script_6.js

const codonMap = {
  // Serine
  UCU: 'Serine', UCC: 'Serine', UCA: 'Serine', UCG: 'Serine', AGU: 'Serine', AGC: 'Serine',
  // Proline
  CCU: 'Proline', CCC: 'Proline', CCA: 'Proline', CCG: 'Proline',
  // Leucine
  UUA: 'Leucine', UUG: 'Leucine',
  // Phenylalanine
  UUU: 'Phenylalanine', UUC: 'Phenylalanine',
  // Arginine
  CGU: 'Arginine', CGC: 'Arginine', CGA: 'Arginine', CGG: 'Arginine', AGA: 'Arginine', AGG: 'Arginine',
  // Tyrosine
  UAU: 'Tyrosine', UAC: 'Tyrosine'
};

function translateRNA(rna) {
  const codons = rna.match(/.{1,3}/g) || [];
  const aminoAcids = codons.map(cd => codonMap[cd] || 'Unknown');
  return aminoAcids.join('-') + '.';
}

// Example from the prompt: UUACGCAGUAGA -> UUA-CGC-AGU-AGA -> Leucine-Arginine-Serine-Arginine.
const example = "UUACGCAGUAGA";
console.log(`${example} -> ${translateRNA(example)}`);

// RNAs to translate:
const rna1 = "CCGUCGUUGCGCUACAGC";
const rna2 = "CCUCGCCGGUACUUCUCG";

console.log(`${rna1} -> ${translateRNA(rna1)}`);
console.log(`${rna2} -> ${translateRNA(rna2)}`);