Mathematic problem with backtrack

*To*: mathgroup at smc.vnet.net*Subject*: [mg25356] Mathematic problem with backtrack*From*: "Ryo Mulyono" <ryo00 at n2mail.com>*Date*: Sat, 23 Sep 2000 03:36:41 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

I have a question about math with backtrack. I have number 1,2,3,4,5,6,7,8,9 and operand +,-,*,/ also an input. with number and operand try to make an mathematic expresion so the result equal to input, use backtrack algorithm. example input:39 so the expression is 12+34-5+6-7+8-9 the expression can be more then one and the number must in position cannot be 21,54 and etc. Thank you What are you N2? Choose from 150 free e-mail addresses. http://www.n2mail.com