list-21

Question	Free?	Status	Difficulty	Topics	Similar Questions
2001. Number of Pairs of Interchangeable Rectangles  🔗  📝	🆓	✅	⭐️⭐️	Array  🔗 Hash Table  🔗 Math  🔗 Counting  🔗 Number Theory  🔗	1512. Number of Good Pairs  🔗  📝 1814. Count Nice Pairs in an Array  🔗  📝 2197. Replace Non-Coprime Numbers in Array  🔗  📝
2002. Maximum Product of the Length of Two Palindromic Subsequences  🔗  📝	🆓		⭐️⭐️	String  🔗 Dynamic Programming  🔗 Backtracking  🔗 Bit Manipulation  🔗 Bitmask  🔗	125. Valid Palindrome  🔗  📝 516. Longest Palindromic Subsequence  🔗  📝 1960. Maximum Product of the Length of Two Palindromic Substrings  🔗  📝 2212. Maximum Points in an Archery Competition  🔗  📝
2003. Smallest Missing Genetic Value in Each Subtree  🔗  📝	🆓		⭐️⭐️⭐️	Dynamic Programming  🔗 Tree  🔗 Depth-First Search  🔗 Union Find  🔗
2004. The Number of Seniors and Juniors to Join the Company  🔗  📝	💰		⭐️⭐️⭐️	Database  🔗	1204. Last Person to Fit in the Bus  🔗  📝 2010. The Number of Seniors and Juniors to Join the Company II  🔗  📝
2005. Subtree Removal Game with Fibonacci Tree  🔗  📝	💰		⭐️⭐️⭐️	Math  🔗 Dynamic Programming  🔗 Tree  🔗 Binary Tree  🔗 Game Theory  🔗	1908. Game of Nim  🔗  📝
2006. Count Number of Pairs With Absolute Difference K  🔗  📝	🆓	✅	⭐️	Array  🔗 Hash Table  🔗 Counting  🔗	1. Two Sum  🔗  📝 532. K-diff Pairs in an Array  🔗  📝 1865. Finding Pairs With a Certain Sum  🔗  📝 2176. Count Equal and Divisible Pairs in an Array  🔗  📝 2364. Count Number of Bad Pairs  🔗  📝
2007. Find Original Array From Doubled Array  🔗  📝	🆓	✅	⭐️⭐️	Array  🔗 Hash Table  🔗 Greedy  🔗 Sorting  🔗	954. Array of Doubled Pairs  🔗  📝 2122. Recover the Original Array  🔗  📝
2008. Maximum Earnings From Taxi  🔗  📝	🆓		⭐️⭐️	Array  🔗 Binary Search  🔗 Dynamic Programming  🔗 Sorting  🔗	1235. Maximum Profit in Job Scheduling  🔗  📝 1353. Maximum Number of Events That Can Be Attended  🔗  📝 1751. Maximum Number of Events That Can Be Attended II  🔗  📝
2009. Minimum Number of Operations to Make Array Continuous  🔗  📝	🆓		⭐️⭐️⭐️	Array  🔗 Binary Search  🔗	424. Longest Repeating Character Replacement  🔗  📝 523. Continuous Subarray Sum  🔗  📝 1040. Moving Stones Until Consecutive II  🔗  📝 1611. Minimum One Bit Operations to Make Integers Zero  🔗  📝 1703. Minimum Adjacent Swaps for K Consecutive Ones  🔗  📝
2010. The Number of Seniors and Juniors to Join the Company II  🔗  📝	💰		⭐️⭐️⭐️	Database  🔗	1204. Last Person to Fit in the Bus  🔗  📝 2004. The Number of Seniors and Juniors to Join the Company  🔗  📝
2011. Final Value of Variable After Performing Operations  🔗  📝	🆓	✅	⭐️	Array  🔗 String  🔗 Simulation  🔗
2012. Sum of Beauty in the Array  🔗  📝	🆓		⭐️⭐️	Array  🔗	121. Best Time to Buy and Sell Stock  🔗  📝 915. Partition Array into Disjoint Intervals  🔗  📝
