• The function name in the description is wrong
• No sample tests
• No random tests
• Asking the user to shadow a built-in function
• Duplicate
• Disrupting the beta process by advertizing this monstrosity to your friends people who know nothing about kata QA, and who would blindly upvote it

If you want to play around and (possibly) make it private, create a kumite. Publishing such atrociously low-quality content is not beneficial to anybody.