Question

What would be the best way to approach this problem?

We have a sheep farm, with two wool collector machines.

• The sheep have the following attributes: Age: Young, and Old. Color: Black and White.

  Both age and color values are random.

• Both machines only collect wool if the sheep are old. If not will echo:

This sheep is
not ready to be sheared.

• The animals should be processed in groups, for
  example 20 sheep in a row. And there should be a counter of total
  wool collected in each machine, both black & white.

I just need some guidance with syntaxis to get started. Thanks!

Answer 1

Sheep and machines are separate objects. Here’s a start:

class Sheep{

    const COLOR_WHITE = 'white';
    const COLOR_BLACK = 'black';
    const AGE_YOUNG = 0;
    const AGE_OLD = 1;

    private $_color;
    private $_age;

    public static function makeRandom(){
        $color = rand(0, 1)
            ? self::COLOR_WHITE
            : self::COLOR_BLACK;
        $age = rand(0, 1);
        return new self($color, $age);
    }

    public function __construct($color, $age){
        $this->_color = $color;
        $this->_age = $age;
    }

}

$sheep = Sheep::makeRandom();

Let us know where you’re at further on.

---

Swapping out the ternary operator:

// ...
if(rand(0, 1)){
    $color = self::COLOR_WHITE;
}else{
    $color = self::COLOR_BLACK;
{
// ...