Java Map Reverse sort(Map source, boolean reverse)

Description

sort

License

Apache License

Declaration

static public Map<String, Object> sort(Map<String, Object> source, boolean reverse) 

Method Source Code

//package com.java2s;
/*/*from   ww w . jav  a 2s.  c  om*/
 * Copyright 2012 ReachLocal Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.util.*;

public class Main {
    static public Map<String, Object> sort(Map<String, Object> source, boolean reverse) {
        Map<String, Object> result = new LinkedHashMap<String, Object>();
        List<String> keys = new ArrayList<String>(source.keySet());
        Collections.sort(keys);
        if (reverse) {
            Collections.reverse(keys);
        }
        for (String key : keys) {
            result.put(key, source.get(key));
        }
        return result;
    }

    static public Map<String, Object> reverse(Map<String, Object> source) {
        Map<String, Object> result = new LinkedHashMap<String, Object>();
        List<String> keys = new ArrayList<String>(source.keySet());
        Collections.reverse(keys);
        for (String key : keys) {
            result.put(key, source.get(key));
        }
        return result;
    }
}

Related

1. reverseMap(Map keyIdMap, Map keyValueMap)
2. reverseMapLookup(Map map, V value)
3. reverseMapping(Map value2keys, Map map)
4. reverseMapping(Map map)
5. sort(Map> dataNodes, boolean reverse)
6. sortByUsedSpace(Map> dataNodes, boolean reverse)
7. sortByValue(Map map, boolean reverse)
8. sortByValue(Map map, boolean doReverse)
9. toReverseIndex( Map> forwardIndex)