greglu

public class Timestamp {

	/**
	 * Convert the given date in hbase timestamp format.
	 * @param date to convert
	 * @return the timestamp
	 */
	public static long toHbaseTimestamp(Date date) {
		return ((date.getTime() / 1000) << 32) + ((date.getTime() % 1000) * 1000);
	}

greglu

hbase(main):051:0> get 'books', 'fe80a1eb-2b3c-4995-8630-4131ef4b4eb7'
COLUMN                       CELL                                                                             
 attribute:author            timestamp=5410348784985219840, value=\001Richard Matheson                        
 attribute:description       timestamp=5410348784985219840, value=\001The most clever and riveting vampire nov
                             el since Dracula.                                                                
 attribute:links             timestamp=5410348784985219840, value=--- []\n\n                                  
 attribute:title             timestamp=5410348784985219840, value=\001I Am Legend                             
 log:change                  timestamp=5410348784985219840, value=--- []\n\n                                  
5 row(s) in 0.0070 seconds

greglu

http://books.google.com/books?id=8lKyxS8_CNoC&lpg=PA196&ots=G-ZgzDfG_0&dq=pushdown%20automata%20complement%20of%20ww&pg=PA163#v=onepage&q=ww&f=false

greglu

max_function = ""

6.times do |i|
  6.times do |j|
    max_function << ((rand(2) == 1) ? " + " : " - ")
    max_function << "#{rand(20)}*x#{i+1}#{j+1}"
  end
end

puts ((max_function[0..2] == " + ") ? max_function[3..(max_function.size-1)] : max_function)