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! + x5/5! - x7/7! ...
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
星期四, 12月 25, 2008
星期五, 12月 19, 2008
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.
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)
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)
Hint:
1.
fib(n)=fib(n-1)+fib(n-2)
2.
public static long fib(int n)
星期四, 12月 18, 2008
星期五, 12月 12, 2008
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);
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);
星期六, 11月 29, 2008
星期五, 11月 28, 2008
星期四, 11月 27, 2008
行動科技輔具冬令營 報名
星期二, 11月 25, 2008
星期五, 11月 21, 2008
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);
2 fractions should be equal to a fraction.
Use 1/2+1/3 as the test.
Hints:
Fraction f1, f2;
f1.add(f2);
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?
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?
星期三, 11月 19, 2008
星期一, 11月 17, 2008
星期五, 10月 31, 2008
Answer to Quiz
1. Write a Java program to calculate the trianular function as follows:
Cos(x)=1 - 2!/x 2 + 4!/x 4- 6!/x 6...
double power=1, fact=1, sum=0;
int k=-1;
for(int i=1; i<10; i++)
{
power=power*x;
fact=fact*i;
if(i%2==1)
{ k=k*(-1);
sum+=k*power/fact;
}
}
6. Write a complete Java program that uses a for loop to compute the sum of odd numbers between 1 and 25.
int evenSum=oddSum=0;
for(i=1; i<=25; i++)
{
if(i%2!=0)
oddSum+=i;
}
Cos(x)=1 - 2!/x 2 + 4!/x 4- 6!/x 6...
double power=1, fact=1, sum=0;
int k=-1;
for(int i=1; i<10; i++)
{
power=power*x;
fact=fact*i;
if(i%2==1)
{ k=k*(-1);
sum+=k*power/fact;
}
}
6. Write a complete Java program that uses a for loop to compute the sum of odd numbers between 1 and 25.
int evenSum=oddSum=0;
for(i=1; i<=25; i++)
{
if(i%2!=0)
oddSum+=i;
}
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?
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?
lab 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();
counter.reset();
counter.inc();
counter.inc();
counter.dec();
counter.output();
Quiz 10-31-2008
1. Write a Java program to calculate the trianular function as follows:
Cos(x)=1 - 2!/x 2 + 4!/x 4- 6!/x 6...
2. Write a Java program to calculate the sin function as follows:
sin(x)=x - 3!/x 3 + 5!/x5 - 7!/x7 ...
3. Write a Java program that can determine the minimum of any 4 numbers.
4. Write a Java program that can determine the maximum of any 4 numbers.
5. Let i, j be two integers. Write a Java program to exchange their values. Please make sure you have good styles of making comments, naming variables, and indenting.
6. Write a complete Java program that uses a for loop to compute the sum of the odd numbers between 1 and 25.
7. Explain syntax errors and sematic errors.
8. Explain programming styles and naming conventions in Java.
9. What is Java Virtual Machine and Java Bytecode?
10. Explain Java's feature "Write once, run anywhere."
Cos(x)=1 - 2!/x 2 + 4!/x 4- 6!/x 6...
2. Write a Java program to calculate the sin function as follows:
sin(x)=x - 3!/x 3 + 5!/x5 - 7!/x7 ...
3. Write a Java program that can determine the minimum of any 4 numbers.
4. Write a Java program that can determine the maximum of any 4 numbers.
5. Let i, j be two integers. Write a Java program to exchange their values. Please make sure you have good styles of making comments, naming variables, and indenting.
6. Write a complete Java program that uses a for loop to compute the sum of the odd numbers between 1 and 25.
7. Explain syntax errors and sematic errors.
8. Explain programming styles and naming conventions in Java.
9. What is Java Virtual Machine and Java Bytecode?
10. Explain Java's feature "Write once, run anywhere."
星期五, 10月 24, 2008
Homework 10-24-2008
1. Write a program to generate the series 1, 1, 2, 3, 5, 8, 13, ...
The series has a property that the third number is the sum of the first and second numbers. For example, 2=1+1, 3=1+2, and 5=2+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
The series has a property that the third number is the sum of the first and second numbers. For example, 2=1+1, 3=1+2, and 5=2+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
參觀老師的新蘇格蘭遊記
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.
