36 lines
944 B
Java
36 lines
944 B
Java
package set;
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import java.util.*;
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/**
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* This program uses a set to print all unique words in System.in.
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* @version 1.12 2015-06-21
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* @author Cay Horstmann
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*/
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public class SetTest
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{
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public static void main(String[] args)
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{
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Set<String> words = new HashSet<>(); // HashSet implements Set
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long totalTime = 0;
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try (Scanner in = new Scanner(System.in))
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{
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while (in.hasNext())
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{
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String word = in.next();
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long callTime = System.currentTimeMillis();
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words.add(word);
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callTime = System.currentTimeMillis() - callTime;
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totalTime += callTime;
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}
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}
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Iterator<String> iter = words.iterator();
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for (int i = 1; i <= 20 && iter.hasNext(); i++)
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System.out.println(iter.next());
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System.out.println(". . .");
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System.out.println(words.size() + " distinct words. " + totalTime + " milliseconds.");
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}
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}
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