big_data.rb

#!/usr/bin/env ruby
#coding: utf-8
require 'pp'
word = {}
tweets = []
final = {}

File.open("mapreduce.csv", "r:windows-1251:utf-8").each_line do |line|
  line = line.split(",")
  word[line[0]] = line[2]
end
	
File.open("tweet.csv").each_line do |line|
  line = line.split(",")
  tweets.push(line[1])
end

tweets.each do |tweet|
  tweetsplitted = tweet.split(" ")
  count = 0 
  tweetsplitted.each do |w|
    count += word[w].to_i
  end
  final[tweet] = count
end

pp(final.sort_by {|_key, value| value})