LeetCode => JAVA + DSA SOLUTION By [SANJANA SINGH]

Difficulty	Challenge	Solution
Easy	1. Two Sum	Solution
Easy	26. Remove Duplicates from Sorted Array	Solution
Easy	1854. Maximum Population Year[Important]	Solution
Easy	1886. Determine Whether Matrix Can Be Obtained By Rotation [Important]	Solution
Easy	1304. Find N Unique Integers Sum up to Zero	Solution
Easy	566. Reshape the Matrix	Solution
Easy	66. Plus One	Solution
Easy	414. Third Maximum Number	Solution
Easy	1122. Relative Sort Array	Solution
Easy	1464. Maximum Product of Two Elements in an Array	Solution
Easy	1991. Find the Middle Index in Array	Solution
Easy	268. Missing Number	Solution
Easy	283. Move Zeroes	Solution
Easy	744. Find Smallest Letter Greater Than Target	Solution
Easy	14. Longest Common Prefix	Solution
Easy	35. Search Insert Position	Solution
Easy	69. Sqrt(x)	Solution
Easy	231. Power of Two	Solution
Easy	1480. Running Sum of 1d Array	Solution
Easy	1832. Check if the Sentence Is Pangram	Solution
Easy	1732. Find the Highest Altitude	Solution
Easy	1572. Matrix Diagonal Sum	Solution
Easy	1295. Find Numbers with Even Number of Digits	Solution
Easy	1470. Shuffle the Array	Solution
Easy	1920. Build Array from Permutation	Solution
Easy	1929. Concatenation of Array	Solution
Easy	1920. Build Array from Permutation	Solution
Easy	1672. Richest Customer Wealth	Solution
Easy	832. Flipping an Image	Solution
Easy	1295. Find Numbers with Even Number of Digits	Solution
Easy	867. Transpose Matrix	Solution
Easy	1108. Defanging an IP Address	Solution
Easy	1528. Shuffle String	Solution
Easy	1773. Count Items Matching a Rule	Solution
Easy	1678. Goal Parser Interpretation	Solution
Easy	1859. Sorting the Sentence	Solution
Easy	1662. Check If Two String Arrays are Equivalent	Solution
Easy	709. To Lower Case	Solution
Easy	1704. Determine if String Halves Are Alike	Solution
Easy	557. Reverse Words in a String III	Solution
Easy	1967. Number of Strings That Appear as Substrings in Word	Solution
Easy	657. Robot Return to Origin	Solution
Easy	168. Excel Sheet Column Title	Solution
Easy	28. Implement strStr()	Solution
Easy	125. Valid Palindrome	Solution
Easy	680. Valid Palindrome II	Solution
Easy	14. Longest Common Prefix	Solution
Easy	1668. Maximum Repeating Substring	Solution
Easy	58. Length of Last Word	Solution
Easy	1768. Merge Strings Alternately	Solution
Easy	2000. Reverse Prefix of Word	Solution
Easy	13. Roman to Integer	Solution
Easy	20. Valid Parentheses	Solution
Easy	278. First Bad Version	Solution
Easy	367. Valid Perfect Square	Solution
Easy	374. Guess Number Higher or Lower	Solution
Easy	441. Arranging Coins	Solution
Easy	744. Find Smallest Letter Greater Than Target	Solution
Easy	1539. Kth Missing Positive Number	Solution
Easy	349. Intersection of Two Arrays	Solution
Easy	1351. Count Negative Numbers in a Sorted Matrix	Solution
Easy	704. Binary Search	Solution
Easy	1608. Special Array With X Elements Greater Than or Equal X	Solution
Easy	1346. Check If N and Its Double Exist	Solution
Easy	888. Fair Candy Swap	Solution
Easy	350. Intersection of Two Arrays II	Solution
Easy	88. Merge Sorted Array	Solution
Easy	169. Majority Element	Solution
Easy	217. Contains Duplicate	Solution
