# 959. Regions Cut By Slashes LeetCode Solution | Easy Approach Share:

Regions Cut By Slashes An `n x n` grid is composed of `1 x 1` squares where each `1 x 1` square consists of a `'/'``'\'`, or blank space `' '`. These characters divide the square into contiguous regions.

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

Note that backslash characters are escaped, so a `'\'` is represented as `'\\'`.

Example 1:

```Input: grid = [" /","/ "]
Output: 2
```

Example 2:

```Input: grid = [" /","  "]
Output: 1
```

Example 3:

```Input: grid = ["/\\","\\/"]
Output: 5
Explanation: Recall that because \ characters are escaped, "\\/" refers to \/, and "/\\" refers to /\.
```

Constraints:

• `n == grid.length == grid[i].length`
• `1 <= n <= 30`
• `grid[i][j]` is either `'/'``'\'`, or `' '`.

Time: O(n)
Space: O(n)

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