Given an ArrayList of Strings, return a new List of Strings where each element contains the first character of the same-index input String.

Precondition: every element of lst will have length > 0.

FYI

The data type of the output is List<String> just because CodingBat does not allow the creation of methods with a return type of ArrayList<String>. Because an ArrayList is-a List, you can safely pretend that the return type is ArrayList<String> instead of trying to create something called a List. The AP CSA curriculum used to require that students know what a List is (an interface), but no longer requires that knowledge.

HINT

You will need a loop for this. Also remember to declare and instantiate (and return) a new ArrayList.