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:

3529. Count Cells in Overlapping Horizontal and Vertical Substrings LeetCode Solution 3528. Unit Conversion I LeetCode Solution 3527. Find the Most Common Response LeetCode Solution 3525. Find X Value of Array II LeetCode Solution 3524. Find X Value of Array I LeetCode Solution 3523. Make Array Non-decreasing LeetCode Solution 3522. Calculate Score After Performing Instructions LeetCode Solution 3521. Find Product Recommendation Pairs LeetCode Solution 3521. Find Product Recommendation Pairs LeetCode Solution 3519. Count Numbers with Non-Decreasing Digits LeetCode Solution 3518. Smallest Palindromic Rearrangement II LeetCode Solution 3517. Smallest Palindromic Rearrangement I LeetCode Solution 3516. Find Closest Person LeetCode Solution 3515. Shortest Path in a Weighted Tree LeetCode Solution 3514. Number of Unique XOR Triplets II LeetCode Solution 3513. Number of Unique XOR Triplets I LeetCode Solution 3512. Minimum Operations to Make Array Sum Divisible by K LeetCode Solution 3510. Minimum Pair Removal to Sort Array II LeetCode Solution 3509. Maximum Product of Subsequences With an Alternating Sum Equal to K LeetCode Solution 3508. Implement Router LeetCode Solution 3507. Minimum Pair Removal to Sort Array I LeetCode Solution 3503. Longest Palindrome After Substring Concatenation I LeetCode Solution 3502. Minimum Cost to Reach Every Position LeetCode Solution 3500. Minimum Cost to Divide Array Into Subarrays LeetCode Solution 3499. Maximize Active Section with Trade I LeetCode Solution 3505. Minimum Operations to Make Elements Within K Subarrays Equal LeetCode Solution 3504. Longest Palindrome After Substring Concatenation II LeetCode Solution 3501. Maximize Active Section with Trade II LeetCode Solution 3498. Reverse Degree of a String LeetCode Solution 3497. Analyze Subscription Conversion LeetCode Solution