What changes are you trying to make? (e.g. Adding or removing code, refactoring existing code, adding reports)

I added code to complete the assignment.

What did you learn from the changes you have made?

These codes can successfully complete the task that asked. I was surprised that the sorted() function can also slice the string letter-by-letter then sort.

Was there another approach you were thinking about making? If so, what approach(es) were you thinking of?

Instead of using str.lower(), I can also use str.upper().

Were there any challenges? If so, what issue(s) did you face? How did you overcome it?

Not particularly in this assignment.

How were these changes tested?

Tested in jupyter notebook.

A reference to a related issue in your repository (if applicable)

Checklist

• [Y] I can confirm that my changes are working as intended