Find most common string in an array

Question

I have this array, for example (the size is variable):

   x = [\"1.111\", \"1.122\", \"1.250\", \"1.111\"]

and I need to find the most comm

Answer 1

It will return most popular value in array

x.group_by{|a| a }.sort_by{|a,b| b.size<=>a.size}.first[0]

IE:

x = ["1.111", "1.122", "1.250", "1.111"]
# Most popular
x.group_by{|a| a }.sort_by{|a,b| b.size<=>a.size}.first[0]
#=> "1.111
# How many times
x.group_by{|a| a }.sort_by{|a,b| b.size<=>a.size}.first[1].size
#=> 2