2013. Detect Squares  🔗  📝	🆓		⭐️⭐️	Array  🔗 Hash Table  🔗 Design  🔗 Counting  🔗
2014. Longest Subsequence Repeated k Times  🔗  📝	🆓		⭐️⭐️⭐️	String  🔗 Backtracking  🔗 Greedy  🔗 Counting  🔗 Enumeration  🔗	395. Longest Substring with At Least K Repeating Characters  🔗  📝
2015. Average Height of Buildings in Each Segment  🔗  📝	💰		⭐️⭐️	Array  🔗 Greedy  🔗 Sorting  🔗 Heap (Priority Queue)  🔗	1701. Average Waiting Time  🔗  📝 1943. Describe the Painting  🔗  📝 2158. Amount of New Area Painted Each Day  🔗  📝
2016. Maximum Difference Between Increasing Elements  🔗  📝	🆓	✅	⭐️	Array  🔗	121. Best Time to Buy and Sell Stock  🔗  📝 2078. Two Furthest Houses With Different Colors  🔗  📝
2017. Grid Game  🔗  📝	🆓		⭐️⭐️	Array  🔗 Matrix  🔗 Prefix Sum  🔗
2018. Check if Word Can Be Placed In Crossword  🔗  📝	🆓		⭐️⭐️	Array  🔗 Matrix  🔗 Enumeration  🔗
2019. The Score of Students Solving Math Expression  🔗  📝	🆓		⭐️⭐️⭐️	Array  🔗 Math  🔗 String  🔗 Dynamic Programming  🔗 Stack  🔗 Memoization  🔗	224. Basic Calculator  🔗  📝 241. Different Ways to Add Parentheses  🔗  📝
2020. Number of Accounts That Did Not Stream  🔗  📝	💰		⭐️⭐️	Database  🔗
2021. Brightest Position on Street  🔗  📝	💰		⭐️⭐️	Array  🔗 Prefix Sum  🔗 Ordered Set  🔗	2086. Minimum Number of Buckets Required to Collect Rainwater from Houses  🔗  📝 2237. Count Positions on Street With Required Brightness  🔗  📝
2022. Convert 1D Array Into 2D Array  🔗  📝	🆓	✅	⭐️	Array  🔗 Matrix  🔗 Simulation  🔗	566. Reshape the Matrix  🔗  📝
2023. Number of Pairs of Strings With Concatenation Equal to Target  🔗  📝	🆓	✅	⭐️⭐️	Array  🔗 String  🔗	1. Two Sum  🔗  📝
2024. Maximize the Confusion of an Exam  🔗  📝	🆓		⭐️⭐️	String  🔗 Binary Search  🔗 Sliding Window  🔗 Prefix Sum  🔗	340. Longest Substring with At Most K Distinct Characters  🔗  📝 424. Longest Repeating Character Replacement  🔗  📝 1004. Max Consecutive Ones III  🔗  📝 1482. Minimum Number of Days to Make m Bouquets  🔗  📝
2025. Maximum Number of Ways to Partition an Array  🔗  📝	🆓		⭐️⭐️⭐️	Array  🔗 Hash Table  🔗 Counting  🔗 Enumeration  🔗 Prefix Sum  🔗	416. Partition Equal Subset Sum  🔗  📝 698. Partition to K Equal Sum Subsets  🔗  📝
2026. Low-Quality Problems  🔗  📝	💰		⭐️	Database  🔗
2027. Minimum Moves to Convert String  🔗  📝	🆓	✅	⭐️	String  🔗 Greedy  🔗
2028. Find Missing Observations  🔗  📝	🆓		⭐️⭐️	Array  🔗 Math  🔗 Simulation  🔗	1155. Number of Dice Rolls With Target Sum  🔗  📝 1223. Dice Roll Simulation  🔗  📝
2029. Stone Game IX  🔗  📝	🆓		⭐️⭐️	Array  🔗 Math  🔗 Greedy  🔗 Counting  🔗 Game Theory  🔗	877. Stone Game  🔗  📝 1140. Stone Game II  🔗  📝 1406. Stone Game III  🔗  📝 1510. Stone Game IV  🔗  📝 1563. Stone Game V  🔗  📝 1686. Stone Game VI  🔗  📝 1690. Stone Game VII  🔗  📝 1872. Stone Game VIII  🔗  📝 2029. Stone Game IX  🔗  📝
