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:

1507. Reformat Date LeetCode Solution 1505. Minimum Possible Integer After at Most K Adjacent Swaps On Digits LeetCode Solution 1504. Count Submatrices With All Ones LeetCode Solution 1503. Last Moment Before All Ants Fall Out of a Plank LeetCode Solution 1502. Can Make Arithmetic Progression From Sequence LeetCode Solution 1499. Max Value of Equation LeetCode Solution 1498. Number of Subsequences That Satisfy the Given Sum Condition LeetCode Solution 1497. Check If Array Pairs Are Divisible by k LeetCode Solution 1496. Path Crossing LeetCode Solution 1494. Parallel Courses II LeetCode Solution 1493. Longest Subarray of 1’s After Deleting One Element LeetCode Solution 1492. The kth Factor of n LeetCode Solution 1491. Average Salary Excluding the Minimum and Maximum Salary LeetCode Solution 1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree LeetCode Solution 1488. Avoid Flood in The City LeetCode Solution 1487. Making File Names Unique LeetCode Solution 1486. XOR Operation in an Array LeetCode Solution 1484. Group Sold Products By The Date LeetCode Solution 1483. Kth Ancestor of a Tree Node LeetCode Solution 1482. Minimum Number of Days to Make m Bouquets LeetCode Solution 1481. Least Number of Unique Integers after K Removals LeetCode Solution 1480. Running Sum of 1d Array LeetCode Solution 1478. Allocate Mailboxes LeetCode Solution 1477. Find Two Non-overlapping Sub-arrays Each With Target Sum LeetCode Solution 1476. Subrectangle Queries LeetCode Solution 1475. Final Prices With a Special Discount in a Shop LeetCode Solution 1473. Paint House III LeetCode Solution 1472. Design Browser History LeetCode Solution 1471. The k Strongest Values in an Array LeetCode Solution 1470. Shuffle the Array LeetCode Solution