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How to Solve Count Cells in Overlapping Horizontal and Vertical Substrings Problem
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Medium#3529
LeetCode ProblemCount Cells in Overlapping Horizontal and Vertical Substrings
You are given an m x n matrix grid consisting of characters and a string pattern. A horizontal substring is a contiguous sequence of characters read from left to right. If the end of a row is reached before the substring is complete, it wraps to the first column of the next row and continues as needed. You do not wrap from the bottom row back to the top. A vertical substring is a contiguous sequence of characters read from top to bottom. If the bottom of a column is reached before the substring is complete, it wraps to the first row of the next column and continues as needed. You do not wrap from the last column back to the first. Count the number of cells in the matrix that satisfy the following condition: Return the count of these cells.
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Problem Breakdown
Understanding the Count Cells in Overlapping Horizontal and Vertical Substrings Problem
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Problem Statement
You are given an m x n matrix grid consisting of characters and a string pattern. A horizontal substring is a contiguous sequence of characters read from left to right. If the end of a row is reached before the substring is complete, it wraps to the first column of the next row and continues as needed. You do not wrap from the bottom row back to the top. A vertical substring is a contiguous sequence of characters read from top to bottom. If the bottom of a column is reached before the substring is complete, it wraps to the first row of the next column and continues as needed. You do not wrap from the last column back to the first. Count the number of cells in the matrix that satisfy the following condition: Return the count of these cells.
MediumProblem #3529
LeetCodeCount Cells in Overlapping Horizontal and Vertical Substrings
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Examples
# Example 1
Input
grid = [["a","a","c","c"],["b","b","b","c"],["a","a","b","a"],["c","a","a","c"],["a","a","b","a"]], pattern = "abaca"
Output
1
# Example 2
Input
grid = [["c","a","a","a"],["a","a","b","a"],["b","b","a","a"],["a","a","b","a"]], pattern = "aba"
Output
4
# Example 3
Input
grid = [["a"]], pattern = "a"
Output
1
Constraints
m == grid.length
n == grid[i].length
1 <= m, n <= 1000
1 <= m * n <= 105
1 <= pattern.length <= m * n
grid and pattern consist of only lowercase English letters.
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Solve Count Cells in Overlapping Horizontal and Vertical Substrings — You are given an m x n matrix grid consisting of characters and a string pattern...
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