Entering Starfleet Academy
From Huben's Wiki
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== Investigating Your Tricorder == | == Investigating Your Tricorder == | ||
| − | * The first rule of investigating your Tricorder is to not activate the | + | * The first rule of investigating your Tricorder is to not activate the [http://en.wikipedia.org/wiki/Corbomite Corbomite Device]. |
* See that teeny little window? Make it bigger. What did you change? | * See that teeny little window? Make it bigger. What did you change? | ||
| − | * | + | * The x and y coodinates in your tricorder are all first quadrant, but with a twist. Discover the twist. What is it? |
* That delicate little rectangle can also be changed. How do you change its size and location? Look [http://docs.oracle.com/javase/6/docs/api/java/awt/Color.html here to see how to change the Color.] | * That delicate little rectangle can also be changed. How do you change its size and location? Look [http://docs.oracle.com/javase/6/docs/api/java/awt/Color.html here to see how to change the Color.] | ||
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== Challenges! == | == Challenges! == | ||
| − | + | * In a Fibonacci sequence, each term is the sum of the previous two terms. That's recursion: to find a term, we find the preceding two terms and add them. That breaks the problem into two simpler parts, calling itself to calculate each of the simpler parts. In algebra, we say fib(n) = fib(n-1) + fib(n-2). So when do we stop? We are told fib(1) = 1 and fib(0) = 0. The sequence is 0, 1, 1, 2, 3, 5, 8, 13.... | |
| − | spacing | + | ** Write a class Fibonacci with a main() that prints fib(6). |
| − | + | ** Write a method '''public static int fib(int n)'''. That method should return 1 if n is 1, and 0 if n is 0. Otherwise, it should return the sum of the preceding two Fibonacci numbers. | |
| − | + | * Change the spacing of the rectangles so that they are closer or further apart. | |
| + | * The rectangle shrink concentrically. Make them shrink eccentrically, to one corner or another. | ||
| + | * Can you make the rectangles change color as they shrink? | ||
