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:

2879. Display the First Three Rows LeetCode Solution 2878. Get the Size of a DataFrame LeetCode Solution 2877. Create a DataFrame from List LeetCode Solution 2876. Count Visited Nodes in a Directed Graph LeetCode Solution 2875. Minimum Size Subarray in Infinite Array LeetCode Solution 2874. Maximum Value of an Ordered Triplet II LeetCode Solution 2873. Maximum Value of an Ordered Triplet I LeetCode Solution 2872. Maximum Number of K-Divisible Components LeetCode Solution 2871. Split Array Into Maximum Number of Subarrays LeetCode Solution 2870. Minimum Number of Operations to Make Array Empty LeetCode Solution 2869. Minimum Operations to Collect Elements LeetCode Solution 2867. Count Valid Paths in a Tree LeetCode Solution 2866. Beautiful Towers II LeetCode Solution 2865. Beautiful Towers I LeetCode Solution 2864. Maximum Odd Binary Number LeetCode Solution 2862. Maximum Element-Sum of a Complete Subset of Indices LeetCode Solution 2861. Maximum Number of Alloys LeetCode Solution 2860. Happy Students LeetCode Solution 2859. Sum of Values at Indices With K Set Bits LeetCode Solution 2858. Minimum Edge Reversals So Every Node Is Reachable LeetCode Solution 2857. Count Pairs of Points With Distance k LeetCode Solution 2856. Minimum Array Length After Pair Removals LeetCode Solution 2855. Minimum Right Shifts to Sort the Array LeetCode Solution 2851. String Transformation LeetCode Solution 2850. Minimum Moves to Spread Stones Over Grid LeetCode Solution 2849. Determine if a Cell Is Reachable at a Given Time LeetCode Solution 2848. Points That Intersect With Cars LeetCode Solution 2846. Minimum Edge Weight Equilibrium Queries in a Tree LeetCode Solution 2845. Count of Interesting Subarrays LeetCode Solution 2844. Minimum Operations to Make a Special Number LeetCode Solution