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.
Lab: Tax Calculation
Study Display 3.1. Based on the income tax rate in Taiwan,
calculate the income tax of a person whose annual income is 1,000,000 or 2,000,000.
calculate the income tax of a person whose annual income is 1,000,000 or 2,000,000.
星期五, 10月 03, 2008
Homework 10-3-2008
1. Complete Lab Keyboad processing
2. Complete Lab: Numerical Method
3. Do Project 4 in Chapter 2
4. Do Project 5 in Chapter 2
5. Do Project 6, in Chapter 2
6. Do Project 7, in Chapter 2
7. 完成 Lab: 增加回應功能
Due 10/24/2008 13:00
Lab Keyboard Input
Rewrite Display 2.6 using BufferedReader.
You need to import the following packages in the first place.
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
Change
Scanner keyboard= new Scanner(System.in);
into
BufferedReader keyboard= new BufferedReader(new InputStreamReader(System.in));
String inputString = keyboard.readLine();
Note the Main method needs IOException handling as follows:
public static void main (String[] args) throws IOException
You need to import the following packages in the first place.
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
Change
Scanner keyboard= new Scanner(System.in);
into
BufferedReader keyboard= new BufferedReader(new InputStreamReader(System.in));
String inputString = keyboard.readLine();
Note the Main method needs IOException handling as follows:
public static void main (String[] args) throws IOException
星期三, 10月 01, 2008
星期五, 9月 26, 2008
Homework 9-26-2008
1. Complete Lab String Processing.
2. Write a program that can reverse the order of an input string. For example, if you input "ab", it will output "ba". If you input "abcdefg", it should return "gfedcba".
2. Write a program that can reverse the order of an input string. For example, if you input "ab", it will output "ba". If you input "abcdefg", it should return "gfedcba".
Lab: String Processing
Do Project 5 of Chap. 1 on Page 56.
Write a program that starts with a line of text and then outputs that line of text with the first occurrence of "hate" changed to "love". For example, a possible sample output might be
The line of text to be changed is:
I hate you.
I have rephrased that line to read:
I love you.
Hint: You may consider use the methods: indexOf(A_String) and substring(Start, End) in your program.
Write a program that starts with a line of text and then outputs that line of text with the first occurrence of "hate" changed to "love". For example, a possible sample output might be
The line of text to be changed is:
I hate you.
I have rephrased that line to read:
I love you.
Hint: You may consider use the methods: indexOf(A_String) and substring(Start, End) in your program.
Lab: Simple Arithmetics
Write a Java program that displays the results of the expressions 15/4, 4/15, 15%4, 4%15. Calculate the values of these expressions manually to verify that the displayed values are correct.
Lab: Simple Calculation
Suppose you are a landscape architect who charges $5,000 per mile to landscape a highway, and suppose you know the length in feet of the high way you are working on. Write a Java program to calculate the price you charge when the length is 6000 and 4000, respectively.
Hint: There are 5280 feet in a mile.
Hint: There are 5280 feet in a mile.
