在java中为元组计数排序

有关更多信息,请访问http://java.sun.com/docs/books/tutorial/collections/interfaces/order.html

假设你宣称你反对为

public class FruitAndCount implements Comparable<FruitAndCount> {
    private final String name;
    private final Integer count;

    public FruitAndCount(String name,int count) {
        this.name = name;
        this.count = count;
    }

    public String name() { return name;  }
    public int count()   { return count; }

    public int compareTo(FruitAndCount o) {
        return this.count.compareTo(o.count);
    }
}

然后,您应该能够进行以下调用,对您的列表进行排序：

FruitAndCount fruitArray[] = {
    new FruitAndCount("Apples",new FruitAndCount("Oranges",2),new FruitAndCount("Bananas",5)
};

List<FruitAndCount> fruit = Arrays.asList(fruitArray);
Collections.sort(fruit);

然后你应该有一个排序的水果列表.