LeetCode Solutions

Explore detailed LeetCode solutions in Java, C++ / Cpp, and Python with step-by-step explanations. Each solution includes time and space complexity analysis to help you optimize your coding skills for interviews and competitive programming.

 

Explore detailed LeetCode solutions in Java, C++ / Cpp, and Python with step-by-step explanations. Each solution includes time and space complexity analysis to help you optimize your coding skills for interviews and competitive programming.

In addition to core solutions, this collection is designed to help you understand why a particular approach works, not just how to write the code. Problems are explained using clear logic, edge-case handling, and optimal data structures commonly expected in technical interviews.

The solutions cover a wide range of difficulty levels, including Easy, Medium, and Hard problems, with a strong focus on frequently asked interview questions from arrays, strings, linked lists, trees, graphs, dynamic programming, greedy algorithms, and recursion. Wherever applicable, multiple approaches are discussed to compare brute-force methods with optimized solutions.

Whether you are preparing for FAANG interviews, practicing for online coding contests, or strengthening your problem-solving fundamentals, these LeetCode solutions provide a structured and practical learning path. The content is regularly updated to align with the latest problem patterns and interview trends.

Sorted:

2227. Encrypt and Decrypt Strings LeetCode Solution 2226. Maximum Candies Allocated to K Children LeetCode Solution 2225. Find Players With Zero or One Losses LeetCode Solution 2224. Minimum Number of Operations to Convert Time LeetCode Solution 2223. Sum of Scores of Built Strings LeetCode Solution 2222. Number of Ways to Select Buildings LeetCode Solution 2221. Find Triangular Sum of an Array LeetCode Solution 2220. Minimum Bit Flips to Convert Number LeetCode Solution 2218. Maximum Value of K Coins From Piles LeetCode Solution 2217. Find Palindrome With Fixed Length LeetCode Solution 2216. Minimum Deletions to Make Array Beautiful LeetCode Solution 2215. Find the Difference of Two Arrays LeetCode Solution 2213. Longest Substring of One Repeating Character LeetCode Solution 2212. Maximum Points in an Archery Competition LeetCode Solution 2211. Count Collisions on a Road LeetCode Solution 2210. Count Hills and Valleys in an Array LeetCode Solution 2209. Minimum White Tiles After Covering With Carpets LeetCode Solution 2208. Minimum Operations to Halve Array Sum LeetCode Solution 2207. Maximize Number of Subsequences in a String LeetCode Solution 2206. Divide Array Into Equal Pairs LeetCode Solution 2203. Minimum Weighted Subgraph With the Required Paths LeetCode Solution 2202. Maximize the Topmost Element After K Moves LeetCode Solution 2201. Count Artifacts That Can Be Extracted LeetCode Solution 2200. Find All K-Distant Indices in an Array LeetCode Solution 2197. Replace Non-Coprime Numbers in Array LeetCode Solution 2196. Create Binary Tree From Descriptions LeetCode Solution 2195. Append K Integers With Minimal Sum LeetCode Solution 2194. Cells in a Range on an Excel Sheet LeetCode Solution 2193. Minimum Number of Moves to Make Palindrome LeetCode Solution 2192. All Ancestors of a Node in a Directed Acyclic Graph LeetCode Solution