Re: [QUIZ] Bowling Scores (#181)

Sorry, I forgot to translate zeros into -, here's the fixxed version:



=== CODE START (FIX) ===


=begin


## Bowling Scores (#181)


Whether it is real or on the Wii, bowling is a fun game. (Okay, for the sake
of the quiz, let's assume it's a fun game.) But I've known folks who just
don't understand [how to score properly][1]. They can count pins knocked
down, and know that getting all ten pins in one roll is good, but they still
can't keep score.

Your task this week is to tally scores for these people. The input will be
the player's name and the number of pins felled from each roll. For example:

   ruby bowling_scores.rb John 6 2 7 1 10 9 0 8 2 10 10 3 5 7 2 5 5 8

Your should tally the per-frame scores and generate output in table form,
such as:

   John's final score: 140

   Frame     Roll  Roll    Score
      1        6     2        8
      2        7     1       16
      3        X             35
      4        9     -       44
      5        8     /       64
      6        X             87
      7        X            105
      8        3     5      113
      9        7     2      122
     10        5     /      140
      *        8


Note that you should make use of typical bowling symbols: `X` for a strike,
`/` for a spare, and `-` for zero. Also, if extra balls were thrown at the
end (to supplement a strike or spare in the final frame), list those as
frame `*` like the above, but without a score.

Extra credit: Generate ascii or graphical output that looks more like the
traditional bowling score form, which can be seen on [this page][1].


[1]: http://www.bowling2u.com/trivia/game/scoring.asp



=end

class Array
  def sum; self.inject{|a,b| a+b}; end
end

def get_points (shot,next_shots)
  return shot.sum + (
    # strike
    if shot.first == 10
      next_shots.flatten[0..1].sum
    # spare
    elsif shot.sum == 10
      next_shots.first.first
    # normal
    else
      0
    end
  )
end

def symbols(score,sep)
  return "X#{sep}" if score.first == 10
  return (score.sum == 10 ? "#{score[0]}#{sep}/" :
"#{score[0]}#{sep}#{score[1]}").gsub("0","-")
end

name, score, points = ARGV.first, ARGV[1..-1].join(" "), []
raise "Usage: 'ruby 181_bowling_score.rb [name] [scores]'" if name.nil? or
score.to_a.empty?

score = score.scan(/10|\d+\s*\d*/).collect{|e| e.split(" ").map!{|e|
e.to_i}}
score.each_with_index { |s,i| points[i] = get_points(s,score[i+1..-1]) }

puts "#{name}'s final score: #{points[0..9].sum}";
puts "Frame\tRoll\tRoll\tScore\t"
score.each_with_index do |s,i|
  puts "#{i+1}\t#{symbols(s,"\t")}\t#{(i<10) ? points[0..i].sum : ''}"
end




=== CODE END (FIX) ===








On Sun, Oct 26, 2008 at 11:25 PM, Sandro Paganotti <
[e-mail]> wrote:

