Find largest rectangle containing all zero's in an N X N binary matrix

Posted by Rajendra on Stack Overflow See other posts from Stack Overflow or by Rajendra
Published on 2010-03-19T15:24:11Z Indexed on 2010/03/19 15:31 UTC
Read the original article Hit count: 712

Given an N X N binary matrix (containing only 0's or 1's). How can we go about finding largest rectangle containing all 0's?

Example:

      I
    0 0 0 0 1 0
    0 0 1 0 0 1
II->0 0 0 0 0 0
    1 0 0 0 0 0
    0 0 0 0 0 1 <--IV
    0 0 1 0 0 0
            IV 

is a 6 X 6 binary matrix, return value in this case will be Cell 1: (2, 1) and Cell 2: (4, 4). Resulting sub-matrix can be square or rectangle. Return value can be size of the largest sub-matrix of all 0's also, for example, here 3 X 4.

© Stack Overflow or respective owner

Related posts about arrays

Related posts about interview-questions