marnagas.js

// Sort the strings alphabetically, then sort the strings by length
// Naively compare each string to the others and try to find anagrams.
function hasAnagram(strings) {
  const sorted = strings.map(s => s.split("").sort().join("")).sort();
  return sorted.some((s, i) => {
    const sliced = sorted.slice(0, i).concat(sorted.slice(i+1));
    return sliced.find(s2 => s == s2);
  });
}