Binary Tree
961. N-Repeated Element in Size 2N Array
965. Univalued Binary Tree
973. K Closest Points to Origin
977. Squares of a Sorted Array
98. Validate Binary Search Tree
985. Sum of Even Numbers After Queries
987. Vertical Order Traversal of a Binary Tree
988. Smallest String Starting From Leaf
989. Add to Array-Form of Integer
993. Cousins in Binary Tree
994. Rotting Oranges
997. Find the Town Judge
999. Available Captures for Rook
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README.md

1026. Maximum Difference Between Node and Ancestor

Oct 26, 2023

b409e78 · Oct 26, 2023

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Solution.py	Solution.py	Updated	Oct 26, 2023

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