カード配り問題

Ruby

時間は気にせず挑戦してみた。

require "test/unit"

class TestCards < Test::Unit::TestCase
  def setup
    @cards = Cards.new
  end
  def test_deal
    assert_equal(["111", "222", "333"], @cards.deal(3, "123123123"))
    assert_equal(["12","23","31","12"], @cards.deal(4, "123123123"))
    assert_equal(["000", "111", "222", "333", "444", "555"], @cards.deal(6, "012345012345012345"))
    assert_equal(["123", "123", "123", "123"], @cards.deal(4, "111122223333"))
    assert_equal(["012345012345012345"], @cards.deal(1, "012345012345012345"))
    assert_equal(["", "", "", "", "", ""], @cards.deal(6, "01234"))
    assert_equal(["", ""], @cards.deal(2, ""))
  end
end

class Cards
  def deal(numPlayers, deck)
    @hands = Array.new(numPlayers) {|i| ""}
    deck = deck[0...deck.size - (deck.size % numPlayers )]
    deck.each_char.with_index do |card, i|
      @hands[i % numPlayers] << card
    end
    @hands
  end
end