04:42 AM . Reply With Quote 07-18-2011,  04:59 AM #2 pbrockway2 Moderator Join Date Feb 2009 Location New Zealand Posts 4,115 Rep Power 10 Wikipeding infix yielded a link to a description of the shunting yard algorithm which might be useful. Reply With Quote 07-18-2011,  07:11 AM #3 JosAH Moderator Join