数组算法 2

 /*
  * 输入两个非负整数，以数组形式反向排序显示，相加并返回新的数组
  * Input: (2 -> 4 -> 3) + (5 -> 6 -> 4)
  * Output: 7 -> 0 -> 8
  */
 

var addtwonumbers = function( list1, list2 ){
  var resultNumberList = []
  newList1 = list1.reverse().join('')
  newList2 = list2.reverse().join('')
  addNumber = parseInt(newList1)+ parseInt(newList2)
  addString = addNumber.toString()
  for( var i = 0; i < addString.length; i ++ ){
    resultNumberList.push( parseInt(addString[i]) )
  }
  return resultNumberList.reverse()
}