Easy	268. Missing Number	Solution
Easy	2114. Maximum Number of Words Found in Sentences	Solution
Easy	771. Jewels and Stones	Solution
Easy	2011. Final Value of Variable After Performing Operations	Solution
Easy	628. Maximum Product of Three Numbers	Solution
Easy	905. Sort Array By Parity	Solution
Easy	922. Sort Array By Parity II	Solution
Easy	561. Array Partition I	Solution
Easy	455. Assign Cookies	Solution
Easy	1051. Height Checker	Solution
Easy	976. Largest Perimeter Triangle	Solution
Easy	977. Squares of a Sorted Array	Solution
Easy	1342. Number of Steps to Reduce a Number to Zero (#Recursion)	Solution
Easy	344. Reverse String (#Recursion)	Solution
Easy	509. Fibonacci Number (#DP)	Solution
Easy	326. Power of Three (#Recursion)	Solution
Easy	342. Power of Four (#Recursion)	Solution
Easy	21. Merge Two Sorted Lists (#Recursion)	Solution
Easy	203. Remove Linked List Elements (#Recursion)	Solution
Easy	206. Reverse Linked List (#Recursion)	Solution
Easy	234. Palindrome Linked List (#Recursion)	Solution
Easy	1137. N-th Tribonacci Number (#DP)	Solution
Easy	70. Climbing Stairs (#DP)	Solution
Easy	746. Min Cost Climbing Stairs (#DP)	Solution
Easy	796. Rotate String	Solution
Easy	94. Binary Tree Inorder Traversal(#TREE)	Solution
Easy	783. Minimum Distance Between BST Nodes(#TREE)	Solution
Easy	671. Second Minimum Node In a Binary Tree(#TREE)	Solution
Easy	112. Path Sum(#TREE)	Solution
Easy	144. Binary Tree Preorder Traversal(#TREE)	Solution
Easy	226. Invert Binary Tree(#TREE)	Solution
Easy	572. Subtree of Another Tree(#TREE)	Solution
Easy	938. Range Sum of BST (#TREE)	Solution
Easy	101. Symmetric Tree(#TREE)	Solution
Easy	108. Convert Sorted Array to Binary Search Tree(#TREE)	Solution
Easy	617. Merge Two Binary Trees(#TREE)	Solution
Easy	104. Maximum Depth of Binary Tree(#TREE)	Solution
Easy	100. Same Tree(#TREE)	Solution
Easy	530. Minimum Absolute Difference in BST (#TREE)	Solution
Easy	404. Sum of Left Leaves (#TREE)	Solution
Easy	110. Balanced Binary Tree (#TREE)	Solution
Easy	257. Binary Tree Paths(#Tree)	Solution
Easy	1025. Divisor Game (#DP)	Solution
Easy	121. Best Time to Buy and Sell Stock	Solution
Easy	724. Find Pivot Index	Solution
Easy	118. Pascal's Triangle (#Important)	Solution
Easy	415. Add Strings	Solution
Easy	242. Valid Anagram	Solution
Easy	409. Longest Palindrome	Solution
Easy	67. Add Binary	Solution
Easy	202. Happy Number	Solution
Easy	844. Backspace String Compare (#Stack)	Solution
Easy	496. Next Greater Element I (#Stack)	Solution
Easy	387. First Unique Character in a String	Solution
Easy	485. Max Consecutive Ones	Solution
Easy	383. Ransom Note	Solution
Easy	941. Valid Mountain Array	Solution
Easy	27. Remove Element	Solution
Easy	136. Single Number	Solution
Easy	645. Set Mismatch	Solution
Easy	1252. Cells with Odd Values in a Matrix	Solution
Easy	1389. Create Target Array in the Given Order	Solution
Easy	1512. Number of Good Pairs	Solution
Easy	145. Binary Tree Postorder Traversal	Solution
Easy	448. Find All Numbers Disappeared in an Array	Solution
Easy	637. Average of Levels in Binary Tree(#Tree)	Solution
Easy	925. Long Pressed Name	Solution
Easy	1002. Find Common Characters	Solution
Easy	1200. Minimum Absolute Difference	Solution
