ruby 这是测验1。我只通过哈希部分制作了它。也不能让我的数组只打印一次。

Posted 2021-05-16

# This is our first week's !quiz Let's find out what we know.
#

# The ideal range of your motor cycle speed 20 - 55. Over 55 is SCAREE!
# Check if your moto_speed is within that range using boolean (&&, ||)
# operators and comparison operators (== =< >= !=)

# if your moto_speed variable is in the right range print out a good
# message, aka "Wheee!" Otherwise print out an appropriate response.
# Your code goes below:

#Q if ...

# Make a method that checks your moto speed when called
# ___________________________

def check_speed (mph)
  if
    mph > 20 && mph < 55
    puts "Wheee!"
  elsif mph < 20
    puts "Booooring!"
  else
    puts "Jesus, Mary and Joseph!"
  end
end
check_speed(60)

# ___________________________

# Make a method to start your bike! It should print out "vrooom!"
# when it's called

# your code below:


#___________________________

def bike_start(start)
  if start == "go"
    puts "vroooom!"
  end
end
puts bike_start("go")

#___________________________


# You're the leader of the pack.
# Create an Array of 3 motorcycle makes!

# ___________________________

my_convoy = ["Triumph", "Indian", "Harley"]

# Loop through your convoy and print out each motorcycle's make
# Your code below:

my_convoy.map { |x| p my_convoy }

# ___________________________

# You need to keep track of your gang.
# Create 3 separate Hashes containing riders' info. like so:

rider1 = { :name => "Guy", :helmet => "pink", :height => "5'2\"" }
rider2 = { :name => "Sylvester", :helmet => "sparkly", :height => "6'5\""  }
rider3 = { :name => "Alejandro", :helmet => "rainbow", :height => "5'8\"" }

# Then a larger Hash containing all riders

my_gang = {:guy => "Guy", :sylvester => "Sylvester", :alejandro => "Alejandro"}


# #___________________________

# # Loop through your gang and print out each rider's name & helmet color using a block.

# Your code below:

puts my_gang[:name]
my_gang.each do |key, value|
  puts value[:name]
end

# *** I got to here *** ^NC

# Now for each rider add their motorcycle to their Hash,
# assume they are in the same order as your Array
# use a loop. Your code below:


# Define an Class to represent each gang member
# It should include methods to set their name and motorcyle make
# When say_name(name) is called the rider's name is printed out




#Q Class Rider

#   def initialize(name, moto_model)
#   end

#   def say_name(rider)
#   end
#Q end

# A fellow student is noticing that instances of his new Foo class are missing
# their @bar instance variable

#Q class Foo
#   attr_reader :bar

#   def intialize(bar)
#     @bar = bar
#   end
# end

# foo = Foo.new('value of bar')
#Q foo.bar # TODO value is missing!

# Fix this code so it prints “hello”
#
#Q class Bar
#   def say_something
#     puts 'hello'
#   end
# end

# bar = Bar.new
#Q bar.hello

# Final Challenge:
# 1. initialize 3 new instances of class Rider
# 2. add these to a new Hash
# 3. loop through the riders Hash and call say_name for each rider.
# Hint: you will need an attr_accessor in Rider to call it's method
# Your code below: