How do I remove Items in an array?

[code_with_marley]

Ok, so the netTogether function puts variables together:

String netTogether(int n1, int n2) {
  String MainNet = "";   
  MainNet += n1;   
  MainNet += "#";  
  MainNet += n2;   
  return MainNet; 
}

and the unNet function takes that net (e.g. "1#4#2000") and takes it apart