Search⌘ K
AI Features

Solution: Regions Cut by Slashes

Understand how to apply the Union Find algorithm to solve the problem of counting distinct regions formed by slashes and spaces in an n x n grid. This lesson guides you through dividing each grid square, merging regions based on slash types, and connecting adjacent squares to compute the total number of separate regions using efficient graph traversal techniques.

Statement

An n×nn \times n grid is composed of nn, 1×11 \times 1 squares, where each 1×11 \times 1 square consists of a “/”, “\”, or a blank space. These characters divide the square into adjacent regions.

Given the grid represented as a string array, return the number of regions.

Note:

  1. Backslash characters are escaped, so “\” is represented as “\\”.
  2. A 1×11 \times 1 square in the grid will be referred to as a box.

Constraints:

  • The grid consists of only “/”, “\”, or " " characters.
  • 1 \leq grid.length \leq
...