2030. Smallest K-Length Subsequence With Occurrences of a Letter  🔗  📝	🆓		⭐️⭐️⭐️	String  🔗 Stack  🔗 Greedy  🔗 Monotonic Stack  🔗	316. Remove Duplicate Letters  🔗  📝 2334. Subarray With Elements Greater Than Varying Threshold  🔗  📝
2031. Count Subarrays With More Ones Than Zeros  🔗  📝	💰		⭐️⭐️	Array  🔗 Binary Search  🔗 Divide and Conquer  🔗 Binary Indexed Tree  🔗 Segment Tree  🔗 Merge Sort  🔗 Ordered Set  🔗	474. Ones and Zeroes  🔗  📝 1869. Longer Contiguous Segments of Ones than Zeros  🔗  📝 2155. All Divisions With the Highest Score of a Binary Array  🔗  📝
2032. Two Out of Three  🔗  📝	🆓	✅	⭐️	Array  🔗 Hash Table  🔗
2033. Minimum Operations to Make a Uni-Value Grid  🔗  📝	🆓		⭐️⭐️	Array  🔗 Math  🔗 Sorting  🔗 Matrix  🔗	462. Minimum Moves to Equal Array Elements II  🔗  📝
2034. Stock Price Fluctuation   🔗  📝	🆓		⭐️⭐️	Hash Table  🔗 Design  🔗 Heap (Priority Queue)  🔗 Data Stream  🔗 Ordered Set  🔗	981. Time Based Key-Value Store  🔗  📝
2035. Partition Array Into Two Arrays to Minimize Sum Difference  🔗  📝	🆓		⭐️⭐️⭐️	Array  🔗 Two Pointers  🔗 Binary Search  🔗 Dynamic Programming  🔗 Bit Manipulation  🔗 Ordered Set  🔗 Bitmask  🔗	416. Partition Equal Subset Sum  🔗  📝 805. Split Array With Same Average  🔗  📝 956. Tallest Billboard  🔗  📝 1049. Last Stone Weight II  🔗  📝 1755. Closest Subsequence Sum  🔗  📝 2270. Number of Ways to Split Array  🔗  📝 2305. Fair Distribution of Cookies  🔗  📝 2333. Minimum Sum of Squared Difference  🔗  📝
2036. Maximum Alternating Subarray Sum  🔗  📝	💰		⭐️⭐️	Array  🔗 Dynamic Programming  🔗	1911. Maximum Alternating Subsequence Sum  🔗  📝
2037. Minimum Number of Moves to Seat Everyone  🔗  📝	🆓	✅	⭐️	Array  🔗 Sorting  🔗
2038. Remove Colored Pieces if Both Neighbors are the Same Color  🔗  📝	🆓		⭐️⭐️	Math  🔗 String  🔗 Greedy  🔗 Game Theory  🔗
2039. The Time When the Network Becomes Idle  🔗  📝	🆓		⭐️⭐️	Array  🔗 Breadth-First Search  🔗 Graph  🔗	429. N-ary Tree Level Order Traversal  🔗  📝 559. Maximum Depth of N-ary Tree  🔗  📝 743. Network Delay Time  🔗  📝
2040. Kth Smallest Product of Two Sorted Arrays  🔗  📝	🆓		⭐️⭐️⭐️	Array  🔗 Binary Search  🔗	373. Find K Pairs with Smallest Sums  🔗  📝 532. K-diff Pairs in an Array  🔗  📝
2041. Accepted Candidates From the Interviews  🔗  📝	💰		⭐️⭐️	Database  🔗
2042. Check if Numbers Are Ascending in a Sentence  🔗  📝	🆓	✅	⭐️	String  🔗	8. String to Integer (atoi)  🔗  📝 1859. Sorting the Sentence  🔗  📝 2124. Check if All A's Appears Before All B's  🔗  📝
2043. Simple Bank System  🔗  📝	🆓		⭐️⭐️	Array  🔗 Hash Table  🔗 Design  🔗 Simulation  🔗	2241. Design an ATM Machine  🔗  📝
