CODEWITHSUNDEEP
ruby
nmares12
nmares12

Reputation: 25

How to add commas to an array created by user input?

I'm struggling with something I'm working on:

puts "What are your test scores?"
test_scores = gets.chomp.to_a

Basically I want to get the user's test scores, add them together and divide by the number of scores they give. I know I can use length to see the number of tests scores in the array and inject(:+) to add the numbers within the array, but what if the user doesn't use a comma to separate the grades?

test_scores = [90 87 07]

I can't use inject without commas in place so how would I add the commas in between the numbers if the user doesn't? And then how do I keep from adding the commas if the user already has them in place?

Upvotes: 1

Views: 87

Answers (1)

Arup Rakshit
Arup Rakshit

Reputation: 118261

How about this ?

puts "What are your test scores?"
test_scores = gets.scan(/\d+/).map(&:to_i)
puts test_scores.inject(:+)/test_scores.size

Now I am running the code :-

arup@linux-wzza:~/Ruby> ruby -v test.rb
ruby 2.0.0p451 (2014-02-24 revision 45167) [i686-linux]
What are your test scores?
12 33 12
19
arup@linux-wzza:~/Ruby> ruby -v test.rb
ruby 2.0.0p451 (2014-02-24 revision 45167) [i686-linux]
What are your test scores?
12,34 66
37
arup@linux-wzza:~/Ruby>

Upvotes: 2

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