Easy	653. Two Sum IV - Input is a BST	Solution
Easy	190. Reverse Bits	Solution
Easy	191. Number of 1 Bits	Solution
Easy	1523. Count Odd Numbers in an Interval Range	Solution
Easy	1491. Average Salary Excluding the Minimum and Maximum Salary	Solution
Easy	1281. Subtract the Product and Sum of Digits of an Integer	Solution
Easy	219. Contains Duplicate II	Solution
Easy	2068. Check Whether Two Strings are Almost Equivalent	Solution
Easy	766. Toeplitz Matrix	Solution
Easy	1380. Lucky Numbers in a Matrix	Solution
Easy	1323. Maximum 69 Number	Solution
Easy	1544. Make The String Great	Solution
Easy	1047. Remove All Adjacent Duplicates In String	Solution
Easy	2465. Number of Distinct Averages	Solution
Easy	263. Ugly Number	Solution
Easy	1207. Unique Number of Occurrences	Solution
Easy	872. Leaf-Similar Trees	Solution
Easy	1971. Find if Path Exists in Graph	Solution
Easy	2389. Longest Subsequence With Limited Sum	Solution
Easy	290. Word Pattern	Solution
Easy	520. Detect Capital	Solution
Easy	944. Delete Columns to Make Sorted	Solution
Easy	232. Implement Queue using Stacks	Solution
Easy	605. Can Place Flowers	Solution
Easy	189. Rotate Array	Solution
Easy	2605. Form Smallest Number From Two Digit Arrays	Solution
Easy	1046. Last Stone Weight	Solution
Easy	258. Add Digits	Solution
Easy	1822. Sign of the Product of an Array	Solution
Easy	2215. Find the Difference of Two Arrays	Solution
Easy	392. Is Subsequence	Solution
Easy	205. Isomorphic Strings(HashMap)	Solution
Easy	228. Summary Ranges	Solution
Easy	705. Design HashSet	Solution
Easy	1232. Check If It Is a Straight Line	Solution
Easy	1502. Can Make Arithmetic Progression From Sequence	Solution
Easy	1351. Count Negative Numbers in a Sorted Matrix	Solution
Easy	859. Buddy Strings	Solution
Easy	111. Minimum Depth of Binary Tree	Solution
Easy	459. Repeated Substring Pattern	Solution
Easy	225. Implement Stack using Queues	Solution
Easy	1337. The K Weakest Rows in a Matrix	Solution
Easy	389. Find the Difference	Solution
Easy	706. Design HashMap	Solution
Easy		Solution
Easy		Solution
Medium	80. Remove Duplicates from Sorted Array II	Solution
Medium	34. Find First and Last Position of Element in Sorted Array	Solution
Medium	162. Find Peak Element	Solution
Medium	167. Two Sum II - Input Array Is Sorted	Solution
Medium	78. Subsets (#Backtraking)	Solution
Medium	90. Subsets II (#Backtraking)	Solution
Medium	46. Permutations(#Backtraking)	Solution
Medium	47. Permutations II (#Backtraking)	Solution
Medium	131. Palindrome Partitioning (#Backtraking)	Solution
Medium	39. Combination Sum (#Backtraking)	Solution
Medium	40. Combination Sum II(#Backtraking)	Solution
Medium	494. Target Sum (#Recursion)	Solution
Medium	1922. Count Good Numbers (#Recursion)	Solution
Medium	62. Unique Paths (#DP)	Solution
Medium	63. Unique Paths II (#DP)	Solution
Medium	64. Minimum Path Sum (#DP)	Solution
Medium	139. Word Break (#DP)	Solution
Medium	151. Reverse Words in a String	Solution
Medium	543. Diameter of Binary Tree(#Tree)	Solution
Medium	98. Validate Binary Search Tree(#Tree)	Solution
Medium	113. Path Sum II(#Tree)	Solution
Medium	2. Add Two Numbers(#LL)	Solution
Medium	77. Combinations (#Backtraking)	Solution
