ruby_array_exercises.rb

# In DOS type
###  cd \workshop
###  mkdir ruby_exercises
###  cd ruby_exercises

# Open the e editor
###  e .

# Create a new file called array_exercise.rb



###################################################
### EXERCISE 1
#Take a string an make it lower case
def exercise1 my_array
  my_array.uniq.sort
end

puts '### EXERCISE 1'
puts exercise1 ['Matt', 'Satty', 'Matt', 'Alex', 'Matt']
puts exercise1(['Rwanda', 'Uganda', 'Burundi'])
puts exercise1 [10, 55, 3, 1589, 1, 55]
















###################################################
### EXERCISE 2
#Iterate through an array and print each element
def exercise2 my_array
  my_array.each do |element|
  	puts element
  end
end

puts '### EXERCISE 2'
exercise2 ['Matt', 'Satty', 'Matt', 'Alex', 'Matt']
exercise2(['Rwanda', 'Uganda', 'Burundi'])
exercise2 [10, 55, 3, 1589, 1, 55]
###################################################







###################################################
### EXERCISE 3
#Iterate through an array and return an array with each element uppercased
def exercise3 my_array
  my_array.map do |element|
  	element.upcase if element.respond_to? :upcase
  end
end

puts '### EXERCISE 3'
puts exercise3 ['Matt', 'Satty', 'Matt', 'Alex', 'Matt']
puts exercise3(['Rwanda', 'Uganda', 'Burundi'])
puts exercise3 [10, 55, 3, 1589, 1, 55]


###################################################
### EXERCISE 4
# Convert an array to a comma separated string
def exercise4 my_array
  my_array.uniq.sort.join(', ')
end

puts '### EXERCISE 4'
exercise4 ['Matt', 'Satty', 'Matt', 'Alex', 'Matt']
exercise4(['Rwanda', 'Uganda', 'Burundi'])
exercise4 [10, 55, 3, 1589, 1, 55]