//Quiz1

class Quiz1{

public static void main(String[] args){

double y = 3;

double sum = 0;

for(int x = 1;x<=49;x++){

sum += (x/y);

y += 2;

}

//p'thery -> for(int x = 1;x<=49;sum += (x/y),x++,y += 2);

System.out.print(sum);

}

}

//Quiz2

xxxo

xxxoo

xxxooo

xxxoooo

oooooooo

ooooooooo

oooooooo

xxxoooo

xxxooo

xxxoo

xxxo

//Quiz3

class Quiz3{

public static boolean equalArrays(int a1[], int a2[]){

if(a1.length != a2.length){

return false;

}

for(int i = 0;i<a1.length;i++){

if(a1[i] != a2[i])

return false;

}

return true;

}

//just a test (no need to write in exam)

public static void main(String[] args){

int a1[] = {1,2,3};

int a2[] = {1,2,3,4};

System.out.print(equalArrays(a1,a2));

} }

//Quiz4

class Delivery{

private String deliveryNumber;

private int code;

private double weight;

private double fee;

Delivery(int year, int no, int code, double weight){

this.weight = weight;

this.code = code;

String dNo = "";

if(no>=1 & no<=9)

dNo = "000"+no;

else if(no<=99)

dNo = "00"+no;

else if(no<=999)

dNo = "0"+no;

else if(no<=9999)

dNo = ""+no;

deliveryNumber = ""+year+dNo;

if(code == 1){

if(weight<5)

fee = 10.00;

else if(weight<=20)

fee = 25.50;

else if(weight>20)

fee = 40.00;

}

else if(code == 2){

if(weight<5)

fee = 50.00;

else if(weight>=5)

fee = 100.00;

}

} //end of Delivery Constructor ^^

//Getters Method ^^

public String getDeliveryNumber(){

return deliveryNumber;

}

public int getCode(){

return code;

}

public double getWeight(){

return weight;

}

public double getFee(){

return fee;

}

//Setters Method ^^

public void setCode(int code){

this.code = code;

}

public void setWeight(double weight){

this.weight = weight;

}

public void setFee(double fee){

this.fee = fee;

}

//toString Method ^^

public String toString(){

return "Delivery Number : "+getDeliveryNumber()+

"\nCode : "+getCode()+

"\nWeight : "+getWeight()+

"\nFee : "+getFee();

}

}

import java.util.Scanner;

class TestDelivery{

public static void main(String[] args){

Scanner sc = new Scanner(System.in);

int dNo = 0;

int year = 0;

double weight = 0;

int code = 0;

do{

System.out.print("Enter Delivery Number : ");

dNo = sc.nextInt();

}

while(dNo<1 | dNo>9999);

do{

System.out.print("Enter Year : ");

year = sc.nextInt();

}

while(year<2001 | year > 2050);

do{

System.out.print("Enter Weight : ");

weight = sc.nextDouble();

}

while(weight < 0.10 | weight > 100);

do{

System.out.print("Enter Distance Code : ");

code = sc.nextInt();

}

while(code != 1 & code !=2);

Delivery dl1 = new Delivery(year,dNo,code,weight);

System.out.println(dl1); //revoke toString Method ^^

//Revoke Setters Method ^^

dl1.setCode(2);

dl1.setWeight(12.50);

dl1.setFee(50.50);

//Revoke Getters Method ^^

System.out.println("getDeliveryNumber() : "+dl1.getDeliveryNumber());

System.out.println("getCode(): "+dl1.getCode());

System.out.println("getWeight() : "+dl1.getWeight());

System.out.println("getFee() : "+dl1.getFee());

} }

//Quiz5

จำไม่ได้ค่ะ - -"

รู้แต่ว่าข้อแรกอ่ะ ไม่มีค่า เพราะจองแีรมไว้เฉยๆ ยังไม่ได้ init - -"

และก็มีข้อหลังๆ ที่หลอก มี int ตัวแปรในลูป เพราะฉะนั้นทุกๆ ครั้งที่วน ค่ามันก็จะเริ่มใหม่

และก็ข้อบนๆ ตัวเลขที่ประกาศใน loop for ออกนอกลูป for แล้วจะหายไปนะ ^^