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:

1394. Find Lucky Integer in an Array LeetCode Solution 1393. Capital Gain/Loss LeetCode Solution 1392. Longest Happy Prefix LeetCode Solution 1391. Check if There is a Valid Path in a Grid LeetCode Solution 1390. Four Divisors LeetCode Solution 1389. Create Target Array in the Given Order LeetCode Solution 1388. Pizza With 3n Slices LeetCode Solution 1387. Sort Integers by The Power Value LeetCode Solution 1386. Cinema Seat Allocation LeetCode Solution 1385. Find the Distance Value Between Two Arrays LeetCode Solution 1383. Maximum Performance of a Team LeetCode Solution 1382. Balance a Binary Search Tree LeetCode Solution 1381. Design a Stack With Increment Operation LeetCode Solution 1380. Lucky Numbers in a Matrix LeetCode Solution 1379. Find a Corresponding Node of a Binary Tree in a Clone of That Tree LeetCode Solution 1378. Replace Employee ID With The Unique Identifier LeetCode Solution 1377. Frog Position After T Seconds LeetCode Solution 1376. Time Needed to Inform All Employees LeetCode Solution 1375. Number of Times Binary String Is Prefix-Aligned LeetCode Solution 1374. Generate a String With Characters That Have Odd Counts LeetCode Solution 1373. Maximum Sum BST in Binary Tree LeetCode Solution 1372. Longest ZigZag Path in a Binary Tree LeetCode Solution 1371. Find the Longest Substring Containing Vowels in Even Counts LeetCode Solution 1370. Increasing Decreasing String LeetCode Solution 1368. Minimum Cost to Make at Least One Valid Path in a Grid LeetCode Solution 1367. Linked List in Binary Tree LeetCode Solution 1366. Rank Teams by Votes LeetCode Solution 1365. How Many Numbers Are Smaller Than the Current Number LeetCode Solution 1363. Largest Multiple of Three LeetCode Solution 1362. Closest Divisors LeetCode Solution