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| package misc; | |
| import java.util.Comparator; | |
| import java.util.Map; | |
| import java.util.TreeMap; | |
| public class ArrayTools | |
| { | |
| private static class ValueComparator<K , V extends Comparable<V>> implements Comparator<K> | |
| { | |
| Map<K, V> map; | |
| public ValueComparator(Map<K, V> map) { | |
| this.map = map; | |
| } | |
| @Override | |
| public int compare(K keyA, K keyB) { | |
| Comparable<V> valueA = map.get(keyA); | |
| V valueB = map.get(keyB); | |
| return valueA.compareTo(valueB); | |
| } | |
| } | |
| public static<K, V extends Comparable<V>> Map<K, V> sortByValue(Map<K, V> unsortedMap) | |
| { | |
| Map<K, V> sortedMap = new | |
| TreeMap<K, V>(new ValueComparator<K, V>(unsortedMap)); | |
| sortedMap.putAll(unsortedMap); | |
| return sortedMap; | |
| } | |
| } |
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