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:

2997. Minimum Number of Operations to Make Array XOR Equal to K LeetCode Solution 2996. Smallest Missing Integer Greater Than Sequential Prefix Sum LeetCode Solution 2983. Palindrome Rearrangement Queries LeetCode Solution 2982. Find Longest Special Substring That Occurs Thrice II LeetCode Solution 2981. Find Longest Special Substring That Occurs Thrice I LeetCode Solution 2980. Check if Bitwise OR Has Trailing Zeros LeetCode Solution 2977. Minimum Cost to Convert String II LeetCode Solution 2976. Minimum Cost to Convert String I LeetCode Solution 2975. Maximum Square Area by Removing Fences From a Field LeetCode Solution 2974. Minimum Number Game LeetCode Solution 2973. Find Number of Coins to Place in Tree Nodes LeetCode Solution 2972. Count the Number of Incremovable Subarrays II LeetCode Solution 2971. Find Polygon With the Largest Perimeter LeetCode Solution 2970. Count the Number of Incremovable Subarrays I LeetCode Solution 2968. Apply Operations to Maximize Frequency Score LeetCode Solution 2967. Minimum Cost to Make Array Equalindromic LeetCode Solution 2966. Divide Array Into Arrays With Max Difference LeetCode Solution 2965. Find Missing and Repeated Values LeetCode Solution 2963. Count the Number of Good Partitions LeetCode Solution 2962. Count Subarrays Where Max Element Appears at Least K Times LeetCode Solution 2961. Double Modular Exponentiation LeetCode Solution 2960. Count Tested Devices After Test Operations LeetCode Solution 2959. Number of Possible Sets of Closing Branches LeetCode Solution 2958. Length of Longest Subarray With at Most K Frequency LeetCode Solution 2957. Remove Adjacent Almost-Equal Characters LeetCode Solution 2956. Find Common Elements Between Two Arrays LeetCode Solution 2954. Count the Number of Infection Sequences LeetCode Solution 2953. Count Complete Substrings LeetCode Solution 2952. Minimum Number of Coins to be Added LeetCode Solution 2951. Find the Peaks LeetCode Solution