色々なfizz_buzz(逐次追記)

if文

fizz_buzz.rb

def fizz_buzz(n)
  if n % 15 == 0
    "fizz_buzz"
  elsif n % 3 == 0
    "fizz"
  elsif n % 5 == 0
    "buzz"
  else
    n.to_s
  end
end

int = [*1..100]
int.each do |n|
  puts fizz_buzz(n)
end
# もしくは下記でもOK
# (1..100).each do |n|
#  puts fizz_buzz(n)
# end

fizz_buzz.rb

def fizz_buzz
  int = [*1..100]
  int.each do |n|
    if n % 15 == 0
      puts "fizz_buzz"
    elsif n % 3 == 0
      puts "fizz"
    elsif n % 5 == 0
      puts "buzz"
    else
      puts n.to_s
    end
  end
end

fizz_buzz

case文

fizz_buzz.rb

def fizz_buzz(n)
  case 0
  when n % 15
    "fizz_buzz"
  when n % 3
    "fizz"
  when n % 5
    "buzz"
  else
    n.to_s
  end
end

int = [*1..100]
int.each do |n|
  puts fizz_buzz(n)
end