在哈希中搜索大多数元音的字符串

Question

所以，假设我有一个充满字符串的哈希作为值。我如何创建一个方法来搜索哈希并返回其中元音最多的字符串？

Answer 1

我建议您使用Enumerable#max_by和String#count。

def most_vowel_laden(h)
  h.values.max_by { |str| str.count('aeiouAEIOU') }
end

keys = [1, 2, 3, 4, 5, 6]
h = keys.zip(%w| It was the best of times |).to_h
  #=> {1=>"it", 2=>"was", 3=>"the", 4=>"best", 5=>"of", 6=>"times"}
most_vowel_laden h
  #=> "times"

h = keys.zip(%w| by my dry fly why supercalifragilisticexpialidocious |).to_h
  #=> {1=>"by", 2=>"my", 3=>"dry", 4=>"fly", 5=>"why",
  #    6=>"supercalifragilisticexpialidocious"} 
most_vowel_laden h
  #=> "supercalifragilisticexpialidocious" 

可替换地，

def most_vowel_laden(h)
  h.max_by { |_,str| str.count('aeiouAEIOU') }.last
end

Answer 2

result = nil
max = 0

# hash is your hash with strings
hash.values.each do |value|
  vowels = value.scan(/[aeiouy]/).size

  if vowels > max
    max = vowels
    result = value
  end
end

puts result