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Regions Cut By Slashes

Moderate
0/80
Average time to solve is 30m
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Asked in companies
UberFlipkartInspirisys

Problem statement

This time our favorite Ninja wants to buy a house. But they are unable to count the number of rooms in the house. So they need your help to count the number of rooms.

Note:
A house is represented by a matrix where “\” and “/” represent a wall and blank space is empty space. We will consider two rooms different if we will be unable to reach another room.

Your task is to return the number of rooms. For a better explanation, see the example.

Example:
Input: 
[
  “ /”
  “/\”
]

Output: 3

Explanation: 2 X 2 house is shown below:

Detailed explanation ( Input/output format, Notes, Images )
Constraints:
1 <= T <= 5
2 <= N <= 30

Time limit: 1 sec
Sample Input 1:
2
2
\/
/\
3
/ /
 / 
/  
Sample Output 1:
4    
3
Explanation of Sample Output 1:
In test case 1, We can see there are 4 separate rooms. 

In test case 2, we can see there are 3 separate rooms.

Sample Input 2:
1
2
 /
/\

Sample Output 2:

3
Explanation of Sample Output 2:
In test case 1, We can see there are 4 separate rooms. 

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