I like my pasta with hard shells and extra cheese, you know, for that squishy chewy gooey effect. It should also be a little wriggly, to really enhance the textures... Yum!

Wondering if it has something to do with the number being at the start of the word, but that doesn't quite make sense

But that's exactly it ;-) %[] only matches a non-empty sequence of characters. As soon as the match fails, sscanf() returns, without parsing the integer.

you are iterating on an list with a foreach loop while modifying it at the same time, this is very rarely a good thing to do, as it results in code that is hard to understand and a high probability of bugs. in some scenarios, you effectively delete some elements before they have been looped on, e.g. consider:

["two2", "one1"] --> after the first iteration of your loop, this will be converted to ["two2", "two2"]. "one1" never gets iterated on.

• Be careful with strncpy(), it is a terrible function. It does not nul-terminate dest if there is no nul byte among the first n bytes of src. As a result ordered is not nul-terminated in your code
• your code does not work for e.g. "1 4 3 2 5"

I dont know what I'm Doing HAHAHAH

Even with everything commented out, I get the following error when I press the Test button.

Traceback (most recent call last):
  File "/workspace/default/tests.py", line 3, in <module>
Test.assert_equals(order("is2 Thi1s T4est 3a"), "Thi1s is2 3a T4est")
^^^^
NameError: name 'Test' is not defined. Did you mean: 'test'?

Approved

Groovy Translation

Not a kata suggestion ! ^^

don't try to do it in a fancy way you can do it with just basics
actually if you see my code I may look like dumb people

It is your code that throws this error. Don't forget to look at the stack trace in cases like this:

System.FormatException : Input string was not in a correct format.
 at System.Number.ThrowOverflowOrFormatException(ParsingStatus status, TypeCode type)
 at System.Int32.Parse(String s)
 at Kata.Order(String words)
 at Solution.SolutionTest.SampleTest()