July 2017
Beginner to intermediate
715 pages
17h 3m
English
Content preview from Java: Data Science Made Easy
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Subsetting data
It is not always practical or desirable to work with an entire set of data. In these cases, we may want to retrieve a subset of data to either work with or remove entirely from the dataset. There are a few ways of doing this supported by the standard Java libraries. First, we will use the subSet method of the SortedSet interface. We will begin by storing a list of numbers in a TreeSet. We then create a new TreeSet object to hold the subset retrieved from the list. Next, we print out our original list:
Integer[] nums = {12, 46, 52, 34, 87, 123, 14, 44}; TreeSet<Integer> fullNumsList = new TreeSet<Integer>(new ArrayList<>(Arrays.asList(nums))); SortedSet<Integer> partNumsList; out.println("Original List: " + fullNumsList.toString() ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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