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[POO] Removed tp_codecheck 

--> Didn't really have too much there and not worth keeping around
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Tiago Garcia 2023-05-31 09:26:38 +01:00
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6
1ano/2semestre/poo/src/tp_codecheck/README.md
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# Programação Orientada a Objetos
## Exercícios TP
### Resoluções para exercícios sugeridos nas aulas Teórico-Práticas
---
*Pode conter erros, caso encontre algum, crie um* [*ticket*](https://github.com/TiagoRG/uaveiro-leci/issues/new)

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1ano/2semestre/poo/src/tp_codecheck/tp01/BankInterest.java
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package tp_codecheck.tp01;
// Solução do exercício 2
import java.util.Scanner;
/**
This program updates an account balance, according to the table below:
Balance Interest Rate Charge
> $100,000.00 2.75 % $ 0.00
> $25,000.00 2.00 % $ 0.00
> $10,000.00 1.00 % $ 0.00
>= $0.00 0.00 % $ 0.00
< $0.00 0.00 % $ 25.00
and prints out the new balance.
*/
public class BankInterest
{
public static void main(String[] args)
{
// Define constants
final double HI_RATE = 2.75;
final double MD_RATE = 2.00;
final double LO_RATE = 1.00;
final double ZERO_RATE = 0.00;
final double DEB_CHG = -25.00;
final double HI_LIMIT = 100000.00;
final double MD_LIMIT = 25000.00;
final double LO_LIMIT = 10000.00;
final double ZERO_LIMIT = 0.00;
// Print prompt to enter a current balence
System.out.print("Enter current balance: ");
// Read balance
Scanner in = new Scanner(System.in);
double balance = in.nextDouble();
// Determine interest rate (or charge) based on current balance
// to compute new balance
// Your work here
double newBalance;
if (balance > HI_LIMIT)
newBalance = balance*(1+HI_RATE/100);
else if (balance > MD_LIMIT)
newBalance = balance*(1+MD_RATE/100);
else if (balance > LO_LIMIT)
newBalance = balance*(1+LO_RATE/100);
else if (balance < ZERO_LIMIT)
newBalance = balance+DEB_CHG;
else
newBalance = balance;
System.out.printf("%.2f\n", newBalance);
}
}

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1ano/2semestre/poo/src/tp_codecheck/tp01/Table.java
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package tp_codecheck.tp01;
// Solução do exercício 3
public class Table {
public static void main(String[] args) {
System.out.printf("%s | %s | %s | %s\n", "n", "Hn", "log n", "Hn - log n");
int n = 1;
while (n <= 1000000) {
double f1 = harmonic(n);
double f2 = Math.log((double)n);
System.out.printf("%d | %.3f | %.3f | %.9f\n", n, f1, f2, f1-f2);
n *= 2;
}
}
/**
* Computes the Harmonic number Hn = 1 + 1/2 + 1/3 + ... + 1/n.
*/
private static double harmonic(int n) {
double sum = 0;
for (int i = 1; i <= n; i++) {
sum += 1/(float)i;
}
return sum;
}
}

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1ano/2semestre/poo/src/tp_codecheck/tp01/Temperature.java
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package tp_codecheck.tp01;
// Solução do exercício 1
/*
This is a short Java program to convert
a temperature from Celsius to Fahrenheit.
*/
// You may want to import stuff here...
import java.util.Scanner;
public class Temperature {
// Create a Scanner to parse standard input:
private static Scanner sc = new Scanner(System.in);
public static void main(String[] args) {
// Put your code here
System.out.print("Celsius? ");
double celcius = sc.nextDouble();
double fahrenheit = 1.8*celcius+32;
System.out.printf("%f C = %f F\n", celcius, fahrenheit);
System.out.println("THE END");
}
}
// JMR 2023

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1ano/2semestre/poo/src/tp_codecheck/tp02/Array1.md
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# Exercícios de Arrays
## Ex1
```java
final int LENGHT = 100;
int[] a = new int[LENGHT];
// Code for filling a ommited
for (int = 99; i >= 0; i--)
{
System.out.print(a[i]);
if (i > 0) { System.out.print(', '); }
}
```
## Ex2
```java
int[] numbers = new int[100];
for (int k = 0; k < numbers.length; k++)
{
numbers[k] = k + 1;
}
```

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1ano/2semestre/poo/src/tp_codecheck/tp02/NumberOfDays.java
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package tp_codecheck.tp02;
import java.util.Scanner;
public class NumberOfDays {
public static void main(String[] args)
{
// Declare and initialize daysOfMonth
int[] daysOfMonth = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
Scanner in = new Scanner(System.in);
System.out.print("Month (1 - 12): ");
int month = in.nextInt();
System.out.print("Year: ");
int year = in.nextInt();
if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
// It's a leap year. Adjust the entry for February
daysOfMonth[1]+=1;
}
// Get the number of days in the given month
int days = daysOfMonth[month-1];
System.out.println("Number of days: " + days);
}
}

