Write a program that prompts the user to enter cities and end when done write a loop that prints out the first letter for each city. You must use a loop for this program SAMPLE RUN #1: java Firstlettercities Enter a city (end when done): Dallas Enter a city (end when done): San Joser Enter a city (end when done): Austin Enter a city (end when done): end- The first letter of each city is: D A SAMPLE RUN #2: java FirstLettercities Enter a city (end when done): Chicago Enter a city (end when done): Los Angeles- Enter a city (end when done): Atlanta Enter a city (end when done): Dallas- Enter a city (end when done): San Jose Enter a city (end when done): end- The first letter of each city is: