So I need to create a method that takes in an array of names and outputs a set of strings. How do I stored that output into an array? so instead of having an array of names I have an array of greetings?
def badge_maker(array)
array.each do |i|
counter = 0
while counter < 7
array[counter] << "Hello, my name is #{i}."
counter += i
end
return array
end
end
arrayOne = ["Edsger","Ada","Charles","Alan","Grace","Linus","Matz"]
badge_maker(arrayOne)You can use Array#product, Enumerable#map and Array#join.
arr = ["Edsger","Ada","Charles","Alan","Grace","Linus","Matz"]
["How 'ya doin, "].product(arr).map(&:join)
#=> ["How 'ya doin, Edsger", "How 'ya doin, Ada", "How 'ya doin, Charles",
# "How 'ya doin, Alan", "How 'ya doin, Grace", "How 'ya doin, Linus",
# "How 'ya doin, Matz"]
You can use map! if you want to modify the original array. But--however you approach it--an iterative method like each or map is your friend here because it implicitly handles the number of elements in the collection.
def badge_maker(array)
array.map! do |el|
"Hello " + el
end
end
array_one = ["Edsger","Ada","Charles","Alan","Grace","Linus","Matz"]
badge_maker(array_one)
puts array_one
#=> Hello Edsger
#=> Hello Ada
#=> Hello Charles
#=> Hello Alan
#=> Hello Grace
#=> Hello Linus
#=> Hello Matz
This is untested, but should do the trick:
def badge_maker(names)
greetings = [] # initialize greetings as an empty array
names.each do |name| # for each name in the names array
greetings << "Hello, my name is #{name}." # add a greeting for that name
end
return greetings # return the array of all greetings, at the end
end
arrayOne = ["Edsger","Ada","Charles","Alan","Grace","Linus","Matz"]
badge_maker(arrayOne)
Or, if you're wanting to actually transform the original array, rather than create a new array of greetings, then do this:
def badge_maker(names)
names.map! do |name| # for each name in the names array
"Hello, my name is #{name}." # convert it to a greeting for that name
end
end
arrayOne = ["Edsger","Ada","Charles","Alan","Grace","Linus","Matz"]
badge_maker(arrayOne)
# now, arrayOne will contain an array of greetings, not names
