Problem 658. Find the biggest empty box

You are given a matrix that contains only ones and zeros. Think of the ones as columns in an otherwise empty floor plan. You want to fit a big square into the empty space (denoted by zeros). What is the largest empty square sub-matrix you can find in the given matrix? You will return the row and column extent of the sub-matrix. The answer may not be unique. We will test that your sub-matrix is square, that it is empty, and that it contains the correct number of elements.
Example:
Input a = [ 1 0 0
0 0 0
0 0 0 ]
Output si = [ 2 3 2 3 ]
That is, the square indices are a(2:3,2:3). We verify that sum(sum(a(2:3,2:3))) is zero, and that it has four elements.

Solution Stats

31.12% Correct | 68.88% Incorrect
Last Solution submitted on Jul 30, 2024

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers485

Suggested Problems

More from this Author50

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!