DNA Pairing: correct in console, but isn't passing tests?

Curriculum Help
1

Can you help me understand why my code is giving the correct output to the console but not in fCC?

function pairElement(str) {
  let gene = [];

  str.split("").map((letter) => {
    switch (letter) {
      case "A": 
        gene.push(["A, T"]);
        break;
      case "T": 
        gene.push(["T, A"]);
        break;
      case "G": 
        gene.push(["G, C"]);
        break;
      case "C": 
        gene.push(["C, G"]);
        break;
    }
  });
  return gene;
}

console.log(pairElement("GCG"));

thanks for any and all thoughts!

2

It is not correct in the console. You are supposed to be pushing arrays with two elements each time. Instead you are pushing single string elements which look like ā€œC, Gā€.

The first test case should look like:

[ [ 'A', 'T' ], [ 'T', 'A' ], [ 'C', 'G' ], [ 'G', 'C' ], [ 'A', 'T' ] ]

but your solution returns:

[ [ 'A, T' ], [ 'T, A' ], [ 'C, G' ], [ 'G, C' ], [ 'A, T' ] ]
3

:woman_facepalming: once again you come to the rescue. thanks, Randell :slight_smile: