Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import java.util.Comparator;

import java.util.List;
import java.util.Map;
import java.util.Map.Entry;

import com.google.common.collect.Ordering;

public class Main {
    /**
     * Creates a list of sorted entries by copying them from the entrySet of a
     * map. They are sorted by the natural order of the value (defined by
     * V.compareTo(V))
     * 
     * @param map
     *            the source map
     * 
     * @return a newly created sorted list
     */
    public static <K, V extends Comparable<V>> List<Entry<K, V>> orderByValue(Map<K, V> map, final boolean desc) {
        return order(map, new Comparator<Entry<K, V>>() {
            public int compare(Entry<K, V> o1, Entry<K, V> o2) {
                return (desc ? -1 : 1) * o1.getValue().compareTo(o2.getValue());
            }
        });
    }

    /**
     * Creates a list of sorted entries by copying them from the entrySet of a
     * map.
     * 
     * @param map
     *            the source map
     * @param comparator
     *            the desired order for the entries list
     * 
     * @return a newly created sorted list
     */
    public static <K, V> List<Entry<K, V>> order(Map<K, V> map, java.util.Comparator<Entry<K, V>> comparator) {
        return Ordering.from(comparator).sortedCopy(map.entrySet());
    }
}