Хешове и keyword аргументи на блокове

Програмиране с Ruby

Курс във Факултета по Математика и Информатика към СУ

Решение на Трета задача от Ивелина Христова

Обратно към всички решения

Към профила на Ивелина Христова

Резултати

  • 2 точки от тестове
  • 0 бонус точки
  • 2 точки общо
  • 5 успешни тест(а)
  • 15 неуспешни тест(а)

Код

class RationalSequence
include Enumerable
def initialize(count_numbers)
@members = []
@numbers_computed = []
last_number = 1
direction = 1
while @members.length < count_numbers
compute_rational_for_direction(last_number, direction, count_numbers)
last_number = last_number + 1
direction = direction * (-1)
end
end
def compute_rational_for_direction(last_number, direction, count_numbers)
(1..last_number).to_a.each do |increasing_number|
reducing_number = last_number - increasing_number + 1
if @members.length == count_numbers
break
end
if direction == 1
next_number = Rational(reducing_number, increasing_number)
next_number_computed = reducing_number/increasing_number.to_f
else
next_number = Rational(increasing_number,reducing_number)
next_number_computed = increasing_number/reducing_number.to_f
end
if !(@numbers_computed.include? next_number_computed)
@members.push(next_number)
@numbers_computed.push(next_number_computed)
end
end
end
def each(&block)
@members.each do |member|
block.call(member)
end
end
end
class PrimeSequence
include Enumerable
def prime?(number_to_check)
is_prime = true
(2..number_to_check).to_a.each do |number|
is_prime = !(number_to_check % number == 0 && number != number_to_check)
break if number_to_check % number == 0 && number != number_to_check
end
is_prime
end
def initialize(count_numbers)
@members = []
number = 2
while @members.length < count_numbers
if prime? number
@members.push(number)
end
number = number + 1
end
end
def each(&block)
@members.each do |member|
block.call(member)
end
end
end
class FibonacciSequence
include Enumerable
def initialize(count_numbers)
@members = [0, 1]
number = 2
while @members.length < count_numbers
before_last = @members.last(2)[0]
last = @members.last(2)[1]
next_fibonacci_number = before_last + last
@members.push(next_fibonacci_number)
end
end
def each(&block)
@members.each do |member|
block.call(member)
end
end
end
module DrunkenMathematician
module_function
def prime?(number_to_check)
is_prime = true
(2..number_to_check).to_a.each do |number|
is_prime = !(number_to_check % number == 0 && number != number_to_check)
break if number_to_check % number == 0 && number != number_to_check
end
is_prime = false if number_to_check == 1
is_prime
end
def meaningless(n)
rational_numbers = RationalSequence.new(n)
group_one = rational_numbers.select do |number|
prime?(number.numerator) || prime?(number.denominator)
end
group_one
group_two = rational_numbers.to_a - group_one.to_a
numerator = group_one.reduce(1, :*)
denominator = group_two.reduce(1, :*)
Rational(numerator, denominator)
end
end

Лог от изпълнението

F.FFFFFF....FFFFFFFF

Failures:

  1) Fifth task RationalSequence can calculate the first four rational numbers
     Failure/Error: expect(RationalSequence.new(4).to_a).to eq %w(1/1 2/1 1/2 1/3).map(&:to_r)
       
       expected: [(1/1), (2/1), (1/2), (1/3)]
            got: [(1/1), (1/2), (2/1), (3/1)]
       
       (compared using ==)
     # /tmp/d20151111-27349-6ngr3c/spec.rb:4:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  2) Fifth task RationalSequence can calculate the first 28 rational numbers
     Failure/Error: expect(RationalSequence.new(28).to_a).to eq %w(
       
       expected: [(1/1), (2/1), (1/2), (1/3), (3/1), (4/1), (3/2), (2/3), (1/4), (1/5), (5/1), (6/1), (5/2), (4/3), (3/4), (2/5), (1/6), (1/7), (3/5), (5/3), (7/1), (8/1), (7/2), (5/4), (4/5), (2/7), (1/8), (1/9)]
            got: [(1/1), (1/2), (2/1), (3/1), (1/3), (1/4), (2/3), (3/2), (4/1), (5/1), (1/5), (1/6), (2/5), (3/4), (4/3), (5/2), (6/1), (7/1), (5/3), (3/5), (1/7), (1/8), (2/7), (4/5), (5/4), (7/2), (8/1), (9/1)]
       
       (compared using ==)
     # /tmp/d20151111-27349-6ngr3c/spec.rb:12:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  3) Fifth task RationalSequence is properly enumerable
     Failure/Error: expect(ones).to eq %w(1/1 1/2 1/3 1/4 1/5 1/6 1/7 1/8 1/9).map(&:to_r)
       
       expected: [(1/1), (1/2), (1/3), (1/4), (1/5), (1/6), (1/7), (1/8), (1/9)]
            got: [(1/1), (1/2), (1/3), (1/4), (1/5), (1/6), (1/7), (1/8)]
       
