# Reverse Number Function

**URL:** <https://forum.kirupa.com/t/reverse-number-function/251403>\
**Category:** open source\
**Created:** [February 8, 2008, 2:11am UTC](https://forum.kirupa.com/t/reverse-number-function/251403 "2008-02-08T02:11:34Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![McGuffin](https://yyz1.discourse-cdn.com/flex011/user_avatar/forum.kirupa.com/mcguffin/32/408_2.png) [@McGuffin](https://forum.kirupa.com/u/McGuffin)\
**Post date:** [February 8, 2008, 2:11am UTC](https://forum.kirupa.com/t/reverse-number-function/251403/1 "2008-02-08T02:11:34Z")

</div>

```auto

function PrintReverse(i:Number, r:Number = 0):Number {
	trace(i+" : "+r);
	return (i<1) ? r : PrintReverse((i-i%10)/10, Math.floor(r*10+(i%10)));
}

trace("output: "+PrintReverse(123456789));

/* OUTPUT
123456789 : 0
12345678 : 9
1234567 : 98
123456 : 987
12345 : 9876
1234 : 98765
123 : 987654
12 : 9876543
1 : 98765432
0 : 987654321
output: 987654321
*/

```

Quick code… should work in AS2 or AS3 (using the Number datatype above or using int). If you feed it a decimal, it’ll only output the reversed integer part, it discards the fractional part (ie. put in 12345.6789 and it’ll output 54321).