Catching Car Mileage Numbers | Codewars

isInteresting.js

function isInteresting(number, awesomePhrases = []) {
  const str = number.toString(),
    isZeros = (num) => /^[1-9](0+)$/.test(num),
    isPalindrome = (num) => num.split('').reverse().join('') === num,
    isAweP = (num) => awesomePhrases.includes(num),
    isSeqInc = (num) =>
      RegExp(`${num.length >= 2 ? num : 'a'}`).test('1234567890'),
    isSeqDec = (num) =>
      RegExp(`${num.length >= 2 ? num : 'a'}`).test('9876543210'),
    isClose = (num) => {
      const test = 5
      const minNum = number - 2
      for (let i = 0; i < awesomePhrases.length; i++) {
        const phrase = awesomePhrases[i]
        if (num >= phrase - 2 && num <= phrase + 2) {
          return true
        }
      }
      for (let i = 0; i < test; i++) {
        const next = minNum + i
        const nextStr = (minNum + i).toString()
        if (
          isZeros(nextStr) ||
          isPalindrome(nextStr) ||
          isSeqDec(nextStr) ||
          isSeqInc(nextStr) ||
          isAweP(next)
        ) {
          return true
        }
      }
      return false
    }
  if (
    number > 100 &&
    (isZeros(str) ||
      isPalindrome(str) ||
      isSeqDec(str) ||
      isSeqInc(str) ||
      isAweP(number))
  ) {
    return 2
  } else if (number > 97 && isClose(number)) {
    return 1
  }
  return 0
}