Solution 220095

Submitted on 21 Mar 2013 by Lukas

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2 Comments

2 Comments

Lukas on 21 Mar 2013

Hi everyone
I could use a bit of help on this solution, as i am just a freshman. By reading it now line 4 mind sound strange, but without it, it didn't work. I always had one penny less than expected. I thought, that this could be a numerical problem using mod() and fix() in the way, that the mod function decreases the value a litte bit and than fix doesn't work right. I am not quiet sure and could need some help by an experienced matlab user. Thanks in advance and a nice day :)
Lukas

Tim on 21 Mar 2013

In test case 2, 135.01 is represented internally as 135.009999999999991, so the fractional part is slightly less than 0.01, which leads to the problem. You could try rounding the input (and the change vector) to an integer number of pennies so all the calculations would use integers.

Test Suite

Test	Status	Code Input and Output
1	Pass	%% a = [257.68]; b = [2 1 0 0 1 1 0 1 0 1 1 3]; out = makingChange(a); assert(isequal(out(:), b(:))) a = 257.6890
2	Pass	%% a = [135.01]; b = [1 0 1 1 1 0 0 0 0 0 0 1]; out = makingChange(a); assert(isequal(out(:), b(:))) a = 135.0190
3	Pass	%% a = [10035.99]; b = [100 0 1 1 1 0 0 1 1 2 0 4]; out = makingChange(a); assert(isequal(out(:), b(:))) a = 1.0036e+04

Test

Status

Code Input and Output

Pass

%% a = [257.68]; b = [2 1 0 0 1 1 0 1 0 1 1 3]; out = makingChange(a); assert(isequal(out(:), b(:)))

a = 257.6890

Pass

%% a = [135.01]; b = [1 0 1 1 1 0 0 0 0 0 0 1]; out = makingChange(a); assert(isequal(out(:), b(:)))

a = 135.0190

Pass

%% a = [10035.99]; b = [100 0 1 1 1 0 0 1 1 2 0 4]; out = makingChange(a); assert(isequal(out(:), b(:)))

a = 1.0036e+04

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