CSP 202009-1 称检测点查询 Java

import java.util.ArrayList;
import java.util.Collections;
import java.util.Scanner;

class Coor implements Comparable<Coor> {
    private int n;
    private double value;

    public Coor(int n, double value) {
        this.n = n;
        this.value = value;
    }

    public int getN() {
        return n;
    }

    public void setN(int n) {
        this.n = n;
    }

    public double getValue() {
        return value;
    }

    public void setValue(double value) {
        this.value = value;
    }
    @Override
    public int compareTo(Coor o) {
        if (this.value > o.value) return 1;
        else if (this.value < o.value) return -1;
        else return 0;
    }
}
public class Main{
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        int n = input.nextInt();
        int x = input.nextInt();
        int y = input.nextInt();
        ArrayList<Coor> dis = new ArrayList<Coor>();
        for(int i=0;i<n;i++){
            int tempX = input.nextInt();
            int tempY = input.nextInt();
            double distance = Math.sqrt((x-tempX)*(x-tempX)+(y-tempY)*(y-tempY));
            dis.add(new Coor(i+1,distance));
        }
        Collections.sort(dis);
        for(int i=0;i<3;i++){
            System.out.println(dis.get(i).getN());
        }
    }
}

本文地址：https://blog.csdn.net/Mrwyx/article/details/110291150