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:

1922. Count Good Numbers LeetCode Solution 1921. Eliminate Maximum Number of Monsters LeetCode Solution 1920. Build Array from Permutation LeetCode Solution 1916. Count Ways to Build Rooms in an Ant Colony LeetCode Solution 1915. Number of Wonderful Substrings LeetCode Solution 1914. Cyclically Rotating a Grid LeetCode Solution 1913. Maximum Product Difference Between Two Pairs LeetCode Solution 1912. Design Movie Rental System LeetCode Solution 1911. Maximum Alternating Subsequence Sum LeetCode Solution 1910. Remove All Occurrences of a Substring LeetCode Solution 1909. Remove One Element to Make the Array Strictly Increasing LeetCode Solution 1907. Count Salary Categories LeetCode Solution 1906. Minimum Absolute Difference Queries LeetCode Solution 1905. Count Sub Islands LeetCode Solution 1904. The Number of Full Rounds You Have Played LeetCode Solution 1903. Largest Odd Number in String LeetCode Solution 1901. Find a Peak Element II LeetCode Solution 1900. The Earliest and Latest Rounds Where Players Compete LeetCode Solution 1899. Merge Triplets to Form Target Triplet LeetCode Solution 1898. Maximum Number of Removable Characters LeetCode Solution 1897. Redistribute Characters to Make All Strings Equal LeetCode Solution 1896. Minimum Cost to Change the Final Value of Expression LeetCode Solution 1895. Largest Magic Square LeetCode Solution 1894. Find the Student that Will Replace the Chalk LeetCode Solution 1893. Check if All the Integers in a Range Are Covered LeetCode Solution 1890. The Latest Login in 2020 LeetCode Solution 1889. Minimum Space Wasted From Packaging LeetCode Solution 1888. Minimum Number of Flips to Make the Binary String Alternating LeetCode Solution 1887. Reduction Operations to Make the Array Elements Equal LeetCode Solution 1886. Determine Whether Matrix Can Be Obtained By Rotation LeetCode Solution