2044. Count Number of Maximum Bitwise-OR Subsets  🔗  📝	🆓	✅	⭐️⭐️	Array  🔗 Backtracking  🔗 Bit Manipulation  🔗	78. Subsets  🔗  📝 2275. Largest Combination With Bitwise AND Greater Than Zero  🔗  📝
2045. Second Minimum Time to Reach Destination  🔗  📝	🆓		⭐️⭐️⭐️	Breadth-First Search  🔗 Graph  🔗 Shortest Path  🔗	743. Network Delay Time  🔗  📝 1334. Find the City With the Smallest Number of Neighbors at a Threshold Distance  🔗  📝 1976. Number of Ways to Arrive at Destination  🔗  📝
2046. Sort Linked List Already Sorted Using Absolute Values  🔗  📝	💰		⭐️⭐️	Linked List  🔗 Two Pointers  🔗 Sorting  🔗	148. Sort List  🔗  📝
2047. Number of Valid Words in a Sentence  🔗  📝	🆓		⭐️	String  🔗	2114. Maximum Number of Words Found in Sentences  🔗  📝
2048. Next Greater Numerically Balanced Number  🔗  📝	🆓		⭐️⭐️	Math  🔗 Backtracking  🔗 Enumeration  🔗
2049. Count Nodes With the Highest Score  🔗  📝	🆓		⭐️⭐️	Array  🔗 Tree  🔗 Depth-First Search  🔗 Binary Tree  🔗	834. Sum of Distances in Tree  🔗  📝 1110. Delete Nodes And Return Forest  🔗  📝 1339. Maximum Product of Splitted Binary Tree  🔗  📝
2050. Parallel Courses III  🔗  📝	🆓		⭐️⭐️⭐️	Dynamic Programming  🔗 Graph  🔗 Topological Sort  🔗	630. Course Schedule III  🔗  📝 1136. Parallel Courses  🔗  📝 1834. Single-Threaded CPU  🔗  📝 1882. Process Tasks Using Servers  🔗  📝 2127. Maximum Employees to Be Invited to a Meeting  🔗  📝
2051. The Category of Each Member in the Store  🔗  📝	💰		⭐️⭐️	Database  🔗
2052. Minimum Cost to Separate Sentence Into Rows  🔗  📝	💰		⭐️⭐️	Array  🔗 Dynamic Programming  🔗	418. Sentence Screen Fitting  🔗  📝
2053. Kth Distinct String in an Array  🔗  📝	🆓	✅	⭐️	Array  🔗 Hash Table  🔗 String  🔗 Counting  🔗	2085. Count Common Words With One Occurrence  🔗  📝
2054. Two Best Non-Overlapping Events  🔗  📝	🆓		⭐️⭐️	Array  🔗 Binary Search  🔗 Dynamic Programming  🔗 Sorting  🔗 Heap (Priority Queue)  🔗	1235. Maximum Profit in Job Scheduling  🔗  📝 1751. Maximum Number of Events That Can Be Attended II  🔗  📝
2055. Plates Between Candles  🔗  📝	🆓		⭐️⭐️	Array  🔗 String  🔗 Binary Search  🔗 Prefix Sum  🔗	34. Find First and Last Position of Element in Sorted Array  🔗  📝 1177. Can Make Palindrome from Substring  🔗  📝
2056. Number of Valid Move Combinations On Chessboard  🔗  📝	🆓		⭐️⭐️⭐️	Array  🔗 String  🔗 Backtracking  🔗 Simulation  🔗
2057. Smallest Index With Equal Value  🔗  📝	🆓	✅	⭐️	Array  🔗
2058. Find the Minimum and Maximum Number of Nodes Between Critical Points  🔗  📝	🆓	✅	⭐️⭐️	Linked List  🔗
2059. Minimum Operations to Convert Number  🔗  📝	🆓		⭐️⭐️	Array  🔗 Breadth-First Search  🔗	1658. Minimum Operations to Reduce X to Zero  🔗  📝
