Discrete math - C / C++

zfareed

Can anyone suggest some resources (websites/books) to learn coding
discrete math problems?
I have a problem involving sets,relations and functions and even
though the logic is clear I dont know the syntax for inputting
relations as ordered pairs, testing for functions, compositions and
inverses etc.

Feb 10 '07 #1

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2075

Victor Bazarov

zf*****@umd.umi ch.edu wrote:

Can anyone suggest some resources (websites/books) to learn coding
discrete math problems?
I have a problem involving sets,relations and functions and even
though the logic is clear I dont know the syntax for inputting
relations as ordered pairs, testing for functions, compositions and
inverses etc.

What is your C++ question? Shouldn't you go to 'sci.math.*'?

V
--
Please remove capital 'A's when replying by e-mail
I do not respond to top-posted replies, please don't ask

Feb 10 '07 #2

Kai-Uwe Bux

zf*****@umd.umi ch.edu wrote:

Can anyone suggest some resources (websites/books) to learn coding
discrete math problems?
I have a problem involving sets,relations and functions and even
though the logic is clear I dont know the syntax for inputting
relations as ordered pairs, testing for functions, compositions and
inverses etc.

To model functions in C++, you can use std::map<>. To model relations, you
could use std::multiset<> . This assumes that you are mainly applying these
relations and functions in a forward fashion (first coordinate search is
fast, dependent variable search is linear). If you need a more symmetric
data structure, you can use two (multi)maps, one for the function/relation,
and one for its inverse. Adding a pair is done by the insert() member
function.

This might get you started. If you get stuck, post a piece of code that
demonstrates the problem.
Best

Kai-Uwe Bux

Feb 10 '07 #3

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