vicsstar

// flames.js
// FLAMES game. Algorithm can be found here: http://flamesgame.appspot.com/algorithm

const getFlame = (name1, name2) =>
  name1.toLowerCase().split('').                                                      // take all characters in "name1", to compare
  filter(c => name2.toLowerCase().includes(c)).                                       // keep only characters (in "name1") also found in "name2"
  reduce((result, c) => [
    result[0].replace(new RegExp(`${c}`, 'g'), ''),                                   // replace common characters in "name1"
    result[1].replace(new RegExp(`${c}`, 'g'), '')                                    // replace common characters in "name2"
  ], [name1.toLowerCase(), name2.toLowerCase()]).