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Given a binary matrix M of size n X m. Find the maximum area of a rectangle formed only of 1s in the given matrix.
Example 1:
Input: n = 4, m = 4 M[][] = {{0 1 1 0}, {1 1 1 1}, {1 1 1 1}, {1 1 0 0}} Output: 8 Explanation: For the above test case the matrix will look like 0 1 1 0 1 1 1 1 1 1 1 1 1 1 0 0 the max size rectangle is 1 1 1 1 1 1 1 1 and area is 4 *2 = 8.
Your Task:
Your task is to complete the function maxArea which returns the maximum size rectangle area in a binary-sub-matrix with all 1’s. The function takes 3 arguments the first argument is the Matrix M[ ] [ ] and the next two are two integers n and m which denotes the size of the matrix M.
Expected Time Complexity : O(n*m)
Expected Auixiliary Space : O(m)
Constraints:
1<=n,m<=1000
0<=M[][]<=1
Note:The Input/Ouput format and Example given are used for system's internal purpose, and should be used by a user for Expected Output only. As it is a function problem, hence a user should not read any input from stdin/console. The task is to complete the function specified, and not to write the full code.
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