星期五, 9月 19, 2008
Homework 9-19-2008
Due 9/26/2008 at 13:00
"tell me and I'll forget; show me and I may remember; involve me and I'll understand"
1. Explain bytecode, JVM
2. Explain class, object
3. Reading Assignments:
Read 1.1, 1.2, 1.3 of Textbook
4.1 Write a Java program as follows:
Let i=2;
Print i;
Print 2 * (i++);
Print i;
Ans: 2, 4, 3
4.2 Write a Java program as follows:
Let i=2;
Print i;
Print 2 * (++i);
Print i;
Ans: 2, 6, 3
4.3 Write a Java program as follows:
Let m=7, n=2;
Print (double) m/n;
Print m/ (double)n;
Ans: 3.5, 3.5
"tell me and I'll forget; show me and I may remember; involve me and I'll understand"
1. Explain bytecode, JVM
2. Explain class, object
3. Reading Assignments:
Read 1.1, 1.2, 1.3 of Textbook
4.1 Write a Java program as follows:
Let i=2;
Print i;
Print 2 * (i++);
Print i;
Ans: 2, 4, 3
4.2 Write a Java program as follows:
Let i=2;
Print i;
Print 2 * (++i);
Print i;
Ans: 2, 6, 3
4.3 Write a Java program as follows:
Let m=7, n=2;
Print (double) m/n;
Print m/ (double)n;
Ans: 3.5, 3.5
Lab 2: Java for Scientific Computation
Do Project 4 on Page 55. (3rd Edition)
Do Project 4 on Page 56. (2nd Edition)
Do Project 1 on Page 54. (1st Edition)
artificial sweetener 人工代糖(過量可以致癌)
diet soda pop 減肥可樂
lose weight 減肥
Do Project 4 on Page 56. (2nd Edition)
Do Project 1 on Page 54. (1st Edition)
artificial sweetener 人工代糖(過量可以致癌)
diet soda pop 減肥可樂
lose weight 減肥
星期四, 9月 11, 2008
Let's start blogging
1. 至 http://www.blogger.com 申請, 請以你的學號 (s開頭) 申請免費帳號。
2. 張貼你的部落格的第一篇文章。一小段歡迎詞，或是簡短自我介紹，或是你最喜歡的事物與最不喜歡的事物，都可以。
3. 建立一個連結到課程網站 http://javaatcycu.blogspot.com/
建議你使用右上角"自訂"功能，新增一個區塊。一個區塊內可以置放多個連結。
4. 日後請將你的隨堂練習與作業寫在你的 blog, 然後到
Homework 或 Lab 的Comment 登錄作業blog網址就可以了.
請勿將整個作業直接寫在老師部落格的Comment處。
5. 尊重智慧財產權，引用他人文章須註明出處。並且應該合乎學術常規，以合理的方式引用。
How to insert a link at the following comment, please use the following HTML code.
2. 張貼你的部落格的第一篇文章。一小段歡迎詞，或是簡短自我介紹，或是你最喜歡的事物與最不喜歡的事物，都可以。
3. 建立一個連結到課程網站 http://javaatcycu.blogspot.com/
建議你使用右上角"自訂"功能，新增一個區塊。一個區塊內可以置放多個連結。
4. 日後請將你的隨堂練習與作業寫在你的 blog, 然後到
Homework 或 Lab 的Comment 登錄作業blog網址就可以了.
請勿將整個作業直接寫在老師部落格的Comment處。
5. 尊重智慧財產權，引用他人文章須註明出處。並且應該合乎學術常規，以合理的方式引用。
注意事項
a. blog需正確設定時區顯示時間 。
b. 請測試他人可否留言(comment)。以方便留下回應意見。
How to insert a link at the following comment, please use the following HTML code.
星期一, 6月 16, 2008
中原大學電子系輔具科技夏令營 2008
你想過你正在學的電子專業可以為弱勢的人服務嗎？你想多了解無線行動運算與服務運算最新趨勢嗎？
邀請熱情的妳/你參加中原大學電子系輔具科技夏令營 2008，結合先端科技為弱勢服務，就從這裡開始。
報名：請在意見區寫上姓名即可。
邀請熱情的妳/你參加中原大學電子系輔具科技夏令營 2008，結合先端科技為弱勢服務，就從這裡開始。
報名：請在意見區寫上姓名即可。
Quiz 4
1. Write a Java program to calculate the trianular function as follows:
Cos(x)=1 - 2!/x 2 + 4!/x4 - 6!/x6 ...
2. Write a Java program to calculate the sin function as follows:
sin(x)=x - 3!/x 3 + 5!/x5 - 7!/x7 ...
3. Design a non-static method that can compute the product of complex numbers. You must first define Complex class then write a demo program to verify the class program.
4. Design a static method that can compute the product of complex numbers. You must first define Complex class then write a demo program to verify the class program.
5. Let i, j be two integers. Write a Java program to exchange their values. Please make sure you have good styles of making comments, naming variables, and indenting.
6. Write a complete Java program that uses a for loop to compute the sum of the even numbers between 1 and 25.
7. Explain API and ADT.
8. Explain programming styles and naming conventions
Cos(x)=1 - 2!/x 2 + 4!/x4 - 6!/x6 ...
2. Write a Java program to calculate the sin function as follows:
sin(x)=x - 3!/x 3 + 5!/x5 - 7!/x7 ...
3. Design a non-static method that can compute the product of complex numbers. You must first define Complex class then write a demo program to verify the class program.
