santanub

  ## Problem no 6 recursion
class Algo
  def count_binary_count_rec(n)
    if n == 1
      return 2 ** n
    elsif n.zero?
      return 1
    else
      count_binary_count_rec(n-1) + count_binary_count_rec(n-2)
    end

santanub

Installing elasticsearch
1. Visit https://www.elastic.co/downloads
2. Download zip version. Unzip it. 
3. Run bin/elasticsearch
4. Visit http://localhost:9200/. If it return status 200, it is succesfully installed.

Elasticsearch uses JavaScript Object Notation, or JSON, as the serialization format for documents. JSON serialization is
supported by most programming languages, and has become the standard format used by the NoSQL movement. It is simple,
concise, and easy to read.