arnab

require "pp"

class String
  def all_substrings
    substrs = []
    start_index, end_index = [0, self.length - 1]
    start_index.upto end_index do |i|
      i.upto end_index do |j|
        # puts "#{self}[#{i}, #{j}] => #{ss}"
        substrs << self[i..j]

arnab

#!/usr/bin/env ruby -wKU

players = "Parag
Arnab
Vinoth
Sreeram
Ajay
Nazeer
Swapnil
Sridhar

arnab

require "pp"

class TagManager
  def initialize(top_tags_to_keep)
    @all_tags = Hash.new(0)
    @top_tags = []
    @top_tags_to_keep = top_tags_to_keep
  end
  
  def search(tag)

arnab

# http://mathforum.org/dr.math/faq/faq.peasant.html
# http://en.wikipedia.org/wiki/Ancient_Egyptian_multiplication

module RussianPeasantMultiplication
  def russian_peasant_multiply(b)
    numbers_to_add = []
    a, b = [self, b].sort #So we have the smaller number as the first

    negative_operands = [a, b].select { |n| n < 0 }
    result_should_be_negative = negative_operands.size.odd? # or negative_operands.size == 1

arnab

animals = [
  { :name => 'Frog', :class => 'Amphibian' },
  { :name => 'Butterfly', :class => 'Arthropod' },
  { :name => 'Eagle', :class => 'Bird' },
  { :name => 'Seahorse', :class => 'Fish' },
  { :name => 'Dog', :class => 'Mammal' },
  { :name => 'Man', :class => 'Mammal' },
  { :name => 'Crocodile', :class => 'Reptile' },
]
# Note that Fish and Reptiles are missing from the following

arnab

def columnize(arr, columns)
  size_in_group = arr.size / columns
  if arr.size % columns != 0
    size_in_group += 1
  end
 
  arr_grouped = [ ]
  size_in_group.times do |m|
    columns.times do |i|
      arr_grouped[i] ||= []

arnab

    metrics_with_inputs = Revision.find(
      :all,
      :conditions => { :id => self.revisions.map { |r| r.id } },
      :select => 'revisions.metric, revisions.snap_date, revisions.updated_at,
        inputs.author, inputs.as_of_date, inputs.units',
      :joins => 'join inputs on inputs.revision_id = revisions.id',
      :order => 'revisions.metric, revisions.snap_date, revisions.updated_at'
    )