Java Map Sort sortMapByValue(Map input, final boolean desc)

Description

sort Map By Value

License

Apache License

Declaration

public static <K, V extends Comparable<V>> Map<K, V> sortMapByValue(Map<K, V> input, final boolean desc) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.util.*;

public class Main {
    public static <K, V extends Comparable<V>> Map<K, V> sortMapByValue(Map<K, V> input, final boolean desc) {
        LinkedHashMap<K, V> output = new LinkedHashMap<K, V>(input.size());
        ArrayList<Map.Entry<K, V>> entryList = new ArrayList<Map.Entry<K, V>>(input.size());
        Collections.sort(entryList, new Comparator<Map.Entry<K, V>>() {
            public int compare(Map.Entry<K, V> o1, Map.Entry<K, V> o2) {
                if (desc)
                    return o2.getValue().compareTo(o1.getValue());
                return o1.getValue().compareTo(o2.getValue());
            }//from   w w  w .  jav  a2  s  .co  m
        });
        for (Map.Entry<K, V> entry : entryList) {
            output.put(entry.getKey(), entry.getValue());
        }

        return output;
    }

    public static <K, V extends Comparable<V>> Map<K, V> sortMapByValue(Map<K, V> input) {
        return sortMapByValue(input, true);
    }
}

Related

1. sortMap(Map oldMap, final boolean asc)
2. sortMap(Map map, int k)
3. sortMap(Map map, Comparator> compator)
4. sortMapByKey(Map data)
5. sortMapByKey(Map map)
6. sortMapByValue(Map map, Comparator comparator)
7. sortMapByValue(Map map, Comparator> valueComparator)
8. sortMapByValue(Map map, Comparator> comparator)
9. sortMapByValue(Map map, final boolean descending)