DIY: Number of Islands
Explore how to implement the number of islands problem in Java by analyzing a 2D grid of land and water. This lesson helps you understand how to traverse and count connected land areas efficiently, improving your problem-solving skills for coding interviews with Facebook-style questions.
We'll cover the following...
We'll cover the following...
Problem statement
Given an m x n 2D grid map of 1's (land) and 0's (water), return the number of islands.
An island is surrounded by water and is ...