How to sort a hash by value in descending order and output a hash in ruby?
- by tipsywacky
output.sort_by {|k, v| v}.reverse
and for keys
h = {"a"=>1, "c"=>3, "b"=>2, "d"=>4}
=> {"a"=>1, "c"=>3, "b"=>2, "d"=>4}
Hash[h.sort]
Right now I have these two. But I'm trying to sort hash in descending order by value so that it will return
=> {"d"=>4, "c"=>3, "b"=>2, "a"=>1 }
Thanks in advance.
Edit:
let me post the whole code.
def count_words(str)
# YOUR CODE HERE
output = Hash.new(0)
sentence = str.gsub(/,/, "").gsub(/'/,"").gsub(/-/, "").downcase
words = sentence.split()
words.each do |item|
output[item] += 1
end
puts Hash[output.sort_by{ |_, v| -v }]
return Hash[output.sort_by{|k, v| v}.reverse]
end
