Ellen Ning Zhao’s musing between sense and sensibility
Posted in computer science, drools, software engineering on May 25th, 2008
The puzzle
The participation rules
First of all, many thanks to the participants, all the people who are interested and I apologize for the delay of result delivery. A lot of things has happened in my life during last several months. My daily job has very little to do with Java or Rete-based rule engines now, and [...]
Posted in algorithm, computer science, drools, programming, software engineering on Aug 18th, 2007
The original puzzle
Participation Rules
The rule in the first sentence of the old man is obvious. The mathematician cannot decide the solution after he was told the second condition. This indicates that there are more than one triple of numbers whose products are 36 and sums are the same. The third condition tells that the [...]
Posted in algorithm, drools, logic, programming on Aug 18th, 2007
Start date: August 1st, 2008. Submission deadline: August 15th, 2008.
Please post your solution to: droolspuzzle@gmail.com
Participation Rules
Ages of the Sons
Difficulty level: settler
An old man asked a mathematician to guess the ages of his three sons.
Old man said: “The product of their ages is 36.”
Mathematician said: “I need more information.”
Old man said:”Over there you can see [...]
Posted in algorithm, computer science, drools, logic, programming, software engineering on Aug 18th, 2007
Drools Puzzles is a periodic puzzle-solving contest. Anybody can compete in a round except the puzzle poster himself. For now a problem-solving cycle is about 2 weeks. Puzzles are posted by the winner of last round. A participator can post her solution to
mailto:droolspuzzle@gmail.com
All solutions are evaluated after the deadline of a round, on a [...]
Posted in drools, programming, software engineering on Jul 20th, 2007
I have encountered questions like how to use rules in a typical JEE application in Seam forum. And there are some other questions on general application design too. I have been using Seam and Drools together and figured out a way which ties the business logic to entities in an ultimately flexible manner and this [...]
Purposive without Foresight
Ellen Ning Zhao’s musing between sense and sensibility
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