no carry

gistfile1.txt

const noCarry = (val1, val2) => {
  val1 = val1.toString().split('').map(x => parseInt(x))
  val2 = val2.toString().split('').map(x => parseInt(x))
  
  
  const f = (arr1, arr2) => {
  const a = arr1.length > arr2.length ? arr1 : arr2;
  const b = arr1.length > arr2.length ? arr2 : arr1;
  let result = []
  
  a.reverse().forEach((e, i) => {
    const aux = b.length - 1;
    
    result[i] = e + (b[aux - i] ? b[aux - i] : 0);
  })
  
  
  return result.reverse()
}

const solution = f(val1, val2).map(x => x.toString()).reduce((sum, val) => sum + +val)

return solution
}