       (compared using ==)
     # /tmp/d20151111-27349-6ngr3c/spec.rb:20:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  4) Fifth task FibonacciSequence can return the first two Fibonacci numbers
     Failure/Error: expect(FibonacciSequence.new(2).to_a).to eq [1, 1]
       
       expected: [1, 1]
            got: [0, 1]
       
       (compared using ==)
     # /tmp/d20151111-27349-6ngr3c/spec.rb:26:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  5) Fifth task FibonacciSequence can return the first 20 Fibonacci numbers
     Failure/Error: expect(FibonacciSequence.new(20).to_a).to eq [
       
       expected: [1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181, 6765]
            got: [0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 144, 233, 377, 610, 987, 1597, 2584, 4181]
       
       (compared using ==)
     # /tmp/d20151111-27349-6ngr3c/spec.rb:30:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  6) Fifth task FibonacciSequence can be used to calculate the Lucas numbers
     Failure/Error: expect(FibonacciSequence.new(31, first: 2, second: 1).to_a).to eq [
     ArgumentError:
       wrong number of arguments (2 for 1)
     # /tmp/d20151111-27349-6ngr3c/solution.rb:77:in `initialize'
     # /tmp/d20151111-27349-6ngr3c/spec.rb:37:in `new'
     # /tmp/d20151111-27349-6ngr3c/spec.rb:37:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  7) Fifth task FibonacciSequence is properly enumerable
     Failure/Error: expect(FibonacciSequence.new(20).select { |x| x.even? }).to eq [
       
       expected: [2, 8, 34, 144, 610, 2584]
            got: [0, 2, 8, 34, 144, 610, 2584]
       
       (compared using ==)
     # /tmp/d20151111-27349-6ngr3c/spec.rb:45:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  8) Fifth task DrunkenMathematician #meaningless can calculate for 3
     Failure/Error: expect(DrunkenMathematician.meaningless(4)).to eq Rational(1, 3)
       
       expected: (1/3)
            got: (3/1)
       
       (compared using ==)
     # /tmp/d20151111-27349-6ngr3c/spec.rb:78:in `block (4 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  9) Fifth task DrunkenMathematician #meaningless can calculate for 42
     Failure/Error: expect(DrunkenMathematician.meaningless(42)).to eq Rational(1, 11)
       
       expected: (1/11)
            got: (11/1)
       
       (compared using ==)
     # /tmp/d20151111-27349-6ngr3c/spec.rb:82:in `block (4 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  10) Fifth task DrunkenMathematician #aimless can calculate for 3
     Failure/Error: expect(DrunkenMathematician.aimless(3)).to eq(Rational(2, 3) + Rational(5, 1))
     NoMethodError:
       undefined method `aimless' for DrunkenMathematician:Module
     # /tmp/d20151111-27349-6ngr3c/spec.rb:88:in `block (4 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  11) Fifth task DrunkenMathematician #aimless can calculate for 4
     Failure/Error: expect(DrunkenMathematician.aimless(4)).to eq(Rational(2, 3) + Rational(5, 7))
     NoMethodError:
       undefined method `aimless' for DrunkenMathematician:Module
     # /tmp/d20151111-27349-6ngr3c/spec.rb:92:in `block (4 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  12) Fifth task DrunkenMathematician #aimless can calculate for 42
     Failure/Error: expect(DrunkenMathematician.aimless(42)).to eq expected
     NoMethodError:
       undefined method `aimless' for DrunkenMathematician:Module
     # /tmp/d20151111-27349-6ngr3c/spec.rb:97:in `block (4 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  13) Fifth task DrunkenMathematician #worthless can calculate for 2
     Failure/Error: expect(DrunkenMathematician.worthless(2)).to eq %w(1/1).map(&:to_r)
     NoMethodError:
       undefined method `worthless' for DrunkenMathematician:Module
     # /tmp/d20151111-27349-6ngr3c/spec.rb:103:in `block (4 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  14) Fifth task DrunkenMathematician #worthless can calculate for 8
     Failure/Error: expect(DrunkenMathematician.worthless(8)).to eq expected
     NoMethodError:
       undefined method `worthless' for DrunkenMathematician:Module
     # /tmp/d20151111-27349-6ngr3c/spec.rb:108:in `block (4 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

  15) Fifth task DrunkenMathematician #worthless can calculate for 15
     Failure/Error: expect(DrunkenMathematician.worthless(15)).to eq %w(
     NoMethodError:
       undefined method `worthless' for DrunkenMathematician:Module
     # /tmp/d20151111-27349-6ngr3c/spec.rb:112:in `block (4 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (3 levels) in <top (required)>'
     # ./lib/language/ruby/run_with_timeout.rb:5:in `block (2 levels) in <top (required)>'