Medium	526. Beautiful Arrangement (#DP)	Solution
Medium	338. Counting Bits (#DP)	Solution
Medium	53. Maximum Subarray	Solution
Medium	852. Peak Index in a Mountain Array	Solution
Medium	7. Reverse Integer	Solution
Medium	453. Minimum Moves to Equal Array Elements(#MATH)	Solution
Medium	89. Gray Code	Solution
Medium	3. Longest Substring Without Repeating Characters(#String)	Solution
Medium	122. Best Time to Buy and Sell Stock II	Solution
Medium	15. 3Sum	Solution
Medium	238. Product of Array Except Self	Solution
Medium	56. Merge Intervals(#Array)	Solution
Medium	54. Spiral Matrix(#Array)	Solution
Medium	560. Subarray Sum Equals K (#Array)	Solution
Medium	31. Next Permutation(#Array)	Solution
Medium	11. Container With Most Water(#Array)	Solution
Medium	48. Rotate Image(#Array)	Solution
Medium	79. Word Search (#Array)	Solution
Medium	16. 3Sum Closest (#Array)	Solution
Medium	287. Find the Duplicate Number (#Array)	Solution
Medium	289. Game of Life(#Array)	Solution
Medium	18. 4Sum (#Array)	Solution
Medium	1010. Pairs of Songs With Total Durations Divisible by 60 (#Array)	Solution
Medium	1423. Maximum Points You Can Obtain from Cards (#Array)	Solution
Medium	1465. Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts (#Array)	Solution
Medium	695. Max Area of Island (#Array)	Solution
Medium	532. K-diff Pairs in an Array (#Array)	Solution
Medium	1169. Invalid Transactions (#Array)	Solution
Medium	55. Jump Game (#Array)	Solution
Medium	200. Number of Islands	Solution
Medium	73. Set Matrix Zeroes	Solution
Medium	33. Search in Rotated Sorted Array	Solution
Medium	36. Valid Sudoku	Solution
Medium	417. Pacific Atlantic Water Flow	Solution
Medium	1249. Minimum Remove to Make Valid Parentheses (#String)	Solution
Medium	5. Longest Palindromic Substring (#String)	Solution
Medium	49. Group Anagrams (#String)	Solution
Medium	227. Basic Calculator II (#String)	Solution
Medium	12. Integer to Roman (#String)	Solution
Medium	71. Simplify Path (#String)	Solution
Medium	28. Find the Index of the First Occurrence in a String (#String)	Solution
Medium	429. N-ary Tree Level Order Traversal (#Tree)	Solution
Medium	814. Binary Tree Pruning (#Tree)	Solution
Medium	1996. The Number of Weak Characters in the Game	Solution
Medium	179. Largest Number	Solution
Medium	948. Bag of Tokens	Solution
Medium	1383. Maximum Performance of a Team	Solution
Medium	985. Sum of Even Numbers After Queries	Solution
Medium	718. Maximum Length of Repeated Subarray	Solution
Medium	1680. Concatenation of Consecutive Binary Numbers	Solution
Medium	763. Partition Labels	Solution
Medium	19. Remove Nth Node From End of List	Solution
Medium	838. Push Dominoes	Solution
Medium	1155. Number of Dice Rolls With Target Sum	Solution
Medium	623. Add One Row to Tree	Solution
Medium	981. Time Based Key-Value Store	Solution
Medium	729. My Calendar I	Solution
Medium	334. Increasing Triplet Subsequence	Solution
Medium	2095. Delete the Middle Node of a Linked List	Solution
Medium	1531. String Compression II	Solution
Medium	443. String Compression	Solution
Medium	692. Top K Frequent Words (#Comparator)	Solution
Medium	1239. Maximum Length of a Concatenated String with Unique Characters	Solution
