how do i justify text with math

I need to write an algorithm that will full jusity a number of text links along a line in action script.  i can read any programming language so information in any language is appreciated.

The idea is this:

if therer are 5 links of various sizes that are situated on a menu that can be 600 pixels wide, i need  to center then and adjust the spaces between each item such that the fill the available horizontal area.  Dont worry about what happens if they over fill the available space.
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EdaniskoAsked:
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jhshuklaCommented:
>> text links along a line in action script
AFAIK, action script has something to do with flash. So why in C??

that aside, here are the things you will need:
(1) some sort of graphics object or class that can give you dimensions of a given text string.
(2) the fonts (+ size, bold/italics decoration)
(3) the actual text you want to display

use the above three to get the sizes of links and add them to get total size : call it total_size
(600 - total_size)/(num_items - 1) = spacing you need between two links

We will need more info on what environment you are developing in to write pseudo code.
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EdaniskoAuthor Commented:
Yes.

there here it is in AS3
for(var i:int=0; i<=_NavItems.length-1;i++){
	if (i==0){
		_NavItems[i].x = 0;
	} else {
		_NavItems[i].x =amountOfSpaceBetweenLinks + _NavItems[i-1].x + _NavItems[i-1].width;
	}
	_NavItems[i].visible=true;
	
}

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