Problem 9. Who Has the Most Change?

Solution 872

Submitted on 25 Jan 2012

This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

Show 1 older comment

Jake McIvor on 25 Jan 2012

What about
a = [ 1 0 0 0;
0 0 4 0];?

Will on 26 Jan 2012

Ditto, it appears the test case(s) don't catch this one.

Amy on 26 Jan 2012

Yes, this solution returns the person who has the most coins, not the most change.

Ned Gulley on 26 Jan 2012

I've added to the test suite to help close this loophole.

Test	Status	Code Input and Output
1	Pass	%% a = [1 2 1 15]; b = 1; assert(isequal(most_change(a),b))
2	Pass	%% a = [ 1 2 1 15; 0 8 5 9]; b = 2; assert(isequal(most_change(a),b))
3	Pass	%% a = [ 1 22 1 15; 12 3 13 7; 10 8 23 99]; b = 3; assert(isequal(most_change(a),b))
4	Fail	%% a = [ 1 0 0 0; 0 0 0 24]; b = 1; assert(isequal(most_change(a),b)) Error: Assertion failed.
5	Pass	%% a = [ 0 1 2 1; 0 2 1 1]; c = 1; assert(isequal(most_change(a),c))
6	Fail	%% % There is a lot of confusion about this problem. Watch this. a = [0 1 0 0; 0 0 1 0]; c = 2; assert(isequal(most_change(a),c)) % Now go back and read the problem description carefully. Error: Assertion failed.
7	Fail	%% a = [ 2 1 1 1; 1 2 1 1; 1 1 2 1; 1 1 1 2; 4 0 0 0]; c = 5; assert(isequal(most_change(a),c)) Error: Assertion failed.