test.rb

task :solution do 
  digits =  rand(100000..100000000).to_s.split(//)
  #digits = "283910".to_s.split(//)
  mSize, allResult = digits.size, []
  digits.each_with_index do |x, index|
  		temp = []
	  	index.to_i.upto(mSize) do |y|
	  			temp << digits[y].to_i
	  			if temp.size.eql? 5
	  				allResult << temp.join("")
	  				temp = []
	  				break	  				
	  			end
	  	end
 	end
   puts ""
   puts "Base Number:"
   puts digits.join()
   puts "-------"	
   puts "All Combinations:"
   puts allResult
   puts "-------"
   puts "Largest Number:"
   puts allResult.max
   puts ""
 end