2060. Check if an Original String Exists Given Two Encoded Strings  🔗  📝	🆓		⭐️⭐️⭐️	String  🔗 Dynamic Programming  🔗	408. Valid Word Abbreviation  🔗  📝 1662. Check If Two String Arrays are Equivalent  🔗  📝
2061. Number of Spaces Cleaning Robot Cleaned  🔗  📝	💰		⭐️⭐️	Array  🔗 Matrix  🔗 Simulation  🔗	489. Robot Room Cleaner  🔗  📝
2062. Count Vowel Substrings of a String  🔗  📝	🆓		⭐️	Hash Table  🔗 String  🔗	792. Number of Matching Subsequences  🔗  📝 992. Subarrays with K Different Integers  🔗  📝 1513. Number of Substrings With Only 1s  🔗  📝 1839. Longest Substring Of All Vowels in Order  🔗  📝 2262. Total Appeal of A String  🔗  📝
2063. Vowels of All Substrings  🔗  📝	🆓		⭐️⭐️	Math  🔗 String  🔗 Dynamic Programming  🔗 Combinatorics  🔗	1358. Number of Substrings Containing All Three Characters  🔗  📝 2262. Total Appeal of A String  🔗  📝
2064. Minimized Maximum of Products Distributed to Any Store  🔗  📝	🆓		⭐️⭐️	Array  🔗 Binary Search  🔗	875. Koko Eating Bananas  🔗  📝 1011. Capacity To Ship Packages Within D Days  🔗  📝 1283. Find the Smallest Divisor Given a Threshold  🔗  📝 1552. Magnetic Force Between Two Balls  🔗  📝 1760. Minimum Limit of Balls in a Bag  🔗  📝 2187. Minimum Time to Complete Trips  🔗  📝 2226. Maximum Candies Allocated to K Children  🔗  📝
2065. Maximum Path Quality of a Graph  🔗  📝	🆓		⭐️⭐️⭐️	Array  🔗 Backtracking  🔗 Graph  🔗	741. Cherry Pickup  🔗  📝 1928. Minimum Cost to Reach Destination in Time  🔗  📝
2066. Account Balance  🔗  📝	💰		⭐️⭐️	Database  🔗
2067. Number of Equal Count Substrings  🔗  📝	💰		⭐️⭐️	String  🔗 Counting  🔗 Prefix Sum  🔗	3. Longest Substring Without Repeating Characters  🔗  📝 395. Longest Substring with At Least K Repeating Characters  🔗  📝 2168. Unique Substrings With Equal Digit Frequency  🔗  📝
2068. Check Whether Two Strings are Almost Equivalent  🔗  📝	🆓	✅	⭐️	Hash Table  🔗 String  🔗 Counting  🔗
2069. Walking Robot Simulation II  🔗  📝	🆓		⭐️⭐️	Design  🔗 Simulation  🔗	874. Walking Robot Simulation  🔗  📝
2070. Most Beautiful Item for Each Query  🔗  📝	🆓		⭐️⭐️	Array  🔗 Binary Search  🔗 Sorting  🔗	1847. Closest Room  🔗  📝
2071. Maximum Number of Tasks You Can Assign  🔗  📝	🆓		⭐️⭐️⭐️	Array  🔗 Binary Search  🔗 Greedy  🔗 Queue  🔗 Sorting  🔗 Monotonic Queue  🔗	826. Most Profit Assigning Work  🔗  📝 2141. Maximum Running Time of N Computers  🔗  📝
2072. The Winner University  🔗  📝	💰		⭐️	Database  🔗	2082. The Number of Rich Customers  🔗  📝
2073. Time Needed to Buy Tickets  🔗  📝	🆓	✅	⭐️	Array  🔗 Queue  🔗 Simulation  🔗	1700. Number of Students Unable to Eat Lunch  🔗  📝
2074. Reverse Nodes in Even Length Groups  🔗  📝	🆓	✅	⭐️⭐️	Linked List  🔗	25. Reverse Nodes in k-Group  🔗  📝 206. Reverse Linked List  🔗  📝
