Challenge: Use a delimited string to create a PhoneList class with an instance method to
Insert names and phone numbers, and a method to look up a phone number when a user
Provides a person's name. Since your class will take care of looking things up, you don't
Have to worry about keeping the list in alphabetical order. For example, the following
String could be used as such a directory:
Mom:8601929876::
Bill g:65409871234::
Mary
Lancelot:1238421100

Now matter how many pretties, we don't do the whole problem for you. You do it and show us where you got stuck.