If Counting sort is stopped at a specific moment, the app becomes unusable.

[Exclearf]

Steps to reproduce

1. Choose any sorting algorithm.
2. Choose any array size.
3. Run the sort.
4. After the sort has counted elements (each element twice has been #FF4646), press the "SORTING..." button. If pressed in the correct timing, the app can behave in undefined ways.

P.S. See attached image¹ for example of what might happen.

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Result

If pressed in the correct timing, the app stops working. Pressing "SORT" button (if possible at all) does not affect the problem, but rethrows the exception. See image¹ for the error when button is pressed second time (the error is the same).

Footnotes

1. ↩ ↩²