【筆試題】用 PHP 寫一個微波爐

arunfung發表於2019-04-30
筆試PHP

在網上看到一個筆試題，感覺挺有意思的，然後我嘗試著解一解，歡迎各位大佬指正。

程式碼題（用OOP的思想編碼，注意程式碼規範） 寫出你的思路，最好有程式碼

用php寫一個微波爐，注意物品正加熱時不能開門，帶皮帶殼食物不能被加熱。

感謝@MrJing、@minororange兩位大佬的建議，更進一步理解了OOP，現更新第二版。

第二版

<?php
/**
 * Created by PhpStorm.
 * User: arun
 * Date: 2019-04-30
 * Time: 16:10
 */

/**
 * 廚房用具
 * Interface kitchenWare
 */
interface kitchenWare {

    /**
     * 加工食材
     * @param Food $food
     * @return mixed
     */
    public function process(Food $food);

    /**
     * 是否正在加工
     * @return mixed
     */
    public function hasProcess();
}

/**
 * 微波爐
 * Class MicrowaveOven
 */
class MicrowaveOven implements kitchenWare
{
    /**
     * 是否加熱中
     * @var bool
     */
    protected $is_heat = false;

    /**
     * @param Food $food
     * @return mixed|string
     */
    public function process(Food $food)
    {
        if ($this->hasProcess()) {
            return '已有食物在加熱，無法開啟';
        } else {
            if ($food->hasShuck() || $food->hasPericarp()) {
                return '食物帶殼或者帶皮，無法進行加熱';
            } else {
                $this->is_heat = true;
                return '食物加熱中，加熱完成即可取出';
            }
        }
    }

    /**
     * 是否正在加工
     * @return bool|mixed
     */
    public function hasProcess()
    {
        return $this->is_heat;
    }
}

/**
 * 烤箱
 * Class Oven
 */
class Oven implements kitchenWare
{
    /**
     * 是否燒烤中
     * @var bool
     */
    protected $is_heat = false;

    /**
     * @param Food $food
     * @return mixed|string
     */
    public function process(Food $food)
    {
        if ($this->is_heat) {
            return '已有食物在烤制，無法開啟';
        } else {
            if ($food->hasShuck()) {
                return '食物帶殼，無法進行烤制';
            } else {
                $this->is_heat = true;
                return '食物烤制中，完成即可取出';
            }
        }
    }

    /**
     * 是否正在加工
     * @return bool|mixed
     */
    public function hasProcess()
    {
        return $this->is_heat;
    }
}

/**
 * 食物
 * Class Food
 */
class Food
{
    /**
     * 是否帶殼
     * @var bool
     */
    protected $is_shuck = false;
    /**
     * 是否帶皮
     * @var bool
     */
    protected $is_pericarp = false;

    /**
     * Food constructor.
     * @param bool $is_shuck
     * @param bool $is_pericarp
     */
    public function __construct(bool $is_shuck, bool $is_pericarp)
    {
        $this->is_shuck = $is_shuck;
        $this->is_pericarp = $is_pericarp;
    }

    /**
     * 判斷是否帶殼
     * @return bool
     */
    public function hasShuck()
    {
        return $this->is_shuck;
    }

    /**
     * 判斷是否帶皮
     * @return bool
     */
    public function hasPericarp()
    {
        return $this->is_pericarp;
    }
}

/**
 * 烹飪
 * Class Cooking
 */
class Cooking
{
    /**
     * @var kitchenWare
     */
    protected $kitchenWare;

    /**
     * Cook constructor.
     * @param kitchenWare $kitchenWare
     */
    public function __construct(kitchenWare $kitchenWare)
    {
        $this->kitchenWare = $kitchenWare;
    }

    /**
     * 烹飪食物
     * @param Food $food
     * @return mixed
     */
    public function cooking(Food $food)
    {
        $data = $this->kitchenWare->process($food);
        return $data;
    }
}