Finished in 0.01856 seconds
20 examples, 15 failures

Failed examples:

rspec /tmp/d20151111-27349-6ngr3c/spec.rb:3 # Fifth task RationalSequence can calculate the first four rational numbers
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:11 # Fifth task RationalSequence can calculate the first 28 rational numbers
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:18 # Fifth task RationalSequence is properly enumerable
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:25 # Fifth task FibonacciSequence can return the first two Fibonacci numbers
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:29 # Fifth task FibonacciSequence can return the first 20 Fibonacci numbers
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:36 # Fifth task FibonacciSequence can be used to calculate the Lucas numbers
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:44 # Fifth task FibonacciSequence is properly enumerable
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:77 # Fifth task DrunkenMathematician #meaningless can calculate for 3
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:81 # Fifth task DrunkenMathematician #meaningless can calculate for 42
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:87 # Fifth task DrunkenMathematician #aimless can calculate for 3
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:91 # Fifth task DrunkenMathematician #aimless can calculate for 4
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:95 # Fifth task DrunkenMathematician #aimless can calculate for 42
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:102 # Fifth task DrunkenMathematician #worthless can calculate for 2
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:106 # Fifth task DrunkenMathematician #worthless can calculate for 8
rspec /tmp/d20151111-27349-6ngr3c/spec.rb:111 # Fifth task DrunkenMathematician #worthless can calculate for 15

История (1 версия и 1 коментар)

Ивелина обнови решението на 26.10.2015 04:39 (преди над 9 години)

+class RationalSequence
+ include Enumerable
+
+ def initialize(count_numbers)
+ @members = []
+ @numbers_computed = []
+ last_number = 1
+ direction = 1
+ while @members.length < count_numbers
+ compute_rational_for_direction(last_number, direction, count_numbers)
+ last_number = last_number + 1
+ direction = direction * (-1)
+ end
+ end
+
+ def compute_rational_for_direction(last_number, direction, count_numbers)
+ (1..last_number).to_a.each do |increasing_number|
+ reducing_number = last_number - increasing_number + 1
+ if @members.length == count_numbers
+ break
+ end
+ if direction == 1
+ next_number = Rational(reducing_number, increasing_number)
+ next_number_computed = reducing_number/increasing_number.to_f
+ else
+ next_number = Rational(increasing_number,reducing_number)
+ next_number_computed = increasing_number/reducing_number.to_f
+ end
+ if !(@numbers_computed.include? next_number_computed)
+ @members.push(next_number)
+ @numbers_computed.push(next_number_computed)
+ end
+ end
+ end
+
+ def each(&block)
+ @members.each do |member|
+ block.call(member)
+ end
+ end
+end
+
+class PrimeSequence
+ include Enumerable
+
+ def prime?(number_to_check)
+ is_prime = true
+ (2..number_to_check).to_a.each do |number|
+ is_prime = !(number_to_check % number == 0 && number != number_to_check)
+ break if number_to_check % number == 0 && number != number_to_check
+ end
+
+ is_prime
+ end
+
+ def initialize(count_numbers)
+ @members = []
+ number = 2
+ while @members.length < count_numbers
+ if prime? number
+ @members.push(number)
+ end
+ number = number + 1
+ end
+ end
+
+ def each(&block)
+ @members.each do |member|
+ block.call(member)
+ end
+ end
+end
+
+class FibonacciSequence
+ include Enumerable
+
+ def initialize(count_numbers)
+ @members = [0, 1]
+ number = 2
+ while @members.length < count_numbers
+ before_last = @members.last(2)[0]
+ last = @members.last(2)[1]
+ next_fibonacci_number = before_last + last
+ @members.push(next_fibonacci_number)
+ end
+ end
+
+ def each(&block)
+ @members.each do |member|
+ block.call(member)
+ end
+ end
+end
+
+module DrunkenMathematician
+ module_function
+
+ def prime?(number_to_check)
+ is_prime = true
+ (2..number_to_check).to_a.each do |number|
+ is_prime = !(number_to_check % number == 0 && number != number_to_check)
+ break if number_to_check % number == 0 && number != number_to_check
+ end
+
+ is_prime = false if number_to_check == 1
+
+ is_prime
+ end
+
+ def meaningless(n)
+ rational_numbers = RationalSequence.new(n)
+ group_one = rational_numbers.select do |number|
+ prime?(number.numerator) || prime?(number.denominator)
+ end
+ group_one
+ group_two = rational_numbers.to_a - group_one.to_a
+ numerator = group_one.reduce(1, :*)
+ denominator = group_two.reduce(1, :*)
+ Rational(numerator, denominator)
+ end
+end