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def find_min_element_for(arr)
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min_element = arr[0]
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for element in arr
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min_element = element if element < min_element
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end
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min_element
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end
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def find_min_element_while(arr)
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min_element = arr[0]
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index = 0
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while index < arr.size
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min_element = arr[index] if arr[index] < min_element
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index += 1
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end
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min_element
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end
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def find_first_positive_index_for(arr)
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for index in 0...arr.size
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return index if arr[index] > 0
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end
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nil
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end
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def find_first_positive_index_while(arr)
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index = 0
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while index < arr.size
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return index if arr[index] > 0
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index += 1
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end
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nil
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end
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def find_first_positive_for(arr)
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for element in arr
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return element if element > 0
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end
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nil
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end
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def find_first_positive_while(arr)
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index = 0
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while index < arr.size
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return arr[index] if arr[index] > 0
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index += 1
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end
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nil
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end
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# INPUT
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array = [-10, -5, 0, 3, 5, -2]
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puts "Минимальный элемент (for): #{find_min_element_for(array)}"
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puts "Минимальный элемент (while): #{find_min_element_while(array)}"
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puts "Индекс первого положительного элемента (for): #{find_first_positive_index_for(array)}"
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puts "Индекс первого положительного элемента (while): #{find_first_positive_index_while(array)}"
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puts "Первый положительный элемент (for): #{find_first_positive_for(array)}"
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puts "Первый положительный элемент (while): #{find_first_positive_while(array)}"
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@ -0,0 +1,62 @@
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def find_min_element(arr)
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min_element = arr[0]
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arr.each do |element|
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min_element = element if element < min_element
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end
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min_element
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end
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def find_first_positive_index(arr)
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arr.each_with_index do |element, index|
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return index if element > 0
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end
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nil
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end
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def find_first_positive(arr)
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arr.each do |element|
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return element if element > 0
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end
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nil
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end
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def main
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method_name = ARGV[0]
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file_path = ARGV[1]
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if method_name.nil? || file_path.nil?
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puts "Неправльный формат ввода. Использование: ruby program.rb <method_name> <file_path>"
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puts "method_name: 'min', 'first_positive_index' или 'first_positive'"
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exit
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end
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begin
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array = File.read(file_path).split.map(&:to_i)
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rescue Errno::ENOENT
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puts "Файл не найден: #{file_path}"
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exit
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end
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case method_name
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when 'min'
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result = find_min_element(array)
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puts "Минимальный элемент: #{result}"
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when 'first_positive_index'
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result = find_first_positive_index(array)
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puts "Индекс первого положительного элемента: #{result.nil? ? 'Нет положительного элемента' : result}"
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when 'first_positive'
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result = find_first_positive(array)
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puts "Первый положительный элемент: #{result.nil? ? 'Нет положительного элемента' : result}"
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else
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puts "Неизвестный метод: #{method_name}"
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puts "Доступные методы: 'min', 'first_positive_index', 'first_positive'"
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end
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end
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main if __FILE__ == $0
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@ -0,0 +1 @@
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-10 -5 0 3 5 -2
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@ -0,0 +1,4 @@
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# Lab 2
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> "И тут я обнаружил что случайно сделал 3-5 задачи в 1-2"
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@ -0,0 +1,92 @@
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require_relative 'person'
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class Student < Person
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attr_accessor :surname, :name, :patronymic
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def initialize(args = {})
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super(args)
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@surname = args.fetch(:surname)
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raise ArgumentError, "Invalid surname format: #{@surname}" unless self.class.valid_name?(@surname)
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@name = args.fetch(:name)
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raise ArgumentError, "Invalid name format: #{@name}" unless self.class.valid_name?(@name)
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@patronymic = args.fetch(:patronymic)
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raise ArgumentError, "Invalid patronymic format: #{@patronymic}" unless self.class.valid_name?(@patronymic)
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set_contacts(
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phone: args[:phone],
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telegram: args[:telegram],
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email: args[:email]
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)
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end
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def self.from_string(student_string)
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parts = student_string.split('|').map(&:strip)
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surname, name, patronymic = parts[0].split(' ')
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id = parts[1].split(': ').last.to_i
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phone = parts[2].split(': ').last
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telegram = parts[3].split(': ').last
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email = parts[4].split(': ').last
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git = parts[5].split(': ').last
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new(
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surname: surname,
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name: name,
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patronymic: patronymic,
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id: id,
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phone: phone,
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telegram: telegram,
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email: email,
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git: git
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)
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end
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def self.read_from_txt(file_path)
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raise IOError, "File path is invalid or file does not exist: #{file_path}" unless File.exist?(file_path)
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students = []
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File.foreach(file_path) do |line|
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line.strip!
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next if line.empty?
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begin
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student = from_string(line)
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students << student
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rescue ArgumentError => e
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puts "Error processing line: '#{line}'. Reason: #{e.message}"
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end
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end
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students
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end
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def self.write_to_txt(file_path, students)
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raise ArgumentError, "Expected an array of Student objects" unless students.is_a?(Array) && students.all? { |s| s.is_a?(Student) }
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File.open(file_path, 'w') do |file|
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students.each do |student|
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file.puts student.to_s
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end
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end
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puts "Data successfully written to #{file_path}"
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rescue IOError => e
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puts "An error occurred while writing to the file: #{e.message}"
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end
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def surname_and_initials
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"#{@surname} #{name[0]}.#{patronymic[0]}."
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end
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def to_s
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"#{@surname} #{@name} #{@patronymic} | ID: #{@id || 'N/A'} | " \
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"Phone: #{@phone || 'N/A'} | Telegram: #{@telegram || 'N/A'} | " \
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"Email: #{@email || 'N/A'} | Git: #{@git || 'N/A'}"
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end
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def get_info
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"#{surname_and_initials}, Git: #{git_info}, Contact: #{contact_info}"
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end
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end
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@ -0,0 +1,31 @@
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require_relative 'person'
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class StudentShort < Person
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attr_reader :surname_initials, :contact
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def initialize(student)
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super(id: student.id, git: student.git_info)
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@surname_initials = student.surname_and_initials
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@contact = student.contact_info
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end
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def self.from_string(id, info_string)
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parts = info_string.split(', ').map(&:strip)
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surname_initials = parts[0]
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git = parts[1].split(': ').last
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contact = parts[2].split(': ').last
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new_instance = allocate
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new_instance.send(:initialize_from_data, id, surname_initials, git, contact)
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new_instance
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end
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private
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def initialize_from_data(id, surname_initials, git, contact)
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@id = id
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@surname_initials = surname_initials
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@git = git
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@contact = contact
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end
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end
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Reference in new issue