2075. Decode the Slanted Ciphertext  🔗  📝	🆓		⭐️⭐️	String  🔗 Simulation  🔗	498. Diagonal Traverse  🔗  📝
2076. Process Restricted Friend Requests  🔗  📝	🆓		⭐️⭐️⭐️	Union Find  🔗 Graph  🔗	305. Number of Islands II  🔗  📝 1202. Smallest String With Swaps  🔗  📝 2127. Maximum Employees to Be Invited to a Meeting  🔗  📝
2077. Paths in Maze That Lead to Same Room  🔗  📝	💰		⭐️⭐️	Graph  🔗	323. Number of Connected Components in an Undirected Graph  🔗  📝 882. Reachable Nodes In Subdivided Graph  🔗  📝 1971. Find if Path Exists in Graph  🔗  📝 2204. Distance to a Cycle in Undirected Graph  🔗  📝
2078. Two Furthest Houses With Different Colors  🔗  📝	🆓	✅	⭐️	Array  🔗 Greedy  🔗	1299. Replace Elements with Greatest Element on Right Side  🔗  📝 1855. Maximum Distance Between a Pair of Values  🔗  📝 2016. Maximum Difference Between Increasing Elements  🔗  📝
2079. Watering Plants  🔗  📝	🆓		⭐️⭐️	Array  🔗	2105. Watering Plants II  🔗  📝
2080. Range Frequency Queries  🔗  📝	🆓		⭐️⭐️	Array  🔗 Hash Table  🔗 Binary Search  🔗 Design  🔗 Segment Tree  🔗
2081. Sum of k-Mirror Numbers  🔗  📝	🆓		⭐️⭐️⭐️	Math  🔗 Enumeration  🔗	247. Strobogrammatic Number II  🔗  📝 866. Prime Palindrome  🔗  📝
2082. The Number of Rich Customers  🔗  📝	💰		⭐️	Database  🔗	2072. The Winner University  🔗  📝
2083. Substrings That Begin and End With the Same Letter  🔗  📝	💰		⭐️⭐️	Hash Table  🔗 Math  🔗 String  🔗 Counting  🔗 Prefix Sum  🔗	1512. Number of Good Pairs  🔗  📝 1781. Sum of Beauty of All Substrings  🔗  📝 1885. Count Pairs in Two Arrays  🔗  📝 2168. Unique Substrings With Equal Digit Frequency  🔗  📝
2084. Drop Type 1 Orders for Customers With Type 0 Orders  🔗  📝	💰		⭐️⭐️	Database  🔗
2085. Count Common Words With One Occurrence  🔗  📝	🆓	✅	⭐️	Array  🔗 Hash Table  🔗 String  🔗 Counting  🔗	349. Intersection of Two Arrays  🔗  📝 884. Uncommon Words from Two Sentences  🔗  📝 2053. Kth Distinct String in an Array  🔗  📝
2086. Minimum Number of Buckets Required to Collect Rainwater from Houses  🔗  📝	🆓		⭐️⭐️	String  🔗 Dynamic Programming  🔗 Greedy  🔗	1989. Maximum Number of People That Can Be Caught in Tag  🔗  📝 2021. Brightest Position on Street  🔗  📝
2087. Minimum Cost Homecoming of a Robot in a Grid  🔗  📝	🆓		⭐️⭐️	Array  🔗 Greedy  🔗 Matrix  🔗	62. Unique Paths  🔗  📝 64. Minimum Path Sum  🔗  📝 361. Bomb Enemy  🔗  📝 1277. Count Square Submatrices with All Ones  🔗  📝
2088. Count Fertile Pyramids in a Land  🔗  📝	🆓		⭐️⭐️⭐️	Array  🔗 Dynamic Programming  🔗 Matrix  🔗	1277. Count Square Submatrices with All Ones  🔗  📝 1878. Get Biggest Three Rhombus Sums in a Grid  🔗  📝
2089. Find Target Indices After Sorting Array  🔗  📝	🆓	✅	⭐️	Array  🔗 Binary Search  🔗 Sorting  🔗	34. Find First and Last Position of Element in Sorted Array  🔗  📝 1331. Rank Transform of an Array  🔗  📝
