if (e == null) {
 throw exception();
}
else 
{
 array myArray = new Array(capacity);
 
 foreach (Child child in allaChildren) {
 	myArray.Add(child);
 }
 
 int lowestChild;
 
 foreach (int number in myArray) {
 	if (number > lowestChild)
    	lowestChild = number;
 }
}