PROSAGA码农传奇-eclipse-通过double和String对arraylist进行排序

通过double和String对arraylist进行排序

作者: ⑩Ⅵ嵗Ｄ夨憶
发布时间: 2024-01-14 02:21:01 (6月前)
转自：

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  <P>
    你试试这个吗？
  </p>
   <pre>
    <code>
      import java.util.ArrayList;
import java.util.Collections;

public class Dog implements Comparable<Dog> {

private double tailLength;
    private String name;

public Dog(final double _tailLength, final String _name) {
        tailLength = _tailLength;
        name = _name;
    }

@Override
    public String toString() {
        return "Dog [tailLength=" + tailLength + ", name=" + name + "]";
    }

@Override
    public int compareTo(final Dog o) {
        int res = Double.compare(tailLength, o.getTailLength());
        if (res == 0) {
            res = name.compareTo(o.getName());
        }
        return res;
    }

public double getTailLength() {
        return tailLength;
    }

public void setTailLength(final double tailLength) {
        this.tailLength = tailLength;
    }

public String getName() {
        return name;
    }

public void setName(final String name) {
        this.name = name;
    }

public static void main(final String[] args) {
        final ArrayList<Dog> dogs = new ArrayList<Dog>();
        dogs.add(new Dog(2, "Dog D"));
        dogs.add(new Dog(2, "Dog A"));
        dogs.add(new Dog(5, "Dog C"));
        dogs.add(new Dog(4, "Dog A"));
        dogs.add(new Dog(3, "Dog A"));
        dogs.add(new Dog(3, "Dog B"));
        dogs.add(new Dog(1, "Dog A"));

// Sort Dog by tailLength and name
        Collections.sort(dogs);

final Scanner sc = new Scanner(System.in);
        while (true) {
            System.out.println("tailLength: ");
            final double inputTaillength = sc.nextDouble();
            for (final Dog dog : dogs) {
                if (dog.tailLength == inputTaillength) {
                    System.out.println(dog);
                }
            }

}
    }
}

</code>
  </pre>
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