DNA Pairing Challenge

Tell us what’s happening:
Please, Can anyone explain me please what is the main purpose ? how to make these pairs ?

Your code so far

function pairElement(str) {
  return str;


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Link to the challenge:

IN DNA, A pair with T,G with C and vice-versa.
So, if input is "GCG"
you have to return an array [[“G”,“C”],[“C”,“G”],[“G”,“C”]]

To do it

Take a single character of the given string
and match it using any loop and if or switch case etc.
for (loop until the given string length)
Take each character and check
If (this)

If (this)


U can use switch in place of if …then
plus there are other ways to do it.
Try it first …if not will help with more.

1 Like

Thanks buddy it has work !