README.md

Challenge 031: Candy Cane Plants

Challenge

Last year, [INSERT_HOLIDAY_MYTH_HERE] (hereafter referred to as “Santa”) created a special GMO: the Candy Cane Plant. However, after creating the plant Santa and his biologist friends found out that it suffered from an extreme deficiency: each plant could only breed once. Each candy cane plant has the following properties and methods:

class CandyCanePlant
{
  /**
   * Candy Canes produced per week
   *
   * @var int
   */
  private $candyCanesPerWeek;

  /**
   * Whether or not this plant has bred
   *
   * @var bool
   */
  private $hasBred = false; 
}

interface BreederServiceInterface
{
  /**
   * Breed two candy cane plants
   *
   * @returns CandyCanePlant Child plant object
   */
  public function breed(CandyCanePlant $father, CandyCanePlant $mother);
}

A newly bred candy cane plant has a production value of:

(fathersProductionValue ** mothersProductionValue) mod (fathersProductionValue + mothersProductionValue)

and has a HasBred value of false.

Write code that optimizes the total number of candy canes produced per week given an initial stock of CandyCanePlant[] plants, producing a new collection of CandyCanePlant[]s. The output of your code should also produce the total number of candy canes produced per week with the bred stock.

For example, given the following initial stock:

CandyCanePlant { CandyCanesPerWeek = 5}
CandyCanePlant { CandyCanesPerWeek = 3}
CandyCanePlant { CandyCanesPerWeek = 2}

Your code should inform Santa what his final stock will be, as well as the total production value of said stock. The above example should produce a total production output of

CandyCanePlant { CandyCanesPerWeek = 5, HasBred = true}
CandyCanePlant { CandyCanesPerWeek = 5, HasBred = true}
CandyCanePlant { CandyCanesPerWeek = 4, HasBred = false}
CandyCanePlant { CandyCanesPerWeek = 3, HasBred = true}
CandyCanePlant { CandyCanesPerWeek = 2, HasBred = true}

and a production value of 19 per week.

Code will be judged based on a large input stock of Candy Cane Plants.

Installation

1. composer install

Useage

1. Run php index.php