4. Design a static method that can compute the product of complex numbers. You must first define Complex class then write a demo program to verify the class program.
5. Let i, j be two integers. Write a Java program to exchange their values. Please make sure you have good styles of making comments, naming variables, and indenting.
6. Write a complete Java program that uses a for loop to compute the sum of the even numbers between 1 and 25.
7. Explain API and ADT.
8. Explain programming styles and naming conventions
星期一, 6月 09, 2008
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).
Hint: You may study Display 5.14 to get some ideas.
Hint: You may study Display 5.14 to get some ideas.
Lab Static method
Define a Complex class with a static method for computing complex addition. Use (2+3i)+(4+5i) in your test.
星期二, 6月 03, 2008
星期一, 6月 02, 2008
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);
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);
Quiz 6-2
1. 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.
2. Define a Complex class with complex addition.
3. What is Abstract Data Type (ADT)?
4. What is "Overloading"? Why is it useful?
5. 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.
6. Design a method that can compute the vector inner product. You must define Vector class in the first place. Write a demo program to verify your program works.
2. Define a Complex class with complex addition.
3. What is Abstract Data Type (ADT)?
4. What is "Overloading"? Why is it useful?
5. 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.
6. Design a method that can compute the vector inner product. You must define Vector class in the first place. Write a demo program to verify your program works.
星期一, 5月 26, 2008
Lab ADT, accessor, mutator
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.
The methods should include an access and a mutator.
星期一, 5月 19, 2008
Homework 5-19-2008
1. Do Temperature Project, which is Project 7 (3rd, 2nd ed.) or Project 3 (1st ed.).
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);
2 fractions should be equal to a fraction.
Use 1/2+1/3 as the test.
Hints:
Fraction f1, f2;
f1.add(f2);
星期一, 4月 28, 2008
No classes on May 5 and May 12
I am presenting 2 papers at IEEE ISWPC, Santorini, Greece. Therefore, there will be no class on May 5 & May 12.
Conference dates: May 7~9, 2008
Conference dates: May 7~9, 2008
lab 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();
counter.reset();
counter.inc();
counter.inc();
counter.dec();
counter.output();
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?
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?
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?
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?
星期一, 4月 14, 2008
4-21-2004 不上課
Due to the midterm week, we will not meet on Apr. 21. Wish you good luck!
ps. 4-21-2008 沒有 homework.
ps. 4-21-2008 沒有 homework.
Partial Answer to Quiz 2
Partial solutions: The following solutions are not complete Java programs. They are kept brief to illustrate the main ideas of the complete programs.
Problem 1:
1. Write a Java program to calculate the trianular function as follows:
Cos(x)=1 - 2!/x 2 + 4!/x4 - 6!/x6 ...
double power=1, fact=1, sum=0;
int k=-1;
for(int i=1; i<10; i++)
{
power=power*x;
fact=fact*i;
if(i%2==1)
{ k=k*(-1);
sum+=k*power/fact;
}
}
Write a complete Java program that uses a for loop to compute the sum of the even numbers and the sum of the odd numbers between 1 and 50.
int evenSum=oddSum=0;
for(i=1; i<=50; i++)
{
if(i%2==0)
evenSum=evenSum+i;
else
oddSum+=i;
}
Problem 1:
1. Write a Java program to calculate the trianular function as follows:
Cos(x)=1 - 2!/x 2 + 4!/x4 - 6!/x6 ...
double power=1, fact=1, sum=0;
int k=-1;
for(int i=1; i<10; i++)
{
power=power*x;
fact=fact*i;
if(i%2==1)
{ k=k*(-1);
sum+=k*power/fact;
}
}
Write a complete Java program that uses a for loop to compute the sum of the even numbers and the sum of the odd numbers between 1 and 50.
int evenSum=oddSum=0;
for(i=1; i<=50; i++)
{
if(i%2==0)
evenSum=evenSum+i;
else
oddSum+=i;
}
Quiz 4-14-2008
There are 3 problem each with its own marks. Total above 75 marks is considered as PASS.
1. (50) Write a Java program to calculate the trianular function as follows:
Cos(x)=1 - 2!/x 2 + 4!/x4 - 6!/x6 ...
