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:

1997. First Day Where You Have Been in All the Rooms LeetCode Solution 1996. The Number of Weak Characters in the Game LeetCode Solution 1995. Count Special Quadruplets LeetCode Solution 1994. The Number of Good Subsets LeetCode Solution 1993. Operations on Tree LeetCode Solution 1992. Find All Groups of Farmland LeetCode Solution 1991. Find the Middle Index in Array LeetCode Solution 1987. Number of Unique Good Subsequences LeetCode Solution 1986. Minimum Number of Work Sessions to Finish the Tasks LeetCode Solution 1985. Find the Kth Largest Integer in the Array LeetCode Solution 1984. Minimum Difference Between Highest and Lowest of K Scores LeetCode Solution 1982. Find Array Given Subset Sums LeetCode Solution 1981. Minimize the Difference Between Target and Chosen Elements LeetCode Solution 1980. Find Unique Binary String LeetCode Solution 1979. Find Greatest Common Divisor of Array LeetCode Solution 1978. Employees Whose Manager Left the Company LeetCode Solution 1977. Number of Ways to Separate Numbers LeetCode Solution 1976. Number of Ways to Arrive at Destination LeetCode Solution 1975. Maximum Matrix Sum LeetCode Solution 1974. Minimum Time to Type Word Using Special Typewriter LeetCode Solution 1971. Find if Path Exists in Graph LeetCode Solution 1970. Last Day Where You Can Still Cross LeetCode Solution 1969. Minimum Non-Zero Product of the Array Elements LeetCode Solution 1968. Array With Elements Not Equal to Average of Neighbors LeetCode Solution 1967. Number of Strings That Appear as Substrings in Word LeetCode Solution 1965. Employees With Missing Information LeetCode Solution 1964. Find the Longest Valid Obstacle Course at Each Position LeetCode Solution 1963. Minimum Number of Swaps to Make the String Balanced LeetCode Solution 1962. Remove Stones to Minimize the Total LeetCode Solution 1961. Check If String Is a Prefix of Array LeetCode Solution