I solve the “1046. Last Stone Weight” problem from LeetCode using Python. I demonstrate how to efficiently solve this challenge by simulating a max-heap with Python’s heapq module. The video walks through the steps of converting stone weights into a heap, processing the two heaviest stones, and handling the results to determine the final weight…
In this video, I tackle the LeetCode problem “88. Merge Sorted Array” using Python. By leveraging the heapq.merge function, I demonstrate an efficient approach to merge two sorted arrays in-place. This method ensures that the merged array is both sorted and optimized for performance, making it ideal for coding interviews and algorithm practice. Check out…
I tackle the LeetCode problem “1161. Maximum Level Sum of a Binary Tree” using Python. The goal is to identify the level in a binary tree where the sum of the node values is the highest. By employing a Breadth-First Search (BFS) strategy, I efficiently traverse the tree level by level, computing the sum for…
In this video, I tackle the LeetCode problem “872. Leaf-Similar Trees” using Python. I demonstrate how to determine if two binary trees are leaf-similar by comparing their leaf sequences. Both iterative and recursive approaches are covered, highlighting efficient tree traversal techniques and code implementation strategies. Check out the video for an explanation of the solution,…
I solved the “374. Guess Number Higher or Lower” problem from LeetCode using Python. By leveraging a binary search algorithm, I efficiently narrow down the range of possible numbers to identify the target in logarithmic time. This approach not only highlights the power of binary search but also provides a clear, step-by-step solution for those…
In this video, I tackle LeetCode problem 1448, “Count Good Nodes in Binary Tree,” using Python. The challenge is to identify and count all nodes in a binary tree where no node in the path from the root to that node has a value greater than the node itself. I walk through both recursive and…
I break down the binary search algorithm step-by-step to efficiently find the index of a target value in a sorted array or determine the position where it should be inserted. This approach leverages O(log n) time complexity for optimal performance. Python Code:
In this video, I tackle the problem of finding the minimum element in a rotated sorted array using Python. By employing a binary search approach, I demonstrate how to efficiently locate the smallest element in O(log n) time, even when the array is rotated. Python Code:
I tackle the classic stock price problem where the goal is to maximize profit from a single buy and sell transaction. I walk you through a clear, step-by-step solution using Python, demonstrating how to efficiently find the maximum profit by keeping track of the lowest buying price and the highest potential profit as we iterate…
In my latest video, I tackle the classic LeetCode problem, “102. Binary Tree Level Order Traversal,” using Python. The problem requires traversing a binary tree level by level, and I demonstrate how to efficiently implement this using a breadth-first search (BFS) approach. I start by explaining how to use a queue to manage nodes at…
