Playlist and Quiz from Ruby Lecture 1

logan-playlist-and-quiz

##### PLAYLIST #####

# Given:
# 5 songs of the following lengths in seconds
# 223,215,378,324,254

# Goals:
# Assign the length set to variables
# Calculate the Total Length of the Playlists
# Express the Length in Minutes
# Average Song Length in Minutes

song_1 = 223
song_2 = 215
song_3 = 378
song_4 = 324
song_5 = 254

def get_playlist_info(*songs)
  length_secs = 0
  songs.each { |song| length_secs += song }
  length_mins = length_secs / 60
  avg_length_mins = length_mins / songs.length
  extra_seconds_total = length_secs % 60
  extra_seconds_avg = avg_length_mins % 60

  puts "Your playlist is #{length_mins.floor} minutes, #{extra_seconds_total} seconds long."
  puts "The average song length is #{avg_length_mins.floor} minutes, #{extra_seconds_avg} seconds."
end

get_playlist_info(song_1, song_2, song_3, song_4, song_5)

##### QUIZ #####

# Write a program that tells you the following:
#
# Hours in a year. How many hours are in a year?
# Minutes in a decade. How many minutes are in a decade?
# Your age in seconds. How many seconds old are you?
#
# Define at least the following methods to accomplish these tasks:
#
# seconds_in_minutes(1)
# minutes_in_hours(1)
# hours_in_days(1)
# days_in_weeks(1)
# weeks_in_years(1)
#
# If I am 1,111 million seconds old, how old am I?
#   Define an age_from_seconds method


def seconds_in_minutes(minutes)
  minutes * 60
end

def minutes_in_hours(hours)
  hours * 60
end

def hours_in_days(days)
  days * 24
end

def days_in_weeks(weeks)
  weeks * 7
end

def weeks_in_years(years)
  years * 52
end

def days_in_years(years)
  years * 365
end

def age_from_seconds(age)
  age / seconds_in_minutes(1) / minutes_in_hours(1) / hours_in_days(1) / days_in_weeks(1) / weeks_in_years(1)
end

puts "How many hours are in a year?"
puts hours_in_days(days_in_weeks(weeks_in_years(1)))

puts "How many minutes are in a decade?"
puts minutes_in_hours(hours_in_days(days_in_weeks(weeks_in_years(10))))

puts "How many seconds old are you?"
puts seconds_in_minutes(minutes_in_hours(hours_in_days(days_in_weeks(weeks_in_years(24)))))

puts "If I am 1,111 million seconds old, how old am I?"
puts "I am #{age_from_seconds(1111000000)} years old."