Use any birthdates

Suppose that people enter an empty room until a pair of people share a birthday. On average, how many people will have to enter before there is a match? Write a program BirthdayCoincidence.java to simulate one experiment. The output of this program is the number of people that were added until a pair had matching birthdays. Then write a program BirthdayCoincidenceAverage.java to repeat the experiment many times and estimate the average value. The number of trials to repeat the experiment should be specified via a command-line argument. Try it with several very large numbers of trials. The output of this program is the average number of people that were added until a birthday match occurred. Assume birthdays to be uniform random integers between 1 and 365