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:

3159. Find Occurrences of an Element in an Array LeetCode Solution 3158. Find the XOR of Numbers Which Appear Twice LeetCode Solution 3154. Find Number of Ways to Reach the K-th Stair LeetCode Solution 3153. Sum of Digit Differences of All Pairs LeetCode Solution 3152. Special Array II LeetCode Solution 3151. Special Array I LeetCode Solution 3149. Find the Minimum Cost Array Permutation LeetCode Solution 3148. Maximum Difference Score in a Grid LeetCode Solution 3147. Taking Maximum Energy From the Mystic Dungeon LeetCode Solution 3146. Permutation Difference between Two Strings LeetCode Solution 3145. Find Products of Elements of Big Array LeetCode Solution 3144. Minimum Substring Partition of Equal Character Frequency LeetCode Solution 3143. Maximum Points Inside the Square LeetCode Solution 3142. Check if Grid Satisfies Conditions LeetCode Solution 3139. Minimum Cost to Equalize Array LeetCode Solution 3138. Minimum Length of Anagram Concatenation LeetCode Solution 3137. Minimum Number of Operations to Make Word K-Periodic LeetCode Solution 3136. Valid Word LeetCode Solution 3134. Find the Median of the Uniqueness Array LeetCode Solution 3133. Minimum Array End LeetCode Solution 3132. Find the Integer Added to Array II LeetCode Solution 3131. Find the Integer Added to Array I LeetCode Solution 3130. Find All Possible Stable Binary Arrays II LeetCode Solution 3129. Find All Possible Stable Binary Arrays I LeetCode Solution 3128. Right Triangles LeetCode Solution 3127. Make a Square with the Same Color LeetCode Solution 3123. Find Edges in Shortest Paths LeetCode Solution 3122. Minimum Number of Operations to Satisfy Conditions LeetCode Solution 3121. Count the Number of Special Characters II LeetCode Solution 3120. Count the Number of Special Characters I LeetCode Solution