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FizzBuzz with classes
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class Enumerator::Lazy | |
def filter_map | |
Lazy.new(self) do |holder, *values| | |
result = yield *values | |
holder << result if result | |
end | |
end | |
end | |
class Fizz | |
def initialize(head, tail) | |
@list = (head..Float::INFINITY).lazy.filter_map{|i| i if i % 3 == 0}.first(tail) | |
end | |
def fizz?(num) | |
search = @list | |
search.include?(num) | |
end | |
def drop(num) | |
list = @list | |
list.delete(num) | |
end | |
def to_a | |
@list.to_a | |
end | |
end | |
class Buzz | |
def initialize(head, tail) | |
@list = (head..Float::INFINITY).lazy.filter_map{|i| i if i % 5 == 0}.first(tail) | |
end | |
def buzz?(num) | |
search = @list | |
search.include?(num) | |
end | |
def drop(num) | |
list = @list | |
list.delete(num) | |
end | |
def to_a | |
@list.to_a | |
end | |
end | |
class FizzBuzz | |
def initialize(head, tail) | |
@list = (head..Float::INFINITY).lazy.filter_map{|i| i if i % 15 == 0}.first(tail) | |
end | |
def fizzbuzz?(num) | |
search = @list | |
search.include?(num) | |
end | |
def to_a | |
@list.to_a | |
end | |
def drop(num) | |
list = @list | |
list.delete(num) | |
end | |
end | |
stopper = 100 | |
@fizz = Fizz.new(1,100) | |
@buzz = Buzz.new(1,100) | |
@fizzbuzz = FizzBuzz.new(1,100) | |
def min(v, n) | |
if v == 1 | |
puts "Fizz: #{n}" | |
@fizz::drop(n) | |
elsif v == 2 | |
puts "Buzz: #{n}" | |
@buzz::drop(n) | |
else | |
puts "FizzBuzz: #{n}" | |
@fizzbuzz::drop(n) | |
end | |
end | |
(@fizz.to_a & @fizzbuzz.to_a).map{|d| @fizz::drop(d)} | |
(@buzz.to_a & @fizzbuzz.to_a).map{|d| @buzz::drop(d)} | |
while @fizz.to_a.min < stopper or @buzz.to_a.min < stopper or @fizzbuzz.to_a.min < stopper | |
f, b, fb = @fizz.to_a.min, @buzz.to_a.min, @fizzbuzz.to_a.min | |
min(1,f) if f < fb and f < b | |
min(2,b) if b < f and b < fb | |
min(0,fb) if fb < b and fb < f | |
end |
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