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Counting Subsets and the Binomial Theorem

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The Power Set on a finite set S, denoted P(S), has 2|S| elements. Similarly enough, Sum_{i}^{n} C(n, i) = 2n...
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The Importance of Multiplicative Functions

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I came across this thread today, where the OP was attempting to solve a problem regarding counting divisors. Here, the use of a multiplicative function provided means to optimize when counting divisors for larger numbers.

First, let's define two terms- multiplicative and completely multiplicative. A multiplicative function f...
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Which Math Course(s) Should I Take?

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There are a lot of threads asking about math courses to take, so I figured it was time to put together a blog entry on this. I'm making the assumption that you, the reader, are some sort of an IT or CS major, so I'm starting at Calculus and moving my way up. This isn't a complete or comprehensive list of math courses commonly available...
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Graph Theory Love- Four Color Theorem

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This semester, I am taking a class called Applied Combinatorics, which has a large Graph Theory component. Today, my professor was introducing planar graphs. We got sidetracked on the Four Color Theorem, which states that a planar graph requires no more than four distinct colors so that no adjacent faces have the same color. I have been working on...
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Q&A With the Experts- Answers

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You asked and our experts answered! Check out the answers to the Q&A with the Experts!

http://www.dreaminco...826-qa-answers/
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Getting Even Better at Programming Java

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If you haven't checked out my thread Getting Better at Programming Java yet (or even if you have), you should check it out (again). It has now been updated with links to relevant tutorials on Dream.in.Code for most of the topics. If you have a tutorial that you feel belongs on the list, shoot me a PM and we'll look at placing it!

I...
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Successful Credit By Exam

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So a couple weeks back, I was ranting about my Data Structures I class. I heard back today that my credit by exam was successful. In order to complete my credit by exam, I had to complete a program and a written test, getting a 70% or greater on both. The program was representative of the major project taking about half of the semester. I had to...
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I Have Installed Visual Studio

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Tonight, I installed Visual Studio 2010 Pro as part of my student software bundle. I have done nothing interesting with it, or even really used it. However, I now have Microsoft development tools on my computer. This is big. Not just big- huge. It will get even bigger if I start *gasp* learning Microsoft's .NET languages. C# is the most...
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Academia Doesn't Understand What Industry Needs

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Today I had my first lab for Data Structures I, the same course I am working to test out of and drop. It was brutal. I wanted to beat someone. The assignment was straight-forward. Design a Computer class with three fields, the standard getter/setter methods, and a toString() method basically. The JUnit was new for me, but pretty easy. In a matter...
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The Excuse "I'm Just a Beginner" Is No Longer Valid

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Today I came across this thread, where the OP refuses to do any critical thinking and continues to ignore the correct advice presented to her. When called on it, she uses the excuses of "I'm a beginner" and "but my professor didn't teach me that."


In this case, the instructor actually spelled out selection sort in...

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