How to divide the area by slash in leetcode
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I. the content of the topic
In a N x N grid grid consisting of 1 x 1 squares, each 1 x 1 square is made up of /,\, or spaces. These characters divide the square into common areas.
(note that the backslash character is escaped, so it is indicated by "\". ).
The number of returned regions.
Example 1:
Enter:
[
"/"
"/"
]
Output: 2
Explanation: the 2x2 grid is as follows:
Example 2:
Enter:
[
"/"
"
]
Output: 1
Explanation: the 2x2 grid is as follows:
Example 3:
Enter:
[
"\ /"
"/\"
]
Output: 4
Explanation: (recall that because the\ character is escaped, "\" means\ /, and "/\" means /\. )
The 2x2 grid is as follows:
Example 4:
Enter:
[
"/\"
"\ /"
]
Output: 5
Explanation: (recall that because the\ character is escaped, "/" means /, and "\ /" means\ /. )
The 2x2 grid is as follows:
Example 5:
Enter:
[
"/ /"
"/"
]
Output: 3
Explanation: the 2x2 grid is as follows:
Tip:
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