2013年AP计算机科学A简答题真题+答案+PDF下载

COMPUTER SCIENCE A

SECTION II

Time—1 hour and 45 minutes

Number of questions—4

Percent of total score—50

Directions: SHOW ALL YOUR WORK. REMEMBER THAT PROGRAM SEGMENTS ARE TO BE WRITTEN IN JAVA.

1. A music Web site keeps track of downloaded music. For each download, the site uses a DownloadInfo object to store a song's title and the number of times it has been downloaded. A partial declaration for the DownloadInfo class is shown below.

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