Веселин обнови решението на 25.10.2015 17:15 (преди над 8 години)
+require 'matrix'
+
+class RationalSequence
+ include Enumerable
+
+ def each
+ @sequence.each do |element|
+ yield element
+ end
+ end
+
+ def add_up_diagonal(x, y, limit)
+ while (x >= 0 && @sequence.length < limit) do
+ if (x >= 0 && y >= 0 && !@sequence.include?(Rational(@matrix[y, x][0], @matrix[y, x][1])))
+ @sequence << Rational(@matrix.element(y, x).first, @matrix.element(y, x).last)
+ end
+ if y <= 0
+ x += 1
+ break
+ end
+ y -= 1
+ x += 1
+ end
+ return x, y
+ end
+
+ def add_down_diagonal(x, y, limit)
+ while(y >=0 && @sequence.length < limit) do
+ if (y >= 0 && x >= 0 && !@sequence.include?(Rational(@matrix[y, x][0], @matrix[y, x][1])))
+ @sequence << Rational(@matrix.element(y, x).first, @matrix.element(y, x).last)
+ end
+ if x <= 0
+ y += 1
+ break
+ end
+ y += 1
+ x -= 1
+ end
+ return x, y
+ end
+
+ def initialize(limit)
+ @sequence = Array.new
+ @matrix = Matrix.build(limit, limit) {|x, y| [x+1, y+1]}
+ y = 0
+ x = 0
+ while(@sequence.length < limit) do
+ x, y = add_down_diagonal(x, y, limit)
+ x, y = add_up_diagonal(x, y, limit)
+ end
+ end
+end
+
+class Numeric
+ def prime?
+ return false if self <= 1
+ (2...self).all? { |divisor| self % divisor != 0 }
+ end
+end
+
+class PrimeSequence
+ include Enumerable
+
+ def each
+ @sequence.each do |element|
+ yield element
+ end
+ end
+
+ def initialize(limit)
+ @sequence = Array.new(0)
+ next_number = 2
+ while(@sequence.length < limit)
+ if (next_number.prime?)
+ @sequence << next_number
+ end
+ next_number+= 1
+ end
+ end
+end
+
+class FibonacciSequence
+ include Enumerable
+
+ def each
+ @sequence.each do |element|
+ yield element
+ end
+ end
+
+ def initialize(limit, first: 0, second: 1)
+ @sequence = Array.new(0)
+
+ while(@sequence.length < limit)
+ @sequence << first
+ temp = first + second
+ first = second
+ second = temp
+ end
+ end
+end
+
+module DrunkenMathematician
+ def self.meaningless(n)
+ rationals = RationalSequence.new(n).to_a.partition do |rational|
+ (rational.numerator.prime? || rational.denominator.prime?)
+ end
+ rationals.map { |group| (group.reduce(:*) || Rational(1, 1)) }.reduce(:/)
+ end
+
+ def self.aimless(n)
+ rationals = []
+ primes = PrimeSequence.new(n).to_a
+ primes.each_slice(2) do |numerator, denominator|
+ rationals << Rational(numerator, (denominator || 1))
+ end
+ rationals.reduce(:+)
+ end
+
+ def self.worthless(n)
+ fibonacci = FibonacciSequence.new(n).to_a.last
+ result = []
+ n.downto(1) do |current|
+ result = RationalSequence.new(current).to_a
+ if (result.reduce(:+).to_i <= fibonacci)
+ break
+ end
+ end
+ result
+ end
+end
На места имаш сериозни проблеми със спазването на конвенциите, направи справка с ръководството за стил.
имам някакъв проблем с едитора и като го копирам тук го размества и добавя уайтспейсове, ентър и подобни и не винаги се сещам да го прегледам и, както сега, изглежда ужасно
Настрой си го да ти отмества с два интервала. Автоматично.
Ако имаш проблем с това, питай във форума.