GitHub - LUCKYALI1/LeetCode-Solutions: A curated collection of optimized LeetCode solutions with explanations and complexity analysis. Perfect for DSA practice, interview prep, and mastering problem-solving patterns.

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A curated collection of optimized LeetCode solutions with explanations and complexity analysis. Perfect for DSA practice, interview prep, and mastering problem-solving patterns.

array backtacking bst dp graph linked-list queue sliding-window stack string tree-structure two-pointers

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Name		Name	Last commit message	Last commit date
Latest commit History 235 Commits
1004. Max Consecutive Ones III		1004. Max Consecutive Ones III
1007. Minimum Domino Rotations For Equal Row		1007. Minimum Domino Rotations For Equal Row
1008. Construct Binary Search Tree from Preorder Traversal		1008. Construct Binary Search Tree from Preorder Traversal
1011. Capacity To Ship Packages Within D Days		1011. Capacity To Ship Packages Within D Days
1014. Best Sightseeing Pair		1014. Best Sightseeing Pair
1018. Binary Prefix Divisible By 5		1018. Binary Prefix Divisible By 5
1028. Recover a Tree From Preorder Traversal		1028. Recover a Tree From Preorder Traversal
105. Construct Binary Tree from Preorder and Inorder Traversal		105. Construct Binary Tree from Preorder and Inorder Traversal
106. Construct Binary Tree from Inorder and Postorder Traversal		106. Construct Binary Tree from Inorder and Postorder Traversal
1095. Find in Mountain Array		1095. Find in Mountain Array
11. Container With Most Water		11. Container With Most Water
110. Balanced Binary Tree		110. Balanced Binary Tree
112. Path Sum		112. Path Sum
1123. Lowest Common Ancestor of Deepest Leaves		1123. Lowest Common Ancestor of Deepest Leaves
114. Flatten Binary Tree to Linked List		114. Flatten Binary Tree to Linked List
1161. Maximum Level Sum of a Binary Tree		1161. Maximum Level Sum of a Binary Tree
118. Pascal's Triangle		118. Pascal's Triangle
1200. Minimum Absolute Difference.mdn		1200. Minimum Absolute Difference.mdn
1261. Find Elements in a Contaminated Binary Tree		1261. Find Elements in a Contaminated Binary Tree
1267. Count Servers that Communicate		1267. Count Servers that Communicate
129. Sum Root to Leaf Numbers		129. Sum Root to Leaf Numbers
1295. Find Numbers with Even Number of Digits		1295. Find Numbers with Even Number of Digits
1304. Find N Unique Integers Sum up to Zero		1304. Find N Unique Integers Sum up to Zero
1339. Maximum Product of Splitted Binary Tree		1339. Maximum Product of Splitted Binary Tree
1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold		1343. Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold
134_Gas_Station		134_Gas_Station
1352. Product of the Last K Numbers		1352. Product of the Last K Numbers
1382. Balance a Binary Search Tree		1382. Balance a Binary Search Tree
139. Word Break		139. Word Break
1390. Four Divisors.md		1390. Four Divisors.md
1394. Find Lucky Integer in an Array		1394. Find Lucky Integer in an Array
1400.Construct K Palindrome Strings		1400.Construct K Palindrome Strings
1404. Number of Steps to Reduce a Number in Binary Representation to One.cpp		1404. Number of Steps to Reduce a Number in Binary Representation to One.cpp
1408. String Matching in an Array		1408. String Matching in an Array
1422. Maximum Score After Splitting a String		1422. Maximum Score After Splitting a String
1423. Maximum Points You Can Obtain from Cards		1423. Maximum Points You Can Obtain from Cards
1462. Course Schedule IV		1462. Course Schedule IV
1464. Maximum Product of Two Elements in an Array.cpp		1464. Maximum Product of Two Elements in an Array.cpp
1470. Shuffle the Array		1470. Shuffle the Array
1475. Final Prices With a Special Discount in a Shop		1475. Final Prices With a Special Discount in a Shop
1493. Longest Subarray of 1's After Deleting One Element		1493. Longest Subarray of 1's After Deleting One Element
15. 3Sum		15. 3Sum
1504 Count Submatrices With All Ones		1504 Count Submatrices With All Ones
1524. Number of Sub-arrays With Odd Sum		1524. Number of Sub-arrays With Odd Sum
1550. Three Consecutive Odds		1550. Three Consecutive Odds
1578. Minimum Time to Make Rope Colorful		1578. Minimum Time to Make Rope Colorful
1622. Fancy Sequence.cpp		1622. Fancy Sequence.cpp
1625. Lexicographically Smallest String After Applying Operations		1625. Lexicographically Smallest String After Applying Operations
