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double_cola.rb
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double_cola.rb
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#!/usr/bin/env ruby
###
# I liked this Kata because it used The Big Bang Theory characters.
#
# The best solution used a similar approach but divided by 2 down, which is far
# less code and more clever.
#
# @author Jonathan Bradley Whited
# @see https://www.codewars.com/kata/double-cola/ruby
# @rank 5 kyu
###
def whoIsNext(names,r)
clones = 1 # Number of clones (doubles) at this shift
shifts = 0 # Number of shifts done
while (s = shifts + (names.length * clones)) < r
shifts = s
clones *= 2
end
result = nil
# Go to r (shift) from current shifts
names.each do |name|
result = name
break if (shifts += clones) >= r
end
result
end
names = ['Sheldon','Leonard','Penny','Rajesh','Howard']
puts whoIsNext(names,1802) # Penny
puts whoIsNext(names,50) # Leonard
puts unless ARGV.empty?
ARGV.each do |arg|
puts "#{arg} => #{whoIsNext(names,arg.to_i)}"
end