Medium	523. Continuous Subarray Sum	Solution
Medium	2300. Successful Pairs of Spells and Potions	Solution
Medium	1706. Where Will the Ball Fall	Solution
Medium	433. Minimum Genetic Mutation	Solution
Medium	2131. Longest Palindrome by Concatenating Two Letter Words	Solution
Medium	2461. Maximum Sum of Distinct Subarrays With Length K	Solution
Medium	137. Single Number II	Solution
Medium	260. Single Number III	Solution
Medium	901. Online Stock Span	Solution
Medium	947. Most Stones Removed with Same Row or Column	Solution
Medium	222. Count Complete Tree Nodes	Solution
Medium	223. Rectangle Area	Solution
Medium	1926. Nearest Exit from Entrance in Maze	Solution
Medium	279. Perfect Squares	Solution
Medium	907. Sum of Subarray Minimums	Solution
Medium	2225. Find Players With Zero or One Losses	Solution
Medium	380. Insert Delete GetRandom O(1)	Solution
Medium	1657. Determine if Two Strings Are Close	Solution
Medium	451. Sort Characters By Frequency	Solution
Medium	2256. Minimum Average Difference	Solution
Medium	328. Odd Even Linked List	Solution
Medium	1026. Maximum Difference Between Node and Ancestor	Solution
Medium	1339. Maximum Product of Splitted Binary Tree	Solution
Medium	1143. Longest Common Subsequence	Solution
Medium	150. Evaluate Reverse Polish Notation	Solution
Medium	739. Daily Temperatures	Solution
Medium	841. Keys and Rooms	Solution
Medium	886. Possible Bipartition	Solution
Medium	2279. Maximum Bags With Full Capacity of Rocks	Solution
Medium	1962. Remove Stones to Minimize the Total	Solution
Medium	1877. Minimize Maximum Pair Sum in Array	Solution
Medium	2244. Minimum Rounds to Complete All Tasks	Solution
Medium	452. Minimum Number of Arrows to Burst Balloons	Solution
Medium	1833. Maximum Ice Cream Bars	Solution
Medium	134. Gas Station	Solution
Medium	1443. Minimum Time to Collect All Apples in a Tree	Solution
Medium	926. Flip String to Monotone Increasing	Solution
Medium	974. Subarray Sums Divisible by K	Solution
Medium	93. Restore IP Addresses	Solution
Medium	904. Fruit Into Baskets	Solution
Medium	442. Find All Duplicates in an Array	Solution
Medium	1162. As Far from Land as Possible	Solution
Medium	382. Linked List Random Node	Solution
Medium	109. Convert Sorted List to Binary Search Tree	Solution
Medium	129. Sum Root to Leaf Numbers	Solution
Medium	958. Check Completeness of a Binary Tree	Solution
Medium	106. Construct Binary Tree from Inorder and Postorder Traversal	Solution
Medium	208. Implement Trie (Prefix Tree)	Solution
Medium	1472. Design Browser History	Solution
Medium	216. Combination Sum III	Solution
Medium	2348. Number of Zero-Filled Subarrays	Solution
Medium	1466. Reorder Routes to Make All Paths Lead to the City Zero	Solution
Medium	2606. Find the Substring With Maximum Cost	Solution
Medium	2405. Optimal Partition of String	Solution
Medium	2439. Minimize Maximum of Array	Solution
Medium	1254. Number of Closed Islands	Solution
Medium	1020. Number of Enclaves	Solution
Medium	2390. Removing Stars From a String	Solution
Medium	516. Longest Palindromic Subsequence	Solution
Medium	662. Maximum Width of Binary Tree	Solution
Medium	2336. Smallest Number in Infinite Set	Solution
Medium	319. Bulb Switcher	Solution
