Cody

# Problem 658. Find the biggest empty box

Solution 250513

Submitted on 29 May 2013 by andrea84
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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));

ok = 0 r1 = 2 r2 = 2 c1 = 1 c2 = 1

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));

ok = 0 r1 = 2 r2 = 2 c1 = 1 c2 = 1 ok = 0 0 0 0 r1 = 2 r2 = 3 c1 = 1 c2 = 2

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));

ok = 0 r1 = 2 r2 = 2 c1 = 1 c2 = 1 ok = 0 0 0 0 r1 = 3 r2 = 4 c1 = 1 c2 = 2 ok = 0 0 0 0 0 0 0 0 0 r1 = 4 r2 = 6 c1 = 1 c2 = 3 ok = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 r1 = 5 r2 = 8 c1 = 1 c2 = 4

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));

ok = 0 r1 = 1 r2 = 1 c1 = 1 c2 = 1 ok = 0 0 0 0 r1 = 1 r2 = 2 c1 = 1 c2 = 2 ok = 0 0 0 0 0 0 0 0 0 r1 = 1 r2 = 3 c1 = 1 c2 = 3 ok = 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 r1 = 2 r2 = 5 c1 = 2 c2 = 5