2090. K Radius Subarray Averages  🔗  📝	🆓	✅	⭐️⭐️	Array  🔗 Sliding Window  🔗	209. Minimum Size Subarray Sum  🔗  📝 346. Moving Average from Data Stream  🔗  📝 560. Subarray Sum Equals K  🔗  📝 643. Maximum Average Subarray I  🔗  📝 1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold  🔗  📝
2091. Removing Minimum and Maximum From Array  🔗  📝	🆓		⭐️⭐️	Array  🔗 Greedy  🔗	1423. Maximum Points You Can Obtain from Cards  🔗  📝 1647. Minimum Deletions to Make Character Frequencies Unique  🔗  📝
2092. Find All People With Secret  🔗  📝	🆓		⭐️⭐️⭐️	Depth-First Search  🔗 Breadth-First Search  🔗 Union Find  🔗 Graph  🔗 Sorting  🔗	882. Reachable Nodes In Subdivided Graph  🔗  📝
2093. Minimum Cost to Reach City With Discounts  🔗  📝	💰		⭐️⭐️	Graph  🔗 Shortest Path  🔗	787. Cheapest Flights Within K Stops  🔗  📝 1135. Connecting Cities With Minimum Cost  🔗  📝 1928. Minimum Cost to Reach Destination in Time  🔗  📝 2247. Maximum Cost of Trip With K Highways  🔗  📝
2094. Finding 3-Digit Even Numbers  🔗  📝	🆓		⭐️	Array  🔗 Hash Table  🔗 Sorting  🔗 Enumeration  🔗	1295. Find Numbers with Even Number of Digits  🔗  📝
2095. Delete the Middle Node of a Linked List  🔗  📝	🆓	✅	⭐️⭐️	Linked List  🔗 Two Pointers  🔗	19. Remove Nth Node From End of List  🔗  📝 143. Reorder List  🔗  📝 203. Remove Linked List Elements  🔗  📝 876. Middle of the Linked List  🔗  📝
2096. Step-By-Step Directions From a Binary Tree Node to Another  🔗  📝	🆓	✅	⭐️⭐️	String  🔗 Tree  🔗 Depth-First Search  🔗 Binary Tree  🔗	113. Path Sum II  🔗  📝 236. Lowest Common Ancestor of a Binary Tree  🔗  📝 257. Binary Tree Paths  🔗  📝 1740. Find Distance in a Binary Tree  🔗  📝
2097. Valid Arrangement of Pairs  🔗  📝	🆓		⭐️⭐️⭐️	Depth-First Search  🔗 Graph  🔗 Eulerian Circuit  🔗	332. Reconstruct Itinerary  🔗  📝 1971. Find if Path Exists in Graph  🔗  📝
2098. Subsequence of Size K With the Largest Even Sum  🔗  📝	💰		⭐️⭐️	Array  🔗 Greedy  🔗 Sorting  🔗	410. Split Array Largest Sum  🔗  📝 1043. Partition Array for Maximum Sum  🔗  📝 1524. Number of Sub-arrays With Odd Sum  🔗  📝
2099. Find Subsequence of Length K With the Largest Sum  🔗  📝	🆓	✅	⭐️	Array  🔗 Hash Table  🔗 Sorting  🔗 Heap (Priority Queue)  🔗	215. Kth Largest Element in an Array  🔗  📝 1005. Maximize Sum Of Array After K Negations  🔗  📝 1356. Sort Integers by The Number of 1 Bits  🔗  📝 2163. Minimum Difference in Sums After Removal of Elements  🔗  📝
2100. Find Good Days to Rob the Bank  🔗  📝	🆓		⭐️⭐️	Array  🔗 Dynamic Programming  🔗 Prefix Sum  🔗	665. Non-decreasing Array  🔗  📝 845. Longest Mountain in Array  🔗  📝 1095. Find in Mountain Array  🔗  📝 1800. Maximum Ascending Subarray Sum  🔗  📝