You have collected a file of movie ratings where each movie is rated from

1 (bad) to 5 (excellent). The first line of the file is a number that identifies

how many ratings are in the file. Each rating then consists of two lines:

the name of the movie followed by the numeric rating from 1 to 5. Here is

a sample rating file with four unique movies and seven ratings:

7

Harry Potter and the Order of the Phoenix

4

Harry Potter and the Order of the Phoenix

5

The Bourne Ultimatum

3

Harry Potter and the Order of the Phoenix

4

The Bourne Ultimatum

4

Wall-E

4

Glitter

1

Write a program that reads a file in this format, calculates the average

rating for each movie, and outputs the average along with the number of

reviews. Here is the desired output for the sample data:

Glitter: 1 review, average of 1 / 5

Harry Potter and the Order of the Phoenix: 3 reviews, average

of 4.3 / 5

The Bourne Ultimatum: 2 reviews, average of 3.5 / 5

Wall-E: 1 review, average of 4 / 5

Use a map or multiple maps to calculate the output. Your map(s) should

index from a string representing each movie’s name to integers that store

the number of reviews for the movie and the sum of the ratings for the

movie.