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:

2914. Minimum Number of Changes to Make Binary String Beautiful LeetCode Solution 2913. Subarrays Distinct Element Sum of Squares I LeetCode Solution 2911. Minimum Changes to Make K Semi-palindromes LeetCode Solution 2910. Minimum Number of Groups to Create a Valid Assignment LeetCode Solution 2909. Minimum Sum of Mountain Triplets II LeetCode Solution 2908. Minimum Sum of Mountain Triplets I LeetCode Solution 2906. Construct Product Matrix LeetCode Solution 2905. Find Indices With Index and Value Difference II LeetCode Solution 2904. Shortest and Lexicographically Smallest Beautiful String LeetCode Solution 2903. Find Indices With Index and Value Difference I LeetCode Solution 2902. Count of Sub-Multisets With Bounded Sum LeetCode Solution 2901. Longest Unequal Adjacent Groups Subsequence II LeetCode Solution 2900. Longest Unequal Adjacent Groups Subsequence I LeetCode Solution 2899. Last Visited Integers LeetCode Solution 2897. Apply Operations on Array to Maximize Sum of Squares LeetCode Solution 2896. Apply Operations to Make Two Strings Equal LeetCode Solution 2895. Minimum Processing Time LeetCode Solution 2894. Divisible and Non-divisible Sums Difference LeetCode Solution 2891. Method Chaining LeetCode Solution 2890. Reshape Data: Melt LeetCode Solution 2889. Reshape Data: Pivot LeetCode Solution 2888. Reshape Data: Concatenate LeetCode Solution 2887. Fill Missing Data LeetCode Solution 2886. Change Data Type LeetCode Solution 2885. Rename Columns LeetCode Solution 2884. Modify Columns LeetCode Solution 2883. Drop Missing Data LeetCode Solution 2882. Drop Duplicate Rows LeetCode Solution 2881. Create a New Column LeetCode Solution 2880. Select Data LeetCode Solution