> Here there's my attempt:
>
>
> === CODE START ===
>
> class Array
>   def sum; self.inject{|a,b| a+b}; end
> end
>
> def get_points (shot,next_shots)
>   return shot.sum + (
>     # strike
>     if shot.first == 10
>       next_shots.flatten[0..1].sum
>     # spare
>     elsif shot.sum == 10
>       next_shots.first.first
>     # normal
>     else
>       0
>     end
>   )
> end
>
> def symbols(score,sep)
>   return "X#{sep}" if score.first == 10
>   return "#{score[0]}#{sep}/" if score.sum == 10
>   return "#{score[0]}#{sep}#{score[1]}"
> end
>
> name, score, points = ARGV.first, ARGV[1..-1].join(" "), []
> raise "Usage: 'ruby 181_bowling_score.rb [name] [scores]'" if name.nil? or
> score.to_a.empty?
>
> score = score.scan(/10|\d+\s*\d*/).collect{|e| e.split(" ").map!{|e|
> e.to_i}}
> score.each_with_index { |s,i| points[i] = get_points(s,score[i+1..-1]) }
>
> puts "#{name}'s final score: #{points[0..9].sum}";
> puts "Frame\tRoll\tRoll\tScore\t"
> score.each_with_index do |s,i|
>   puts "#{i+1}\t#{symbols(s,"\t")}\t#{(i<10) ? points[0..i].sum : ''}"
> end
>
>
> === CODE END ===
>
>
>
>
>
> On Sun, Oct 26, 2008 at 5:09 PM, Ken Bloom <[e-mail]> wrote:
>
>> On Fri, 24 Oct 2008 09:25:45 -0500, Matthew Moss wrote:
>>
>> > Apologies for not having the Long Division quiz summary done yet. It
>> > will come sometime today or tomorrow. Meanwhile, I have the next quiz
>> > ready...
>> >
>> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>> >
>> > The three rules of Ruby Quiz 2:
>> >
>> > 1.  Please do not post any solutions or spoiler discussion for this quiz
>> > until 48 hours have passed from the time on this message.
>> >
>> > 2.  Support Ruby Quiz 2 by submitting ideas as often as you can! (A
>> > permanent, new website is in the works for Ruby Quiz 2. Until then,
>> > please visit the temporary website at
>> >
>> >    <http://splatbang.com/rubyquiz/>.
>> >
>> > 3.  Enjoy!
>> >
>> > Suggestion:  A [QUIZ] in the subject of emails about the problem helps
>> > everyone on Ruby Talk follow the discussion.  Please reply to the
>> > original quiz message, if you can.
>> >
>> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>> >
>> > ## Bowling Scores (#181)
>> >
>> >
>> > Whether it is real or on the Wii, bowling is a fun game. (Okay, for the
>> > sake of the quiz, let's assume it's a fun game.) But I've known folks
>> > who just don't understand [how to score properly][1]. They can count
>> > pins knocked down, and know that getting all ten pins in one roll is
>> > good, but they still can't keep score.
>> >
>> > Your task this week is to tally scores for these people. The input will
>> > be the player's name and the number of pins felled from each roll. For
>> > example:
>> >
>> >      ruby bowling_scores.rb John 6 2 7 1 10 9 0 8 2 10 10 3 5 7 2 5 5 8
>> >
>> > Your should tally the per-frame scores and generate output in table
>> > form, such as:
>> >
>> >      John's final score: 140
>> >
>> >      Frame     Roll  Roll    Score
>> >         1        6     2        8
>> >         2        7     1       16
>> >         3        X             35
>> >         4        9     -       44
>> >         5        8     /       64
>> >         6        X             87
>> >         7        X            105
>> >         8        3     5      113
>> >         9        7     2      122
>> >        10        5     /      140
>> >         *        8
>> >
>> >
>> > Note that you should make use of typical bowling symbols: `X` for a
>> > strike, `/` for a spare, and `-` for zero. Also, if extra balls were
>> > thrown at the end (to supplement a strike or spare in the final frame),
>> > list those as frame `*` like the above, but without a score.
>> >
>> > Extra credit: Generate ascii or graphical output that looks more like
>> > the traditional bowling score form, which can be seen on [this page][1].
>> >
>> >
>> > [1]: http://www.bowling2u.com/trivia/game/scoring.asp
>>
>> #!/usr/bin/env ruby
>> #Requires Ruby 1.8.7
>>
>> class Fixnum
>>  def to_bowl
>>    return '-' if self==0
>>    return 'X' if self==10
>>    return self.to_s
>>  end
>> end
>>
>> class Array
>>  def strike?
>>    self[0]==10
>>  end
>>  def spare?
>>    self[0]+self[1]==10
>>  end
>> end
>>
>> module Enumerable
>>  #each cons is almost what I want, but it won't generate partial cons at
>> the end
>>  def mycons n
>>    result=[]
>>    each_with_index do |f,i|
>>      result << self[i,n]
>>    end
>>    result
>>  end
>> end
>>
>> ARGV.map!(&:to_i)
>> fail if ARGV.any?{|x| x>10}
>> frames=ARGV.mycons(3)
>> frames.delete_at(-1)
>>
>> frames.each_with_index do |f,i|
>>  frames[i+1]=nil if f and not f.strike?
>> end
>> frames.compact!
>> totals=frames.inject([]) do |h,frame|
>>  last = h[-1] || 0
>>  frame.delete_at(2) unless frame.spare? or frame.strike?
>>  h+[last+frame.inject(&:+)]
>> end
>> printf "%8s%8s%8s%8s\n", "Frame", "Roll", "Roll", "Score"
>> frames.each_with_index do |f,i|
>>  spare='/' if f[0]+f[1]==10
>>  printf "%8s%8s%8s%8s\n", i+1, f[0].to_bowl, (spare or f[1].to_bowl unless
>> f.strike?), totals[i]
>>  if i==9 and f.spare?
>>    printf "%8s%8s\n", '*', f[2].to_bowl
>>  elsif i==9 and f.strike?
>>    printf "%8s%8s%8s\n", '*', f[1].to_bowl, f[2].to_bowl
>>  end
>> end
>>
>>
>>
>>
>> --
>> Chanoch (Ken) Bloom. PhD candidate. Linguistic Cognition Laboratory.
>> Department of Computer Science. Illinois Institute of Technology.
>> http://www.iit.edu/~kbloom1/ <http://www.iit.edu/%7Ekbloom1/>
>>
>>
>
>
> --
> Go outside! The graphics are amazing!
>



-- 
Go outside! The graphics are amazing!