列表

详情

JAVA25. 实现抽象方法

描述

已知抽象类Base中定义了calculate方法，该方法的计算过程依赖于sum()和avg()，而后两个方法均为抽象方法。要求定义Base的子类Sub类，并实现父类的抽象方法，使得main函数中的运算逻辑得以正确执行。

输入描述

两个整数

输出描述

两个整数的和除以两个整数的平均值（平均值为int类型，不考虑小数问题）

示例1

输入: 

1 2

输出: 

3

原站题解

上次编辑到这里，代码来自缓存 点击恢复默认模板

Java 解法, 执行用时: 13ms, 内存消耗: 9436KB, 提交时间: 2022-05-20 

import java.util.Scanner;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
public class Main {

    public static void main(String[] args)throws IOException {
        // Sub是需要你定义的子类
      Base base = new Sub();
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String [] read = br.readLine().split(" ");
        int x = Integer.parseInt(read[0]);
        int y = Integer.parseInt(read[1]);
        base.setX(x);
        base.setY(y);
        System.out.println(base.calculate());
    }

}

abstract class Base {

    private int x;
    private int y;

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }

    public int calculate() {
        if (avg() == 0) {
            return 0;
        } else {
            return sum() / avg();
        }
    }

    /**
     * 返回x和y的和
     */
    public abstract int sum();

    /**
     * 返回x和y的平均值
     */
    public abstract int avg();

}

class Sub extends Base {

    //write your code here......
    public int sum() {
        return super.getX() + super.getY();
    }
    public int avg() {
        return sum() / 2;
    }
}

Java 解法, 执行用时: 14ms, 内存消耗: 9380KB, 提交时间: 2022-04-27 

import java.util.Scanner;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

public class Main {

    public static void main(String[] args) throws IOException {
        // Sub是需要你定义的子类
        Base base = new Sub();

        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String [] read =br.readLine().split(" ");
        
            int x = Integer.parseInt(read[0]);
        int y = Integer.parseInt(read[1]);
            base.setX(x);
            base.setY(y);
            System.out.println(base.calculate());
    }

}

abstract class Base {

    private int x;
    private int y;

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }

    public int calculate() {
        if (avg() == 0) {
            return 0;
        } else {
            return sum() / avg();
        }
    }

    /**
     * 返回x和y的和
     */
    public abstract int sum();

    /**
     * 返回x和y的平均值
     */
    public abstract int avg();

}

class Sub extends Base {

    public void setX(int x){
        super.setX(x);
    }
    
    public void setY(int y){
        super.setY(y);
    }
    
    public int sum(){
        return super.getX()+super.getY();
    }

    public int avg(){
        return sum()/2;
    }

}

Java 解法, 执行用时: 14ms, 内存消耗: 9556KB, 提交时间: 2022-04-29 

import java.util.Scanner;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

public class Main {
    public static void main(String[] args) throws IOException {
        // Sub是需要你定义的子类
        Base base = new Sub();
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String [] read = br.readLine().split(" ");
        int x = Integer.parseInt(read[0]);
        int y = Integer.parseInt(read[1]);
        base.setX(x);
        base.setY(y);
        System.out.println(base.calculate());
    }

}

abstract class Base {
    private int x;
    private int y;
    public int getX() {
        return x;
    }
    public void setX(int x) {
        this.x = x;
    }
    public int getY() {
        return y;
    }
    public void setY(int y) {
        this.y = y;
    }
    public int calculate() {
        if (avg() == 0) {
            return 0;
        } else {
            return sum() / avg();
        }
    }
    public abstract int sum();
    public abstract int avg();
}
class Sub extends Base {
    public void setX(int x) {
        super.setX(x);
    }
    public void setY(int y) {
        super.setY(y);
    }
    public int sum() {
        return super.getX() + super.getY();
    }
    public int avg() {
        return sum() / 2;
    }
}

Java 解法, 执行用时: 26ms, 内存消耗: 10756KB, 提交时间: 2022-02-10 

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        // Sub是需要你定义的子类
        Base base = new Sub();

        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextInt()) {
            int x = scanner.nextInt();
            int y = scanner.nextInt();
            base.setX(x);
            base.setY(y);
            System.out.println(base.calculate());
        }
    }

}

abstract class Base {

    private int x;
    private int y;

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }

    public int calculate() {
        if (avg() == 0) {
            return 0;
        } else {
            return sum() / avg();
        }
    }

    /**
     * 返回x和y的和
     */
    public abstract int sum();

    /**
     * 返回x和y的平均值
     */
    public abstract int avg();

}

class Sub extends Base {

    public int sum(){
        return super.getX() + super.getY();
    }
    public int avg(){
        return sum()/2;
    }

}

Java 解法, 执行用时: 27ms, 内存消耗: 10564KB, 提交时间: 2022-02-09 

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        // Sub是需要你定义的子类
        Base base = new Sub();

        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextInt()) {
            int x = scanner.nextInt();
            int y = scanner.nextInt();
            base.setX(x);
            base.setY(y);
            System.out.println(base.calculate());
        }
    }

}

abstract class Base {

    private int x;
    private int y;

    public int getX() {
        return x;
    }

    public void setX(int x) {
        this.x = x;
    }

    public int getY() {
        return y;
    }

    public void setY(int y) {
        this.y = y;
    }

    public int calculate() {
        if (avg() == 0) {
            return 0;
        } else {
            return sum() / avg();
        }
    }

    /**
     * 返回x和y的和
     */
    public abstract int sum();

    /**
     * 返回x和y的平均值
     */
    public abstract int avg();

}

class Sub extends Base {

    //write your code here......
    public int sum(){
        return super.getX() + super.getY();
    }
    public int avg(){
        return sum()/2;
    }

}

上一题

© 2024 nowcoder.com