17
1ano/2semestre/poo/src/tp_codecheck/tp02/Numbers.java
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package tp_codecheck.tp02;
public class Numbers {
public static void main(String[] args) {
// Different arrays will be substituted here.
int[] values = { 3, 1, 4, 1, 5, 9 };
int[] newValues = new int[values.length/2];
for (int x = 0; x < values.length; x+=2) {
newValues[x/2] = values[x];
}
for (int i = 0; i < newValues.length; i++) {
System.out.println(newValues[i]);
}
}
}

9
1ano/2semestre/poo/src/tp_codecheck/tp02/Strings1.md
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# Tabela Exercício 1 de Strings
| Question | Answer |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|------------------|
| What is the length of the string below?<br>String str = "Java Program" | 12 |
| With str as defined above, give a call to the substring method that returns the substring "gram". | str.substring(8) |
| Use the string concatenation operator to change the string variable str to contain the string "Java Programming". | str += "ming" |
| What does the following statement sequence print?<br><br>String str = "Harry";<br>int n = str.length();<br>String mystery = str.substring(0, 1) + str.substring(n - 1, n);<br>System.out.println(mystery); | Hy |
| Consider the following statement sequence. If the user provides the input John Q. Public, what is printed? If an error occurs, type error.<br><br>Scanner in = new Scanner(System.in);<br>String first = in.next();<br>String last = in.next();<br>System.out.println(last + ", " + first); | Q., John |

12
1ano/2semestre/poo/src/tp_codecheck/tp02/Words.java
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package tp_codecheck.tp02;
import java.util.Scanner;
public class Words {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
String word = in.next();
word = word.charAt(word.length()-1) + word.substring(1, word.length()-1) + word.charAt(0);
System.out.println(word);
}
}

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1ano/2semestre/poo/src/tp_codecheck/tp03/part1/TrafficLight1.java
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package tp_codecheck.tp03.part1;
/**
A simulated traffic light.
*/
public class TrafficLight1
{
private String color;
private int reds;
/**
Constructs a green traffic light.
*/
public TrafficLight1()
{
this.color = "green";
this.reds = 0;
}
/**
Constructs a traffic light.
@param initialColor the initial color "green", "yellow", or "red"
*/
public TrafficLight1(String initialColor)
{
this.color = initialColor;
this.reds = initialColor == "red" ? 1 : 0;
}
/**
Moves this traffic light to the next color.
*/
public void next()
{
switch (this.color) {
case "red":
this.color = "green";
break;
case "green":
this.color = "yellow";
break;
case "yellow":
this.color = "red";
this.reds += 1;
break;
}
}
/**
Returns the current color of this traffic light.
@return the current color
*/
public String getColor()
{
return this.color;
}
/**
Counts how often this traffic light has been red.
@return the number of times this traffic light has been red
*/
public int getReds()
{
return this.reds;
}
}

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1ano/2semestre/poo/src/tp_codecheck/tp03/part1/TrafficLight2.java
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package tp_codecheck.tp03.part1;
/**
A simulated traffic light.
*/
public class TrafficLight2
{
private int steps;
/**
Constructs a green traffic light.
*/
public TrafficLight2()
{
this.steps = 0;
}
/**
Constructs a traffic light.
@param initialColor the initial color "green", "yellow", or "red"
*/
public TrafficLight2(String initialColor)
{
switch (initialColor) {
case "green":
this.steps = 0;
break;
case "yellow":
this.steps = 1;
break;
case "red":
this.steps = 2;
break;
}
}
/**
Moves this traffic light to the next color.
*/
public void next()
{
steps++;
}
/**
Returns the current color of this traffic light.
@return the current color
*/
public String getColor()
{
int rem = (this.steps + 1) % 3;
if (rem == 0)
return "red";
else if (rem == 1)
return "green";
else
return "yellow";
}
/**
Counts how often this traffic light has been red.
@return the number of times this traffic light has been red
*/
public int getReds()
{
return (this.steps + 1) / 3;
}
}

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1ano/2semestre/poo/src/tp_codecheck/tp03/part2/RentalCar.java
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package tp_codecheck.tp03.part2;
public class RentalCar {
private boolean rented;
private static int rentedCount = 0;
private static int availableCount = 0;
/**
* Constructs a rental car.
*/
public RentalCar() {
// your work here
rented = false;
RentalCar.availableCount++;
}
/**
* Get number of cars available.
*
* @return count of cars that are available
*/
public static int numAvailable() {
// your work here
return RentalCar.availableCount;
}
/**
* Get number of cars rented.
*
* @return count of cars that are rented
*/
public static int numRented() {
// your work here
return RentalCar.rentedCount;
}
/**
* Try to rent this car.
*
* @return true if the car was successfully rented, false if it was already
* rented
*/
public boolean rentCar() {
// your work here
if (this.rented) {
return false;
} else {
this.rented = true;
RentalCar.rentedCount++;
RentalCar.availableCount--;
return true;
}
}
/**
* Return rented car.
*
* @return true if the car was previously rented and is now returned,
* false if it was not previously rented
*/
public boolean returnCar() {
// your work here
if (this.rented) {
this.rented = false;
RentalCar.rentedCount--;
RentalCar.availableCount++;
return true;
} else {
return false;
}
}
}