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:

1203. Sort Items by Groups Respecting Dependencies LeetCode Solution 1202. Smallest String With Swaps LeetCode Solution 1201. Ugly Number III LeetCode Solution 1200. Minimum Absolute Difference LeetCode Solution 1195. Fizz Buzz Multithreaded LeetCode Solution 1193. Monthly Transactions I LeetCode Solution 1192. Critical Connections in a Network LeetCode Solution 1191. K-Concatenation Maximum Sum LeetCode Solution 1190. Reverse Substrings Between Each Pair of Parentheses LeetCode Solution 1189. Maximum Number of Balloons LeetCode Solution 1187. Make Array Strictly Increasing LeetCode Solution 1186. Maximum Subarray Sum with One Deletion LeetCode Solution 1185. Day of the Week LeetCode Solution 1184. Distance Between Bus Stops LeetCode Solution 1179. Reformat Department Table LeetCode Solution 1178. Number of Valid Words for Each Puzzle LeetCode Solution 1177. Can Make Palindrome from Substring LeetCode Solution 1175. Prime Arrangements LeetCode Solution 1174. Immediate Food Delivery II LeetCode Solution 1172. Dinner Plate Stacks LeetCode Solution 1171. Remove Zero Sum Consecutive Nodes from Linked List LeetCode Solution 1170. Compare Strings by Frequency of the Smallest Character LeetCode Solution 1169. Invalid Transactions LeetCode Solution 1164. Product Price at a Given Date LeetCode Solution 1163. Last Substring in Lexicographical Order LeetCode Solution 1162. As Far from Land as Possible LeetCode Solution 1161. Maximum Level Sum of a Binary Tree LeetCode Solution 1160. Find Words That Can Be Formed by Characters LeetCode Solution 1158. Market Analysis I LeetCode Solution 1157. Online Majority Element In Subarray LeetCode Solution