trunk/tools/utils4lh.java

package tools;

import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.Iterator;

public class utils4lh {

    private utils4lh() {}

    public static LinkedHashMap reverse(LinkedHashMap lhm) {

        LinkedHashMap rvLhm = new LinkedHashMap();
        
        Object[] a = lhm.keySet().toArray();
        
        for (int i = a.length-1; i > -1; i--) {
            rvLhm.put(a[i], lhm.get(a[i]));
            
        }
        
        return rvLhm;
    
    }

    public static LinkedHashMap putKeyFirst(LinkedHashMap lhm, Object key) {
        
        LinkedHashMap oldLhm = (LinkedHashMap)lhm.clone();
        LinkedHashMap newLhm = new LinkedHashMap();

        newLhm.put(key, oldLhm.get(key));
        oldLhm.remove(key);
        newLhm.putAll(oldLhm);

        return newLhm;

    }

    public static LinkedHashSet linkedHashSetDiff(LinkedHashSet a, LinkedHashSet b) {

        Object obj;
        LinkedHashSet a_b = new LinkedHashSet();
        LinkedHashSet ab = new LinkedHashSet();
        LinkedHashSet all = new LinkedHashSet();

        for (Iterator aItr = a.iterator(); aItr.hasNext();) {
            obj = aItr.next();
            if (b.contains(obj)) {
                b.remove(obj);
                ab.add(obj);
            } else {
                a_b.add(obj);
            }
        }

        all.add(a_b);
        all.add(ab);
        all.add(b);
        
        return all;

    }

}
Revision:	14
Committed:	Mon Mar 6 08:05:31 2006 UTC (18 years, 6 months ago) by stehr
File size:	1186 byte(s)
Log Message:	removed ununsed imports and variables
Line	User	Rev	File contents
1	duarte	7	package tools;
2
3			import java.util.LinkedHashMap;
4			import java.util.LinkedHashSet;
5			import java.util.Iterator;
6
7			public class utils4lh {
8
9			private utils4lh() {}
10
11			public static LinkedHashMap reverse(LinkedHashMap lhm) {
12
13			LinkedHashMap rvLhm = new LinkedHashMap();
14
15			Object[] a = lhm.keySet().toArray();
16
17			for (int i = a.length-1; i > -1; i--) {
18			rvLhm.put(a[i], lhm.get(a[i]));
19
20			}
21
22			return rvLhm;
23
24			}
25
26			public static LinkedHashMap putKeyFirst(LinkedHashMap lhm, Object key) {
27
28			LinkedHashMap oldLhm = (LinkedHashMap)lhm.clone();
29			LinkedHashMap newLhm = new LinkedHashMap();
30
31			newLhm.put(key, oldLhm.get(key));
32			oldLhm.remove(key);
33			newLhm.putAll(oldLhm);
34
35			return newLhm;
36
37			}
38
39			public static LinkedHashSet linkedHashSetDiff(LinkedHashSet a, LinkedHashSet b) {
40
41			Object obj;
42			LinkedHashSet a_b = new LinkedHashSet();
43			LinkedHashSet ab = new LinkedHashSet();
44			LinkedHashSet all = new LinkedHashSet();
45
46			for (Iterator aItr = a.iterator(); aItr.hasNext();) {
47			obj = aItr.next();
48			if (b.contains(obj)) {
49			b.remove(obj);
50			ab.add(obj);
51			} else {
52			a_b.add(obj);
53			}
54			}
55
56			all.add(a_b);
57			all.add(ab);
58			all.add(b);
59
60			return all;
61
62			}
63
64			}