Maximum Length Difference.js

// You are given two arrays a1 and a2 of strings. Each string is composed with letters from a to z. Let x be any string in the first array and y be any string in the second array.

// Find max(abs(length(x) − length(y)))

// If a1 and/or a2 are empty return -1 in each language except in Haskell (F#) where you will return Nothing (None).

// #Example:

// a1 = ["hoqq", "bbllkw", "oox", "ejjuyyy", "plmiis", "xxxzgpsssa", "xxwwkktt", "znnnnfqknaz", "qqquuhii", "dvvvwz"]
// a2 = ["cccooommaaqqoxii", "gggqaffhhh", "tttoowwwmmww"]
// mxdiflg(a1, a2) --> 13

function mxdiflg(a1, a2) {
  if (a1.length < 1 || a2.length < 1) return -1

  const a1Max = Math.max(...a1.map((s) => s.length))
  const a1Min = Math.min(...a1.map((s) => s.length))
  const a2Max = Math.max(...a2.map((s) => s.length))
  const a2Min = Math.min(...a2.map((s) => s.length))

  return Math.abs(a1Max - a2Min) > Math.abs(a2Max - a1Min)
    ? Math.abs(a1Max - a2Min)
    : Math.abs(a2Max - a1Min)
}

var s1 = [
  'hoqq',
  'bbllkw',
  'oox',
  'ejjuyyy',
  'plmiis',
  'xxxzgpsssa',
  'xxwwkktt',
  'znnnnfqknaz',
  'qqquuhii',
  'dvvvwz',
]
var s2 = ['cccooommaaqqoxii', 'gggqaffhhh', 'tttoowwwmmww']
console.log(mxdiflg(s1, s2), 13)