2. (30)
Write a complete Java program that uses a for loop to compute the sum of the even numbers and the sum of the odd numbers between 1 and 50.
3. (20) Rewrite the following for loop using a while expression.
int Sum=0;
for(i=0; i<=10; i++)
Sum=Sum+i;
星期一, 4月 07, 2008
Average income by gender
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.
Without any change made to your program, your program should be able to process a new set of data, such as follows:
M 52,000
M 35,000
F 48,000
M 33,000
F 75,000
F 110,000
F 90,000
M 30,100
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.
Without any change made to your program, your program should be able to process a new set of data, such as follows:
M 52,000
M 35,000
F 48,000
M 33,000
F 75,000
F 110,000
F 90,000
M 30,100
Lab Fibonacci numbers
Do Project 3.3 (1st ed.) or Project 6 (2nd ed. & 3rd ed.) Fibonacci numbers.
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
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
星期一, 3月 24, 2008
Homework 3-24-2008
1. 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.
2. Write a program to generate the series 1, 1, 2, 3, 5, 8, 13, ...
The series has a property that the third number is the sum of the first and second numbers. For example, 2=1+1, 3=1+2, and 5=2+3.
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.
2. Write a program to generate the series 1, 1, 2, 3, 5, 8, 13, ...
The series has a property that the third number is the sum of the first and second numbers. For example, 2=1+1, 3=1+2, and 5=2+3.
Lab Finding the max of three numbers
Write a program to decide the max number of the three input number.
Lab: Tax Calculation
Study Display 3.1. Based on the income tax rate in Taiwan,
calculate the income tax of a person whose annual income is 1,000,000 or 2,000,000.
calculate the income tax of a person whose annual income is 1,000,000 or 2,000,000.
Quiz 3-24-2008
1. Let i, j be two integers. Write a Java program to exchange their values. Please make sure you have good styles of making comments, naming variables, and indenting.
2. The identifier StreamReader is normally abbreviated as SR in programming language C. However, Java programmers normally do not use abbreviations for identifiers. What are the advantages and disadvantages of not using abbreviations?
3. a. What is "self-documenting"?
b. What is the purpose of "Unicode"? Does Java use it?
4. Give an example of "logic error"
2. The identifier StreamReader is normally abbreviated as SR in programming language C. However, Java programmers normally do not use abbreviations for identifiers. What are the advantages and disadvantages of not using abbreviations?
3. a. What is "self-documenting"?
b. What is the purpose of "Unicode"? Does Java use it?
4. Give an example of "logic error"
星期一, 3月 17, 2008
Lab Keyboard input
Rewrite Display 2.6 using BufferedReader.
You need to import the following packages in the first place.
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
Change
Scanner keyboard= new Scanner(System.in);
into
BufferedReader keyboard= new BufferedReader(new InputStreamReader(System.in));
String inputString = keyboard.readLine();
Note the Main method needs IOException handling as follows:
public static void main (String[] args) throws IOException
You need to import the following packages in the first place.
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;
Change
Scanner keyboard= new Scanner(System.in);
into
BufferedReader keyboard= new BufferedReader(new InputStreamReader(System.in));
String inputString = keyboard.readLine();
Note the Main method needs IOException handling as follows:
public static void main (String[] args) throws IOException
星期一, 3月 10, 2008
Homework 3-10-2008: String Processing
Do Project 5 of Chap. 1 on Page 56.
Write a program that starts with a line of text and then outputs that line of text with the first occurrence of "hate" changed to "love". For example, a possible sample output might be
The line of text to be changed is:
I hate you.
I have rephrased that line to read:
I love you.
Hint: You may consider use the methods: indexOf(A_String) and substring(Start, End) in your program.
Write a program that starts with a line of text and then outputs that line of text with the first occurrence of "hate" changed to "love". For example, a possible sample output might be
The line of text to be changed is:
I hate you.
I have rephrased that line to read:
I love you.
Hint: You may consider use the methods: indexOf(A_String) and substring(Start, End) in your program.
Lab: Simple Calculation
Suppose you are a landscape architect who charges $5,000 per mile to landscape a highway, and suppose you know the length in feet of the high way you are working on. Write a Java program to calculate the price you charge when the length is 6000 and 4000, respectively.
Hint: There are 5280 feet in a mile.
