CODEWITHSUNDEEP
ruby
Charalambos Pouroutides
Charalambos Pouroutides

Reputation: 47

How to split an already split array ruby

I have this function in Ruby

def translate word  
  vowels=["a","e","I","O","U"]  
  i=1.to_i
  sentense=word.split(" ").to_a     
  puts sentense if sentense.length >=1
  sentense.split("")        
  puts sentense     
end

I have this phrase "this is a test phrase " and at first I want to create an array that looks like:

["this","is","a", "test", "phrase"]

Then I want to create another array it to look like: [["t","h","i","s"],["i","s"],["a"],["t","e","s","t"],["p","h","r","a","s","e"].

I tried 

sentense=word.split(" ").to_a
new_array=sentense.split("").to_a

but it didn't work

Upvotes: 2

Views: 81

Answers (2)

Cary Swoveland
Cary Swoveland

Reputation: 110685

def chop_up(str)
  str.strip.each_char.with_object([[]]) { |c,a| c == ' ' ? (a << []) : a.last << c }
end

chop_up "fee fi fo fum"
  #=> [["f", "e", "e"], ["f", "i"], ["f", "o"], ["f", "u", "m"]]
chop_up " fee fi fo fum "
  #=> [["f", "e", "e"], ["f", "i"], ["f", "o"], ["f", "u", "m"]]
chop_up "feefifofum "
  #=> [["f", "e", "e", "f", "i", "f", "o", "f", "u", "m"]]
chop_up ""
  #=> [[]]

Upvotes: 1

Sebasti&#225;n Palma
Sebasti&#225;n Palma

Reputation: 33420

You could use String#split, Enumerable#map and String#chars:

p "this is a test phrase".split.map(&:chars)
# => [["t", "h", "i", "s"], ["i", "s"], ["a"], ["t", "e", "s", "t"], ["p", "h", "r", "a", "s", "e"]]

string.split(' ') could be written as string.split, so you can omit passing the whitespace in parenthesis.

And this also gives you an array, there's no need to use to_a, you'll have an array like ["this", "is", "a", "test", "phrase"], so you can use map to get a new array and for each element inside an array of its characters by using .split('') or .chars.

Upvotes: 6

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