Examples with Trie org.trie4j.Trie used on opensource projects

Example 11 with Trie

use of org.trie4j.Trie in project trie4j by takawitter.

the class BitVectorExp method main.

public static void main(String[] args) throws Exception {
    Trie trie = new PatriciaTrie();
    int c = 0;
    // You can download archive from http://dumps.wikimedia.org/jawiki/latest/
    LapTimer t = new LapTimer();
    for (String word : new WikipediaTitles()) {
        trie.insert(word);
        c++;
        if (c == maxCount)
            break;
    }
    t.lapMillis("trie building done. %d words.", c);
    final BytesSuccinctBitVector bv = new BytesSuccinctBitVector(5000000);
    final AtomicInteger nodeCount = new AtomicInteger();
    Algorithms.traverseByDepth(trie.getRoot(), new NodeVisitor() {

        @Override
        public boolean visit(Node node, int nest) {
            Node[] children = node.getChildren();
            if (children != null) {
                int n = node.getChildren().length;
                for (int i = 0; i < n; i++) {
                    bv.append(true);
                }
            }
            bv.append(false);
            nodeCount.incrementAndGet();
            return true;
        }
    });
    trie = null;
    t.lapMillis("done. %d nodes inserted. do rank and select", nodeCount.intValue());
    for (int i = 0; i < c; i += 100) {
        int count = bv.rank(i, true);
        bv.select(count, true);
    }
    t.lapMillis("done.");
    Thread.sleep(10000);
}

Example 12 with Trie

use of org.trie4j.Trie in project trie4j by takawitter.

the class Issue_031 method test_UnsafeDoubleArray.

@Test
public void test_UnsafeDoubleArray() throws Throwable {
    Trie trie = new PatriciaTrie();
    insertLines(trie, FILE_NAME);
    @SuppressWarnings("deprecation") Trie da = new org.trie4j.doublearray.UnsafeDoubleArray(trie);
    Assert.assertFalse(trie.contains("you"));
    Assert.assertFalse(da.contains("you"));
}

Example 13 with Trie

use of org.trie4j.Trie in project trie4j by takawitter.

the class LOUDSTrieTest method test_save_load.

@Test
public void test_save_load() throws Exception {
    String[] words = { "こんにちは", "さようなら", "おはよう", "おおきなかぶ", "おおやまざき" };
    Trie lt = trieWithWords(words);
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    ObjectOutputStream oos = new ObjectOutputStream(baos);
    try {
        oos.writeObject(lt);
    } finally {
        oos.flush();
    }
    lt = (Trie) new ObjectInputStream(new ByteArrayInputStream(baos.toByteArray())).readObject();
    for (String w : words) {
        Assert.assertTrue(lt.contains(w));
    }
    Assert.assertFalse(lt.contains("おやすみなさい"));
    StringBuilder b = new StringBuilder();
    Node[] children = lt.getRoot().getChildren();
    for (Node n : children) {
        char[] letters = n.getLetters();
        b.append(letters[0]);
    }
    Assert.assertEquals("おこさ", b.toString());
}

Example 14 with Trie

use of org.trie4j.Trie in project trie4j by takawitter.

the class LOUDSTrieTest method test.

@Test
public void test() throws Exception {
    String[] words = { "こんにちは", "さようなら", "おはよう", "おおきなかぶ", "おおやまざき" };
    Trie lt = trieWithWords(words);
    for (String w : words) {
        Assert.assertTrue(w, lt.contains(w));
    }
    Assert.assertFalse(lt.contains("おやすみなさい"));
    StringBuilder b = new StringBuilder();
    Node[] children = lt.getRoot().getChildren();
    for (Node n : children) {
        char[] letters = n.getLetters();
        b.append(letters[0]);
    }
    Assert.assertEquals("おこさ", b.toString());
}

Example 15 with Trie

use of org.trie4j.Trie in project trie4j by takawitter.

the class LongsConstantTimeSelect0TailLOUDSPPTrieWithSuffixTrieDenseTailArrayWikipediaSerializeTest method secondTrie.

@Override
protected Trie secondTrie(Trie firstTrie) {
    Trie t = new TailLOUDSTrie(firstTrie, new LOUDSPPBvTree(new LongsRank0OnlySuccinctBitVector(), new LongsConstantTimeSelect0SuccinctBitVector()), new SuffixTrieDenseTailArrayBuilder());
    t.trimToSize();
    return t;
}