165. Compare Version Numbers		165. Compare Version Numbers
1653. Minimum Deletions to Make String Balanced		1653. Minimum Deletions to Make String Balanced
167. Two Sum II - Input Array Is Sorted		167. Two Sum II - Input Array Is Sorted
1674. Minimum Moves to Make Array Complementary		1674. Minimum Moves to Make Array Complementary
1718. Construct the Lexicographically Largest Valid Sequence		1718. Construct the Lexicographically Largest Valid Sequence
1726. Tuple with Same Product		1726. Tuple with Same Product
1732. Find the Highest Altitude		1732. Find the Highest Altitude
1749. Maximum Absolute Sum of Any Subarray		1749. Maximum Absolute Sum of Any Subarray
1750. Minimum Length of String After Deleting Similar Ends		1750. Minimum Length of String After Deleting Similar Ends
1760. Minimum Limit of Balls in a Bag		1760. Minimum Limit of Balls in a Bag
1765. Map of Highest Peak		1765. Map of Highest Peak
1790. Check if One String Swap Can Make Strings Equal		1790. Check if One String Swap Can Make Strings Equal
1800. Maximum Ascending Subarray Sum		1800. Maximum Ascending Subarray Sum
1863. Sum of All Subset XOR Totals		1863. Sum of All Subset XOR Totals
1877. Minimize Maximum Pair Sum in Array.cpp		1877. Minimize Maximum Pair Sum in Array.cpp
1910. Remove All Occurrences of a Substring		1910. Remove All Occurrences of a Substring
1920. Build Array from Permutation		1920. Build Array from Permutation
1935. Maximum Number of Words You Can Type		1935. Maximum Number of Words You Can Type
1975. Maximum Matrix Sum.md		1975. Maximum Matrix Sum.md
198. House Robber		198. House Robber
1980. Find Unique Binary String		1980. Find Unique Binary String
1984. Minimum Difference Between Highest and Lowest of K Scores.cpp		1984. Minimum Difference Between Highest and Lowest of K Scores.cpp
1991. Find the Middle Index in Array		1991. Find the Middle Index in Array
207. Course Schedule		207. Course Schedule
208. Implement Trie (Prefix Tree)		208. Implement Trie (Prefix Tree)
2099. Find Subsequence of Length K With the Largest Sum		2099. Find Subsequence of Length K With the Largest Sum
210. Course Schedule II		210. Course Schedule II
211. Design Add and Search Words Data Structure		211. Design Add and Search Words Data Structure
2127. Maximum Employees to Be Invited to a Meeting		2127. Maximum Employees to Be Invited to a Meeting
2130. Maximum Twin Sum of a Linked List.cpp		2130. Maximum Twin Sum of a Linked List.cpp
215. Kth Largest Element in an Array		215. Kth Largest Element in an Array
2161. Partition Array According to Given Pivot		2161. Partition Array According to Given Pivot
2161_Partition Array According to Given Pivot.cpp		2161_Partition Array According to Given Pivot.cpp
2176. Count Equal and Divisible Pairs in an Array		2176. Count Equal and Divisible Pairs in an Array
2197. Replace Non-Coprime Numbers in Array		2197. Replace Non-Coprime Numbers in Array
2264. Largest 3-Same-Digit Number in String		2264. Largest 3-Same-Digit Number in String
2273. Find Resultant Array After Removing Anagrams		2273. Find Resultant Array After Removing Anagrams
229. Majority Element II.cpp		229. Majority Element II.cpp
2294. Partition Array Such That Maximum Difference Is K		2294. Partition Array Such That Maximum Difference Is K
230. Kth Smallest Element in a BST		230. Kth Smallest Element in a BST
2302. Count Subarrays With Score Less Than K		2302. Count Subarrays With Score Less Than K
2342. Max Sum of a Pair With Equal Sum of Digits		2342. Max Sum of a Pair With Equal Sum of Digits
235. Lowest Common Ancestor of a Binary Search Tree		235. Lowest Common Ancestor of a Binary Search Tree
236. Lowest Common Ancestor of a Binary Tree		236. Lowest Common Ancestor of a Binary Tree
2364. Count Number of Bad Pairs		2364. Count Number of Bad Pairs
2375. Construct Smallest Number From DI String		2375. Construct Smallest Number From DI String
2379. Minimum Recolors to Get K Consecutive Black Blocks		2379. Minimum Recolors to Get K Consecutive Black Blocks
2381. Shifting Letters II		2381. Shifting Letters II
2401. Longest Nice Subarray		2401. Longest Nice Subarray
2420. Find All Good Indices		2420. Find All Good Indices
2438. Range Product Queries of Powers		2438. Range Product Queries of Powers
2460. Apply Operations to an Array		2460. Apply Operations to an Array

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