Search⌘ K
AI Features
Home
Courses
Grokking the Coding Interview Patterns in Go

Solution: Number of Islands

Explore the application of the Union Find pattern to solve the Number of Islands problem in a 2D grid. Understand how to connect adjacent land cells and count distinct islands by efficiently merging connected components. This lesson helps you implement and optimize the solution with clear code and complexity analysis.

We'll cover the following...

Statement

Let’s consider a scenario with an (m×n)(m \times n) 2D grid containing binary numbers, where '0' represents water and '1' represents land. If any '1' cells are connected to each other horizontally or vertically (not diagonally), they form an island. Your task is to return the total number of islands in the grid.

Constraints:

  • 1≤1 \leq grid.length ≤50\leq 50 ...