RemoveDuplicatesArrayListTest

import junit.framework.TestCase;

import java.util.*;
import java.util.stream.Collectors;

public class RemoveDuplicatesArrayListTest extends TestCase {

    public void test() {
        final String[] values = {   // from http://people.howstuffworks.com/14-pangrams.htm
                "sphinx",
                "of",
                "black",
                "quartz",
                "judge",
                "my",
                "vow",

                "two",
                "driven",
                "jocks",
                "help",
                "fax",
                "my",
                "big",
                "quiz",

                "five",
                "quacking",
                "zephyrs",
                "jolt",
                "my",
                "wax",
                "bed",

                "the",
                "five",
                "boxing",
                "wizards",
                "jump",
                "quickly",

                "pack",
                "my",
                "box",
                "with",
                "five",
                "dozen",
                "liquor",
                "jugs",

                "the",
                "quick",
                "brown",
                "fox",
                "jumps",
                "over",
                "the",
                "lazy",
                "dog",

                "jinxed",
                "wizards",
                "pluck",
                "ivy",
                "from",
                "the",
                "big",
                "quilt",

                "crazy",
                "fredrick",
                "bought",
                "many",
                "very",
                "exquisite",
                "opal",
                "jewels",

                "we",
                "promptly",
                "judged",
                "antique",
                "ivory",
                "buckles",
                "for",
                "the",
                "next",
                "prize",

                "a",
                "mad",
                "boxer",
                "shot",
                "a",
                "quick",
                "gloved",
                "jab",
                "to",
                "the",
                "jaw",
                "of",
                "his",
                "dizzy",
                "opponent",

                "jaded",
                "zombies",
                "acted",
                "quaintly",
                "but",
                "kept",
                "driving",
                "their",
                "oxen",
                "forward",

                "the",
                "job",
                "requires",
                "extra",
                "pluck",
                "and",
                "zeal",
                "from",
                "every",
                "young",
                "wage",
                "earner"
        };

        final ArrayList<String> inputArrayList = Arrays.stream(values).collect(Collectors.toCollection(ArrayList::new));

        System.out.println("inputArrayList = " + inputArrayList.toString());
        System.out.println("inputArrayList.size() = " + inputArrayList.size());

        final LinkedHashSet<String> resultSet = inputArrayList.stream().collect(Collectors.toCollection(LinkedHashSet::new));

        System.out.println("resultSet = " + resultSet.toString());
        System.out.println("resultSet.size() = " + resultSet.size());

        final ArrayList<String> outputArrayList = resultSet.stream().collect(Collectors.toCollection(ArrayList::new));

        System.out.println("outputArrayList = " + outputArrayList.toString());
        System.out.println("outputArrayList.size() = " + outputArrayList.size());

        final Iterator<String> inputIterator  = inputArrayList.iterator();
        final Iterator<String> resultIterator = resultSet.iterator();
        final Iterator<String> outputIterator = outputArrayList.iterator();

        String input  = inputIterator.next();
        String result = resultIterator.next();
        String output = outputIterator.next();
        while (inputIterator.hasNext()) {
            assertEquals(result, output);
            if (input.equals(output)) {
                System.out.println(input);
                result = resultIterator.next();
                output = outputIterator.next();
            } else {
                System.out.println(input + " -- dup!");
            }
            input = inputIterator.next();
        }
    }

}