Number (0-100) to String

Question

I could not find the thread, but remember about a week ago that someone had asked about turning a given number in the range 0-100 into its string equivalent.
Here's a little class that does it. Hope it helps...
package
    public class NumberToText    {
        private var numStrings:Array;
        private var tenStrings:Array;   
        public function NumberToText()
            numStrings = new Array();
            tenStrings = new Array();
            numStrings.push("Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen");           
            tenStrings.push("Twenty", "Thirty", "Fourty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety", "One Hundred");
        public function numToString(num:int):String
            if (num < 20) {               
                return numStrings[num];
            var tensPlace:int = 0;
            var cur:int = num;
            while (cur >= 10) {
                cur -= 10;
                tensPlace++;
            var rem:int = num - (10 * tensPlace);
            var tens:String = tenStrings[tensPlace - 2];
            if (rem == 0) {
                 return tens;   
            }else {
                 return tens + " " + numStrings[rem];   
            return "null";

Answer 1

Nice.
But I think the code below is more compact and efficient - it uses math only and no loops:
package
     public class NumberToText {
          private var numStrings:Array = ["Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen"];
          private var tenStrings:Array = ["Twenty", "Thirty", "Fourty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety", "One Hundred"];  
          public function NumberToText()
          public function numToString(num:int):String
               if (num < 20) {              
                    return numStrings[num];
               else if (num <= 100){
                    return  tenStrings[int(num / 10) - 2] + " " + (num % 10 > 0 ? numStrings[num % 10] : "");
               else {
                    return "null";
Also, as a utility, it can use Math.method notation - static function:
package
     public class NumberToText {
          public function NumberToText()
          public static function numToString(num:int):String
               var numStrings:Array = ["Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen"];
               var tenStrings:Array = ["Twenty", "Thirty", "Fourty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety", "One Hundred"];
               if (num < 20) {              
                    return numStrings[num];
               else if (num <= 100){
                    return  tenStrings[int(num / 10) - 2] + " " + (num % 10 > 0 ? numStrings[num % 10] : "");
               else {
                    return "null";
So, usage will be:
var numString:String = NumberToText.numToString(89);
Or, perhaps, it can be written as package level function, similar to navigateToURL with usage:
var  numString:String = numToString(89);
package 
     public function numToString(num:int):String
          var numStrings:Array = ["Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine", "Ten", "Eleven", "Twelve", "Thirteen", "Fourteen", "Fifteen", "Sixteen", "Seventeen", "Eighteen", "Nineteen"];
          var tenStrings:Array = ["Twenty", "Thirty", "Fourty", "Fifty", "Sixty", "Seventy", "Eighty", "Ninety", "One Hundred"];
          if (num < 20) {              
               return numStrings[num];
          else if (num <= 100){
               return  tenStrings[int(num / 10) - 2] + " " + (num % 10 > 0 ? numStrings[num % 10] : "");
          else {
               return "null";