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:

1432. Max Difference You Can Get From Changing an Integer LeetCode Solution 1431. Kids With the Greatest Number of Candies LeetCode Solution 1425. Constrained Subsequence Sum LeetCode Solution 1424. Diagonal Traverse II LeetCode Solution 1423. Maximum Points You Can Obtain from Cards LeetCode Solution 1422. Maximum Score After Splitting a String LeetCode Solution 1420. Build Array Where You Can Find The Maximum Exactly K Comparisons LeetCode Solution 1419. Minimum Number of Frogs Croaking LeetCode Solution 1418. Display Table of Food Orders in a Restaurant LeetCode Solution 1417. Reformat The String LeetCode Solution 1416. Restore The Array LeetCode Solution 1415. The k-th Lexicographical String of All Happy Strings of Length n LeetCode Solution 1414. Find the Minimum Number of Fibonacci Numbers Whose Sum Is K LeetCode Solution 1413. Minimum Value to Get Positive Step by Step Sum LeetCode Solution 1411. Number of Ways to Paint N × 3 Grid LeetCode Solution 1410. HTML Entity Parser LeetCode Solution 1409. Queries on a Permutation With Key LeetCode Solution 1408. String Matching in an Array LeetCode Solution 1407. Top Travellers LeetCode Solution 1406. Stone Game III LeetCode Solution 1405. Longest Happy String LeetCode Solution 1404. Number of Steps to Reduce a Number in Binary Representation to One LeetCode Solution 1403. Minimum Subsequence in Non-Increasing Order LeetCode Solution 1402. Reducing Dishes LeetCode Solution 1401. Circle and Rectangle Overlapping LeetCode Solution 1400. Construct K Palindrome Strings LeetCode Solution 1399. Count Largest Group LeetCode Solution 1397. Find All Good Strings LeetCode Solution 1396. Design Underground System LeetCode Solution 1395. Count Number of Teams LeetCode Solution