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Grokking the Coding Interview Patterns

Solution: Number of Islands

Understand how to apply the Union Find pattern to identify and count islands in a 2D grid of binary values. Explore step-by-step how to initialize the data structure, connect adjacent land cells, and calculate the total number of islands by managing connected components, improving problem-solving for graph-based coding interview questions.

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 ...