Medium	649. Dota2 Senate	Solution
Medium	1456. Maximum Number of Vowels in a Substring of Given Length	Solution
Medium	1498. Number of Subsequences That Satisfy the Given Sum Condition	Solution
Medium	59. Spiral Matrix II	Solution
Medium	1035. Uncrossed Lines (DP)	Solution
Medium	128. Longest Consecutive Sequence	Solution
Medium	2140. Solving Questions With Brainpower	Solution
Medium	2466. Count Ways To Build Good Strings	Solution
Medium	155. Min Stack	Solution
Medium	24. Swap Nodes in Pairs(LL)	Solution
Medium	2130. Maximum Twin Sum of a Linked List	Solution
Medium	1557. Minimum Number of Vertices to Reach All Nodes	Solution
Medium	785. Is Graph Bipartite?	Solution
Medium	837. New 21 Game	Solution
Medium	1140. Stone Game II	Solution
Medium	1396. Design Underground System	Solution
Medium	1091. Shortest Path in Binary Matrix	Solution
Medium	2101. Detonate the Maximum Bombs	Solution
Medium	1376. Time Needed to Inform All Employees	Solution
Medium	547. Number of Provinces	Solution
Medium	1318. Minimum Flips to Make a OR b Equal to c	Solution
Medium	1802. Maximum Value at a Given Index in a Bounded Array	Solution
Medium	1146. Snapshot Array	Solution
Medium	2352. Equal Row and Column Pairs	Solution
Medium	1161. Maximum Level Sum of a Binary Tree	Solution
Medium	2090. K Radius Subarray Averages	Solution
Medium	714. Best Time to Buy and Sell Stock with Transaction Fee	Solution
Medium	1027. Longest Arithmetic Subsequence	Solution
Medium	2462. Total Cost to Hire K Workers	Solution
Medium	373. Find K Pairs with Smallest Sums	Solution
Medium	1514. Path with Maximum Probability	Solution
Medium	2305. Fair Distribution of Cookies	Solution
Medium	1493. Longest Subarray of 1's After Deleting One Element	Solution
Medium	2024. Maximize the Confusion of an Exam	Solution
Medium	802. Find Eventual Safe States	Solution
Medium	1218. Longest Arithmetic Subsequence of Given Difference	Solution
Medium	445. Add Two Numbers II	Solution
Medium	146. LRU Cache	Solution
Medium	435. Non-overlapping Intervals	Solution
Medium	735. Asteroid Collision	Solution
Medium	673. Number of Longest Increasing Subsequence	Solution
Medium	894. All Possible Full Binary Trees	Solution
Medium	767. Reorganize String	Solution
Medium	486. Predict the Winner	Solution
Medium	2079. Watering Plants	Solution
Medium	2811. Check if it is Possible to Split Array	Solution
Medium	74. Search a 2D Matrix	Solution
Medium	2616. Minimize the Maximum Difference of Pairs	Solution
Medium	81. Search in Rotated Sorted Array II	Solution
Medium	518. Coin Change II	Solution
Medium	1282. Group the People Given the Group Size They Belong To	Solution
Medium	2369. Check if There is a Valid Partition For The Array	Solution
Medium	86. Partition List	Solution
Medium	1615. Maximal Network Rank	Solution
Medium	97. Interleaving String	Solution
Medium	646. Maximum Length of Pair Chain	Solution
Medium	2483. Minimum Penalty for a Shop	Solution
Medium	2707. Extra Characters in a String	Solution
Medium	377. Combination Sum IV	Solution
Medium	1647. Minimum Deletions to Make Character Frequencies Unique	Solution
Medium	6. Zigzag Conversion	Solution
Medium	1584. Min Cost to Connect All Points	Solution
