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 die movie followed by the numeric rating from 1 to 5. Flere 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 die 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 die movie.
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