Tell us what’s happening:
I made a an object DNA and then I simply inserted the corresponding pair that match the argument is it valid although i passed the test?
Your code so far
function pairElement(str) {
const DNA = {"A":["A","T"],"T":["T","A"],"G":["G","C"],"C":["C","G"]};
let keys = Object.keys(DNA);
let rs = str.split("")
let arr =[];
let rr = rs.map(a=>{
for (var i in keys){
if (a === keys[i]){
return arr.push(DNA[keys[i]])
}
}
})
return arr
}
pairElement("ATCGA")
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36
.
Link to the challenge:
https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/dna-pairing