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)

Lab Modular Sorting

Write a sort method which takes a double array as parameter
and returns the sorted array. Call this method in a main program.

Hint: The lab is a rewriting of Lab Sorting
to make the sorting procedure a reusable method.

Lab Array

Study Display 6.1, and then write a program that can sort numbers in ascending order.

Lab: Static Method II

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

Lab Magic Parking Tower

A parking tower is out of order someday. If you park a Benz, you will end up with a Torben. Write a program to simulate this scenario. First create a class called CarParked which has a static method called outOfOrder. Name an object called yourCar, which happens to be a Benz. Your program should contain a class called CarParked and a test program called CarParkedDemo which test the method by CarParked.outOfOrder(yourCar).

Lab Static Method

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

Lab Math methods

Compute the following mathematical functions.

Math.round(3.2)
Math.round(3.6)
Math.floor(3.2)
Math.floor(3.6)
Math.ceil(3.2)
Math.ceil(3.6)

Lab Finding the max of three numbers

Write a static method that computes the maximum of three float numbers.

Homework 5-4-2009

Do Project 7 of Chapter 4.

Lab Java Constructor

Write constructors in the lab Fraction Addition.

Lab Method Overloading

依據Class definition 3，修改程式使其接受三種setDate

date1.setDate(1,2,2008);
date2.setDate("February",2, 2008);
date3.setDate(2008);

Homework 4-27-2009

Do project 2 of Chapter 4.

Lab ADT

Define a Complex class and write an object oriented program to compute (2+3i)+(4+5i) in Java.
The methods should include an access and a mutator.

Class definition 3

Do Display 4.7 (3rd, 2nd ed.) or 4.5 (1st ed.). Then use Display 4.8 to call 4.7.

Question
In Display 4.7, if the method setDate has the parameter as setDate(int month, int day, int year), what kind of changes should be made in its body of codes?

Homework 4-13-2009 Fraction Multiplication

Write a program to implement a method that can multiply 2 fractions. You will implement a class called Fraction consisting of a numerator and a denominator. The multiplication of
2 fractions should be equal to a fraction.
Use 1/2 * 1/3 as the test.

Hints:
Fraction f1, f2;
f1.multiply(f2);

lab Fraction equality test

Write a program to implement a method that can check whether 2 fractions are equal. You will implement a class called Fraction consisting of a numerator and a denominator. The equality test of 2 fractions should return a boolean value.

Use the following as the tests.

* 1/2, 2/4
* 5/6, 6/7


Hints:
Fraction f1, f2;
f1.equals(f2);

lab Fraction Addition

Write a program to implement a method that can do additions of 2 fractions. You will implement a class called Fraction consisting of a numerator and a denominator. The additions of
2 fractions should be equal to a fraction.
Use 1/2+1/3 as the test.

Hints:
Fraction f1, f2;
f1.add(f2);

Homework 3-30-2009: counter

Define a class called Counter whose objects count things. An object of this class records a count that is a nonnegative integer. Include methods to set the counter to 0, to increase the count by 1, and to decrease the count by 1. Include an accessor method that returns the current count value and a method that outputs the count to the screen. Write a program to test


counter.reset();
counter.inc();
counter.inc();
counter.dec();
counter.output();

lab class definition 2

Study Display 4.4 (2nd ed. and 3rd ed.) or Display 4.2 & Display 4.3 (1st ed.) and then
1. Comment out date.setDate(6, 17, year); by // date.setDate(6, 17, year);




2. At the next line below, add date.readInput();





3. Run the program again. Fix any problems you may encouter along the way.






4. At the last line of your program, add System.out.println(date.month);
and see what happens. Why?




因為 month 使用 private 宣告，因此只能被同一個 class 存取。

lab class definition

Study Display 4.1 and then do Self-Test Exercise 1.

Homework: 3/23/2009

Write a program to calculate average income by gender based on the following data, where F stands for female and M for male.

F 62,000
M 25,000
F 38,000
F 43,000
M 65,000
M 120,000
F 80,000
M 30,100

You should be able to allow users to type in a whole line such as F 80,000 followed by next line M 30,100.

Lab Cosine

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

Lab Fibonacci

List the first 100 numbers and the ratio of
a number to its previous number, such as 1/1 = 1, 2/1 = 2, 3/2 = 1·5, 5/3 = 1·666..., 8/5 = 1·6, 13/8 = 1·625, 21/13 = 1·61538....

Want to know more about Fibonacci number

Homework 3-16-2009

1. Project 7 of Chap. 3






2. Write a program to generate the following table of arithmetic expressions

1*1=1 1*2=2 1*3=3 ... 1*9=9
2*1=2 2*2=4 2*3=6 ... 2*9=19
...
9*1=9 9*2=18 9*3=27 ... 9*9=81

Lab Finding the max of a list of numbers

Based on your study of Display 3.8, write a code to find the max and min of a list of number.
For example, given 1,3,5, and9, the max is 9 and the min is 1.
Your program should be able to process a list of any length.

Lab Finding the max of three numbers

Write a program to decide the max number of the three input number.