util/Collections/FindSubList.java

/*
 * Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 4323074
 * @summary Basic test for Collections.indexOfSubList/lastIndexOfSubList
 */

import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.Vector;

public class FindSubList {
    public static void main(String[] args) throws Exception {
        int N = 500;
        List source = new ArrayList(3 * N);
        List[] target = new List[N+1];
        int[] index = new int[N+1];
        for (int i=0; i<=N; i++) {
            List t = new ArrayList();
            String s = Integer.toString(i, 2);
            for (int j=0, len = s.length(); j<len; j++)
                t.add(s.charAt(j)=='1' ? "1" : "0");
            target[i] = t;
            if (i == N) {
                index[i] = -1;
            } else {
                index[i] = source.size();
                source.addAll(t);
                source.add("*");
            }
        }

        List[] src = {
            source,
            new LinkedList(source),
            new Vector(source),
            Arrays.asList(source.toArray())
        };
        for (int j=0; j<src.length; j++) {
            List s = src[j];

            for (int i=0; i<=N; i++) {
                int idx = Collections.indexOfSubList(s, target[i]);
                if (idx != index[i])
                    throw new Exception(s.getClass()+" indexOfSubList: " + i +
                                        "is " + idx + ", should be "+index[i]);
            }

            if (Collections.indexOfSubList(s,Collections.nCopies(2*s.size(),
                                                                 "0")) != -1)
               throw new Exception(s.getClass()+" indexOfSubList: big target");

        }

        Collections.reverse(source);
        int srcSize = source.size();
        for (int i=0; i<=N; i++) {
            Collections.reverse(target[i]);
            if (i != N)
                index[i] = srcSize - index[i] - target[i].size();
        }
        List[] src2 = {
            source,
            new LinkedList(source),
            new Vector(source),
            Arrays.asList(source.toArray())
        };
        for (int j=0; j<src2.length; j++) {
            List s = src2[j];

            for (int i=0; i<=N; i++) {
                int idx = Collections.lastIndexOfSubList(s, target[i]);
                if (idx != index[i])
                    throw new Exception(s.getClass()+" lastIdexOfSubList: "+i +
                                        "is " + idx + ", should be "+index[i]);
            }
            if (Collections.indexOfSubList(s,Collections.nCopies(2*s.size(),
                                                                 "0")) != -1)
              throw new Exception(s.getClass()+" lastIndexOfSubList: big tgt");
        }
    }
}
Revision:	1.5
Committed:	Mon Jan 8 03:12:03 2018 UTC (6 years, 4 months ago) by jsr166
Branch:	MAIN
CVS Tags:	HEAD
Changes since 1.4:	+6 -1 lines
Log Message:	organize imports
#	User	Rev	Content
1	jsr166	1.1	/*
2	jsr166	1.2	* Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved.
3	jsr166	1.1	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4			*
5			* This code is free software; you can redistribute it and/or modify it
6			* under the terms of the GNU General Public License version 2 only, as
7			* published by the Free Software Foundation.
8			*
9			* This code is distributed in the hope that it will be useful, but WITHOUT
10			* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11			* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12			* version 2 for more details (a copy is included in the LICENSE file that
13			* accompanied this code).
14			*
15			* You should have received a copy of the GNU General Public License version
16			* 2 along with this work; if not, write to the Free Software Foundation,
17			* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18			*
19	jsr166	1.2	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20			* or visit www.oracle.com if you need additional information or have any
21			* questions.
22	jsr166	1.1	*/
23
24	jsr166	1.3	/*
25	jsr166	1.1	* @test
26			* @bug 4323074
27			* @summary Basic test for Collections.indexOfSubList/lastIndexOfSubList
28			*/
29
30	jsr166	1.5	import java.util.ArrayList;
31			import java.util.Arrays;
32			import java.util.Collections;
33			import java.util.LinkedList;
34			import java.util.List;
35			import java.util.Vector;
36	jsr166	1.1
37			public class FindSubList {
38			public static void main(String[] args) throws Exception {
39			int N = 500;
40			List source = new ArrayList(3 * N);
41	jsr166	1.4	List[] target = new List[N+1];
42			int[] index = new int[N+1];
43	jsr166	1.1	for (int i=0; i<=N; i++) {
44			List t = new ArrayList();
45			String s = Integer.toString(i, 2);
46			for (int j=0, len = s.length(); j<len; j++)
47			t.add(s.charAt(j)=='1' ? "1" : "0");
48			target[i] = t;
49			if (i == N) {
50			index[i] = -1;
51			} else {
52			index[i] = source.size();
53			source.addAll(t);
54			source.add("*");
55			}
56			}
57
58	jsr166	1.4	List[] src = {
59			source,
60			new LinkedList(source),
61			new Vector(source),
62			Arrays.asList(source.toArray())
63			};
64	jsr166	1.1	for (int j=0; j<src.length; j++) {
65			List s = src[j];
66
67			for (int i=0; i<=N; i++) {
68			int idx = Collections.indexOfSubList(s, target[i]);
69			if (idx != index[i])
70			throw new Exception(s.getClass()+" indexOfSubList: " + i +
71			"is " + idx + ", should be "+index[i]);
72			}
73
74			if (Collections.indexOfSubList(s,Collections.nCopies(2*s.size(),
75			"0")) != -1)
76			throw new Exception(s.getClass()+" indexOfSubList: big target");
77
78			}
79
80			Collections.reverse(source);
81			int srcSize = source.size();
82			for (int i=0; i<=N; i++) {
83			Collections.reverse(target[i]);
84			if (i != N)
85			index[i] = srcSize - index[i] - target[i].size();
86			}
87	jsr166	1.4	List[] src2 = {
88			source,
89			new LinkedList(source),
90			new Vector(source),
91			Arrays.asList(source.toArray())
92			};
93	jsr166	1.1	for (int j=0; j<src2.length; j++) {
94			List s = src2[j];
95
96			for (int i=0; i<=N; i++) {
97			int idx = Collections.lastIndexOfSubList(s, target[i]);
98			if (idx != index[i])
99			throw new Exception(s.getClass()+" lastIdexOfSubList: "+i +
100			"is " + idx + ", should be "+index[i]);
101			}
102			if (Collections.indexOfSubList(s,Collections.nCopies(2*s.size(),
103			"0")) != -1)
104			throw new Exception(s.getClass()+" lastIndexOfSubList: big tgt");
105			}
106			}
107			}