/**
 * 微波爐加熱
 * @return mixed
 */
function test()
{
    $cooking = new Cooking(new MicrowaveOven());
    $food = new Food(false, false);
    $result = $cooking->cooking($food);
    $result2 = $cooking->cooking($food);
    var_dump($result, $result2);
}

/**
 * 烤箱烤制
 * @return mixed
 */
function test2()
{
    $cooking = new Cooking(new Oven());
    $food = new Food(false, true);
    $result =  $cooking->cooking($food);
    $result2 =  $cooking->cooking($food);
    var_dump($result, $result2);
}

test();
test2();

第一版

<?php
/**
 * Created by PhpStorm.
 * User: arun
 * Date: 2019-04-30
 * Time: 16:10
 */

/**
 * 廚房用具
 * Interface kitchenWare
 */
interface kitchenWare {
    /**
     * 加工食材
     *
     * @param $food
     * @return mixed
     */
    public function process($food);
}

/**
 * 微波爐
 * Class MicrowaveOven
 */
class MicrowaveOven implements kitchenWare
{
    /**
     * 是否加熱中
     * @var bool
     */
    protected $is_heat = false;

    public function process($food)
    {
        if ($this->is_heat) {
            return '已有食物在加熱，無法開啟';
        } else {
            if ($food['is_shuck'] || $food['is_pericarp']) {
                return '食物帶殼或者帶皮，無法進行加熱';
            } else {
                $this ->is_heat = true;
                return '食物加熱中，加熱完成即可取出';
            }
        }
    }
}

/**
 * 烤箱
 * Class Oven
 */
class Oven implements kitchenWare
{
    /**
     * 是否燒烤中
     * @var bool
     */
    protected $is_heat = false;

    public function process($food)
    {
        if ($this->is_heat) {
            return '已有食物在烤制，無法開啟';
        } else {
            if ($food['is_shuck']) {
                return '食物帶殼，無法進行烤制';
            } else {
                $this ->is_heat = true;
                return '食物烤制中，完成即可取出';
            }
        }
    }
}

/**
 * 食物
 * Class Food
 */
class Food
{
    /**
     * 是否帶殼
     * @var bool
     */
    protected $is_shuck = false;
    /**
     * 是否帶皮
     * @var bool
     */
    protected $is_pericarp = false;

    /**
     * Food constructor.
     * @param bool $is_shuck
     * @param bool $is_pericarp
     */
    public function __construct(bool $is_shuck, bool $is_pericarp)
    {
        $this->is_shuck = $is_shuck;
        $this->is_pericarp = $is_pericarp;
    }

    public function getFood()
    {
        return [
            'is_shuck' => $this->is_shuck,
            'is_pericarp' => $this->is_pericarp,
        ];
    }
}

/**
 * 烹飪
 * Class Cooking
 */
class Cooking
{
    /**
     * @var kitchenWare
     */
    protected $kitchenWare;

    /**
     * Cook constructor.
     * @param kitchenWare $kitchenWare
     */
    public function __construct(kitchenWare $kitchenWare)
    {
        $this->kitchenWare = $kitchenWare;
    }

    /**
     * 烹飪食物
     * @param $food
     * @return mixed
     */
    public function cooking($food)
    {
        $data = $this->kitchenWare->process($food);
        return $data;
    }
}

/**
 * 微波爐加熱
 * @return mixed
 */
function test()
{
    $cooking = new Cooking(new MicrowaveOven());
    $food = new Food(false, false);
    $result = $cooking->cooking($food->getFood());
    $result2 = $cooking->cooking($food->getFood());
    var_dump($result, $result2);
}

/**
 * 烤箱烤制
 * @return mixed
 */
function test2()
{
    $cooking = new Cooking(new Oven());
    $food = new Food(false, true);
    $result =  $cooking->cooking($food->getFood());
    $result2 =  $cooking->cooking($food->getFood());
    var_dump($result, $result2);
}

test();
test2();
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  • 文章來源https://blog.arunfung.com

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