In this blog post, we’ll explore a problem commonly encountered in graph theory: finding all possible paths from a source node to a target node in a directed graph. We’ll break down the problem, discuss a solution, and provide a…
Islands in a grid are formed by connecting adjacent land cells ( L ). We are tasked with finding the smallest island in a given grid. In this blog post, we’ll explore how to approach this problem using depth-first search (DFS),…
The Expression Add Operators problem is a classic LeetCode challenge where you’re given a string containing digits and a target value. The goal is to add binary operators ( + , - , or * ) between the digits so that the expressi…
When solving grid-based problems, one common challenge is to determine the maximum sum of values starting from the top-left corner of the grid and moving to the bottom-right corner. You are only allowed to move right or down. Th…