How to replace multiple occurrences in single pass?

Question

I have the following string:

abc
def
abc
xyz
pop
mmm
091
abc

I need to replace all occurrences of abc with the ones from array ["123", "456", "789"] so the final string will look like this:

123
def
456
xyz
pop
mmm
091
789

I would like to do it without iteration, with just single expression. How can I do it?

Answer 1

Here is a "single expression version":

edit: Delegate instead of Lambda for 3.5

string[] replaces =  {"123","456","789"};
Regex regEx = new Regex("abc");
int index = 0;
string result = regEx.Replace(input, delegate(Match match) { return replaces[index++];} ); 

Test it here