Furloughs are hitting government workers this year. To commemorate getting one unpaid day off each week until the end of September, this Cody problem requires a string for an input. The output will be the same string, but with every fifth letter in the string replaced with 'X'. Numbers, spaces, and punctuation marks are unaffected, which is more than we can say for the government workers.
For example, 'abcde?fgh123ij' would be replaced with 'abcdX?fgh123iX' Good luck!
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I'll solve this one on my first furlough day.
Is there a new problem with the testcases or with Cody?
I have a solution that works in R2018b on my computer, but in Cody the input argument is not being reset after the first testcase...
The problem with the first test case has been fixed.