Codeigniter Folder Structure For CMS

I have attached an image of my codeigniter folder structure. When in wamp it is working fine. But in Subdomain. It is not working at all.

In wamp i am running code like this
localhost/mycms/public (For public View)
localhost/mycms/admin (For AdminView)


But in Subdomain testing.website.com pointing at Document_Root/mycms/public it is working fine.
But In case of Admin it is not working !!

 As i am learning Can i Get a suitable suggestion how Do i Place the folder at right place to do the project correctly.

Thanks in Advance  !!

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