Does anyone have a script to have blank address types to populate with the address type that exists?

Summary:

We have a new business requirement that says that Home Address and Mailing Address needs to be populated for all employees. Does anyone have a script that says if Home Address is populated and Mailing address is blank, update Mailing with Home address. If Mailing address is populated and Home Address is blank, update Home address with Mailing Address.

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