omg

nice move dude

Very clever! haha

But there is no "Z"

Why is it clever?

Very efficient and easy on the eyes, but this code fails case-sensitivity (even though the challenge didn't really specify.) :)

I knew there would be a way to do this with replaces, clever

The code is too verbose. At least you should reduce it to a single return statement.

basically did the same but just using the lowercase

you've solved the same as I've solved wether we're beginners or we think alike ;p

Clever and simple, I think it shortened by replacing them with lowercase values and just call to uppercase at end.

I did something very similar. Only difference is I mapped all 4 of "T", "A", "C", and "G" to different characters before doing another 4 "replaceAll()"s. So this runs slightly faster than mine. Good job!

clever yet simple idea!

Very cool!
I prefer to convert the argument to lowercase before doing the checks because the code gets leaner. But this way works too, congrats.