Medium	1631. Path With Minimum Effort	Solution
Medium	1658. Minimum Operations to Reduce X to Zero	Solution
Medium	1048. Longest String Chain	Solution
Medium	799. Champagne Tower	Solution
Medium	316. Remove Duplicate Letters	Solution
Medium	880. Decoded String at Index	Solution
Medium	50. Pow(x, n)	Solution
Medium	456. 132 Pattern	Solution
Medium	2038. Remove Colored Pieces if Both Neighbors are the Same Color	Solution
Medium	229. Majority Element II	Solution
Medium	343. Integer Break	Solution
Medium		Solution
Hard	140. Word Break II (DP + DFS)	Solution
Hard	41. First Missing Positive	Solution
Hard	732. My Calendar III	Solution
Hard	1335. Minimum Difficulty of a Job Schedule	Solution
Hard	2136. Earliest Possible Day of Full Bloom	Solution
Hard	1293. Shortest Path in a Grid with Obstacles Elimination	Solution
Hard	212. Word Search II	Solution
Hard	899. Orderly Queue	Solution
Hard	295. Find Median from Data Stream	Solution
Hard	587. Erect the Fence	Solution
Hard	224. Basic Calculator	Solution
Hard	1235. Maximum Profit in Job Scheduling	Solution
Hard	446. Arithmetic Slices II - Subsequence	Solution
Hard	834. Sum of Distances in Tree	Solution
Hard	980. Unique Paths III	Solution
Hard	149. Max Points on a Line	Solution
Hard	2246. Longest Path With Different Adjacent Characters	Solution
Hard	2306. Naming a Company	Solution
Hard	72. Edit Distance	Solution
Hard	2444. Count Subarrays With Fixed Bounds	Solution
Hard	1345. Jump Game IV	Solution
Hard	23. Merge k Sorted Lists	Solution
Hard	1857. Largest Color Value in a Directed Graph	Solution
Hard	879. Profitable Schemes	Solution
Hard	839. Similar String Groups	Solution
Hard	1697. Checking Existence of Edge Length Limited Paths	Solution
Hard	135. Candy	Solution
Hard	1799. Maximize Score After N Operations	Solution
Hard	1721. Swapping Nodes in a Linked List(LINKED_LIST)	Solution
Hard	124. Binary Tree Maximum Path Sum	Solution
Hard	1406. Stone Game III	Solution
Hard	1547. Minimum Cost to Cut a Stick	Solution
Hard	1569. Number of Ways to Reorder Array to Get Same BST	Solution
Hard	1187. Make Array Strictly Increasing	Solution
Hard	2448. Minimum Cost to Make Array Equal	Solution
Hard	956. Tallest Billboard	Solution
Hard	1575. Count All Possible Routes	Solution
Hard	864. Shortest Path to Get All Keys	Solution
Hard	1970. Last Day Where You Can Still Cross	Solution
Hard	1601. Maximum Number of Achievable Transfer Requests	Solution
Hard	2551. Put Marbles in Bags	Solution
Hard	2272. Substring With Largest Variance	Solution
Hard	1751. Maximum Number of Events That Can Be Attended II	Solution
Hard	1125. Smallest Sufficient Team	Solution
Hard	2141. Maximum Running Time of N Computers	Solution
Hard	664. Strange Printer	Solution
Hard	920. Number of Music Playlists	Solution
Hard	239. Sliding Window Maximum	Solution
Hard	68. Text Justification	Solution
Hard	403. Frog Jump	Solution
Hard	2366. Minimum Replacements to Sort the Array	Solution
Hard	1326. Minimum Number of Taps to Open to Water a Garden	Solution
Hard	1359. Count All Valid Pickup and Delivery Options	Solution
Hard	332. Reconstruct Itinerary	Solution
Hard	847. Shortest Path Visiting All Nodes	Solution
Hard	4. Median of Two Sorted Arrays	Solution
Hard		Solution