Correction Exercices Ruby du Jour 1 - Dawan

exercice1.rb

# Permutation
question = "La vie ?"
answer = 42

puts question
puts answer

# Methode 1
temp = question
question = answer
answer = temp

puts question
puts answer

# Methode 2
question, answer = answer, question

puts question
puts answer

exercice2.rb

def introduce_me(first_name, last_name, age)
  # Concatenation
  # return "Vous etes " + first_name + " " + last_name + ", et vous avez " + age.to_s + " ans !"

  # Interpolation
  return "Vous etes #{first_name.capitalize} #{last_name.capitalize}, et vous avez #{age} ans !"
end

# sentence = introduce_me("Gabriel", "dehan", 26)
# puts sentence
# DRY = Don't Repeat Yourself
=begin
puts "Quel est votre prenom ?"
print "> "
prenom = gets.chomp

puts "Quel est votre nom ?"
print "> "
nom = gets.chomp

puts "Quel est votre age ?"
print "> "
age = gets.chomp

puts introduce_me(prenom, nom, age)
=end

def ask_for(information)
  puts "Quel est votre #{information} ?"
  print "> "
  return gets.chomp
end

prenom = ask_for("prenom")
nom = ask_for("nom")
age = ask_for("age").to_i

puts introduce_me(prenom, nom, age)

exercice3.rb

# -*- coding: utf-8 -*-

def clean_whitespaces(text)
  # text.lstrip.rstrip
  text.strip
end

def is_in?(sentence, word)
  return sentence.include?(word)
end
# puts is_in?("hey jude", "jude")

def replace(string, character, replacement)
  # string.sub(character, replacement)
  string.gsub(character, replacement)
end
# puts replace("casanova", "a", "o") # => "cosonovo"

def divisible_by_two?(number)
  number.even?
  # TODO: Retournez true si `number` est divisible par 2
  # Exemple d'appel: divisible_by_two?(6) => true
end
# puts divisible_by_two?(6) #=> true

def randomize(array)
  array.shuffle
  # TODO: Retournez `array` mélangé.
  # Exemple d'appel: randomize([1, 2, 3, 4]) => [2, 1, 4, 3]
end
# p randomize([1, 2, 3, 4]) # => [2, 1, 4, 3]

def random_subset(array, count)
  array.sample(count)
  # array.shuffle.take(count)
  # array.shuffle.slice(0, count)
  # array.shuffle[0..count]
  # TODO: Retournez un morceau de `array` mélangé. La taille du tableau retourné doit être de `count` élements.
  # Exemple d'appel: random_subset(('a'..'z').to_a, 4) => ["u", "q", "l", "t"]
end

def ascending_order(array)
  array.sort
  # TODO: Retournez une copie du tableau `array` trié par ordre ascendant.
  # Exemple d'appel: ascending_order([5, 3, 1, 6, 9]) => [1, 3, 5, 7, 9]
end

html_compiler.rb

def tag(tag_name, content, id)
  "<#{tag_name} id=\"#{id}\">#{content}</#{tag_name}>"
end

tag('h1', "Ruby", 'titre')
# => <h1 id="titre">Ruby</h1>

tag('p', "Ce paragraphe contient du texte", 'paragraph')
# => <p id="paragraph">Ce paragraphe contient du texte</p>