Cody

# Problem 658. Find the biggest empty box

Solution 1917607

Submitted on 31 Aug 2019 by Gatech AE
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### Test Suite

Test Status Code Input and Output
1   Pass
a = [1 0; 0 0]; [r1,r2,c1,c2] = biggest_box(a); sub = a(r1:r2,c1:c2); [m,n] = size(sub); len = 1; assert(isequal(sum(sub(:)),0)) assert(isequal(m,len)); assert(isequal(n,len));

r1 = 1 r2 = 1 c1 = 2 c2 = 2

2   Pass
a = [1 0 0; 0 0 0; 0 0 0]; [r1,r2,c1,c2] = biggest_box(a); sub = a(r1:r2,c1:c2); [m,n] = size(sub); len = 2; assert(isequal(sum(sub(:)),0)) assert(isequal(m,len)); assert(isequal(n,len));

r1 = 1 r2 = 2 c1 = 2 c2 = 3

3   Pass
a = eye(9); [r1,r2,c1,c2] = biggest_box(a); sub = a(r1:r2,c1:c2); [m,n] = size(sub); len = 4; assert(isequal(sum(sub(:)),0)) assert(isequal(m,len)); assert(isequal(n,len));

r1 = 1 r2 = 1 c1 = 2 c2 = 2 r1 = 1 r2 = 2 c1 = 3 c2 = 4 r1 = 1 r2 = 3 c1 = 4 c2 = 6 r1 = 1 r2 = 4 c1 = 5 c2 = 8

4   Pass
a = double(magic(7)<6); [r1,r2,c1,c2] = biggest_box(a); sub = a(r1:r2,c1:c2); [m,n] = size(sub); len = 4; assert(isequal(sum(sub(:)),0)) assert(isequal(m,len)); assert(isequal(n,len));

r1 = 1 r2 = 3 c1 = 1 c2 = 3 r1 = 2 r2 = 5 c1 = 2 c2 = 5