Quiz 12-26-2008

1. Design a non-static method that can compute the addition of fractions. You must first define Fraction class then write a demo program to verify the class program.

2. Design a static method that can compute the addition of fractions. You must first define Fraction class then write a demo program to verify the class program.

3. 列舉至少三個Java程式的風格

4. 列舉至少三個Java記憶體管理的特性

5. Write a Java program to solve the Hanoi Tower Problem.

6. Write a Java program to solve the Hanoi Tower Problem.

7. Explain ADT (Abstract Data Type).

8. Explain API (Application Programming Interface).

9. Write a Java program to calculate the sin function as follows:
sin(x)=x - x ³/3! + x^5/5! - x^7/7! ...

10. Write a Java program to calculate the cosine function as follows:
Cos(x)=1 - x ² /2!+ x ⁴/4!- x ^6/6!...

11. 一個Java 物件使用多少個Byte記憶體? 為什麼？

12. 請解釋　Garbage Collector 的作用。試舉例說明。

13. 請解釋　Overloading ，舉例說明何時可能會用到　Overloading

14. 請解釋　Constructor ，舉例說明何時可能會用到　Constructor

Lab Hanoi Tower

The pseudocode for Hanoi Tower is as follows:

solve(N, Src, Aux, Dst)
if N is 0 return
solve(N-1, Src, Dst, Aux)
Move N from Src to Dst
solve(N-1, Aux, Src, Dst)


Write the Java program based on the pseudocode in the above.

Lab Factorial

Write a Java program that computes N! where N is a positive integer.

Hint:

public static long factorial(int n)

Lab Recursive Method

Write a recursive method to compute Fibonacci series.

Hint:

1.
fib(n)=fib(n-1)+fib(n-2)

2.
public static long fib(int n)

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Quiz 2: 12/26/2008

Format: closed book
Running time: 45 min.
Scope: Chap.4~Chap. 5, Chap. 11

Lab Static Method

Define a Complex class with a static method for computing complex addition. Use (2+3i)+(4+5i) in your test.

Lab Java Constructor

Use Display 4.14 to call 4.13 (2nd ed.) or
Display 4.12 to call 4.11 (1st ed.).

After you finish the above, try the following

Date birthday = new Date("Jan",1,2000);
birthday.Date("Feb",1,2000);
birthday.setDate("Feb",1,2000);
birthday=new Date("Mar",1,2000);