Hint: There are 5280 feet in a mile.
星期一, 3月 03, 2008
Homework 3-3-2008
Due 3/10/2008 at 18:50
"tell me and I'll forget; show me and I may remember; involve me and I'll understand"
1. Explain bytecode, JVM
2. Explain class, object
3. Reading Assignments:
Read 1.1, 1.2, 1.3 of Textbook
4.1 Write a Java program as follows:
Let i=2;
Print i;
Print 2 * (i++);
Print i;
Ans: 2, 4, 3
4.2 Write a Java program as follows:
Let i=2;
Print i;
Print 2 * (++i);
Print i;
Ans: 2, 6, 3
4.3 Write a Java program as follows:
Let m=7, n=2;
Print (double) m/n;
Print m/ (double)n;
Ans: 3.5, 3.5
"tell me and I'll forget; show me and I may remember; involve me and I'll understand"
1. Explain bytecode, JVM
2. Explain class, object
3. Reading Assignments:
Read 1.1, 1.2, 1.3 of Textbook
4.1 Write a Java program as follows:
Let i=2;
Print i;
Print 2 * (i++);
Print i;
Ans: 2, 4, 3
4.2 Write a Java program as follows:
Let i=2;
Print i;
Print 2 * (++i);
Print i;
Ans: 2, 6, 3
4.3 Write a Java program as follows:
Let m=7, n=2;
Print (double) m/n;
Print m/ (double)n;
Ans: 3.5, 3.5
Lab 2 Java for Scientific Computation
Do Project 4 on Page 55. (3rd Edition)
Do Project 4 on Page 56. (2nd Edition)
Do Project 1 on Page 54. (1st Edition)
artificial sweetener 人工代糖(過量可以致癌)
diet soda pop 減肥可樂
lose weight 減肥
Do Project 4 on Page 56. (2nd Edition)
Do Project 1 on Page 54. (1st Edition)
artificial sweetener 人工代糖(過量可以致癌)
diet soda pop 減肥可樂
lose weight 減肥
星期一, 2月 25, 2008
Homework 2-25-2008
Due 3/3/2008 at 18:50
1. Watch The Inside Story (Video), write your words on the development and inventor of Java.
2. List at least 5 applications of Java. You must provide the references you used. We recommend Google Search engine.
ps.
Lab: Start Blogging
1. 至 http://www.blogger.com 申請, 請以你的學號 (s開頭) 申請免費帳號。
2. 張貼你的部落格的第一篇文章。一小段歡迎詞，或是簡短自我介紹，或是你最喜歡的事物與最不喜歡的事物，都可以。
3. 日後請將你的隨堂練習與作業寫在你的 blog, 然後到
Homework 或 Lab 的Comment 登錄作業blog網址就可以了.
請勿將整個作業直接寫在老師部落格的Comment處。
4. 尊重智慧財產權，引用他人文章須註明出處。並且應該合乎學術常規，以合理的方式引用。
How to insert a link at the following comment, please use the following HTML code.
2. 張貼你的部落格的第一篇文章。一小段歡迎詞，或是簡短自我介紹，或是你最喜歡的事物與最不喜歡的事物，都可以。
3. 日後請將你的隨堂練習與作業寫在你的 blog, 然後到
Homework 或 Lab 的Comment 登錄作業blog網址就可以了.
請勿將整個作業直接寫在老師部落格的Comment處。
4. 尊重智慧財產權，引用他人文章須註明出處。並且應該合乎學術常規，以合理的方式引用。
注意事項
a. blog需正確設定時區顯示時間 。
b. 請測試他人可否留言(comment)。以方便留下回應意見。
How to insert a link at the following comment, please use the following HTML code.
星期五, 1月 11, 2008
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.
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)
Hint:
public static long factorial(int n)
lab recursive method
Write a recursive method to compute Fibonacci series.
Hint:
fib(n)=fib(n-1)+fib(n-2)
Hint:
fib(n)=fib(n-1)+fib(n-2)
星期二, 1月 08, 2008
星期五, 1月 04, 2008
Bonus: 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.
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.
星期四, 1月 03, 2008
星期三, 1月 02, 2008
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).
Hint: You may study Display 5.14 to get some ideas.
Hint: You may study Display 5.14 to get some ideas.
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