417. Pacific Atlantic Water Flow | Leetcode | Medium | Java | 2 D Array | DFS | Amazon

In tackling this particular challenge, we delve into the realm of a 2D array and navigate through it using a depth-first search strategy. What sets these problems apart is their penchant for steering us away from the obvious. Rather than straightforwardly identifying cells through which water reaches both the Pacific and Atlantic oceans, our mission is to pinpoint cells that serve as conduits for water to flow towards neighboring cells situated along the ocean borders. The crux lies in adopting a counterintuitive approach, where the initiation of our exploration begins not from centrally positioned cells, but rather from the adjacent ones themselves. This nuanced methodology involves tracing the course of water flow as it meanders through the array, ultimately leading us to the cells that hold the key to facilitating this intricate journey towards both the Pacific and Atlantic expanses. Link to the problem: https://leetcode.com/problems/pacific-atlantic-water-flow/description/ Other problems for practice: https://youtu.be/fuRLhhOjn1Y https://youtu.be/IW7z4oQfkno https://youtu.be/tdypkt5BPUQ https://youtu.be/4EUpwKDqH28 https://youtu.be/z3j75kNz1qc https://youtu.be/1zMFO6S5Dhs https://youtu.be/sMZvHAop55k https://youtu.be/FSpJSUgx7c0 https://youtu.be/pZMs3G6x2y8