How to search for the longest word in the string

Question

  def my_inject(*args)
    return yield false if args.empty? && !block_given?

    case args.length
    when 1 then args.first.is_a?(Symbol) ? sym = args.first : result = args.first
    when 2 then result = args.first
                sym = args.last
    end


    result ||= 0
    my_each { |x| result = block_given? ? yield(result, x) : result.send(sym, x) }

    result
  end

What can I add to this code to make it search for the longest word in Array of strings and were add it?

score 3 · Accepted Answer · answered Aug 19 '20 at 18:48

3

string.split(" ")
      .max_by(&:length)

See Enumerable#max_by.

answered Aug 19 '20 at 18:48

max

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Just for fun, I'll point out that some natural languages don't separate words with spaces. Check out questions like https://stackoverflow.com/questions/3797746/how-to-do-a-python-split-on-languages-like-chinese-that-dont-use-whitespace if you're curious. :) – Jared Beck Aug 19 '20 at 22:26

score 1 · Answer 2 · answered Aug 19 '20 at 17:50

1

What can I add to this code to make it search for the longest word in a string

"this is a test of the emergency broadcast system".split(' ').sort {|x,y| y.length <=> x.length}.first

To break this down we:

assign a sentence as a string
split that string into words
sort each word by comparing its length with the previous word's length
take the first result

More information on sorting in Ruby at https://apidock.com/ruby/v2_5_5/Enumerable/sort

answered Aug 19 '20 at 17:50

Ben Simpson

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I am sorry for this stupid question first not a string it's Array of strings and where to add it ? because it's not working – Sanad Aug 19 '20 at 18:57
Hi @Sanad, can you provide example. Whether you are trying to get the max string from an array of string like ` ['abc' , 'abcd', 'abcdef']` or its just a string like `'this is a string'` if its an array you can probably use `arr.max_by(&:length)` or if its a string you can probably use `str.split(' ').max_by(&:length)` – Syed Samiuzzaman Aug 20 '20 at 04:40

score 0 · Answer 3 · answered Aug 19 '20 at 20:36

0

Some assumptions:

Each array item only contains one word
You only want the longest word returned, not the position

words = %w[tiny humungous antidisestablishmentarianism medium]

puts words.max_by(&:length)

answered Aug 19 '20 at 20:36

nullTerminator

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How to search for the longest word in the string

3 Answers3