Merge pull request #16 from TiagoRG/dev-tiagorg

1ano/2semestre/poo/out/production/poo/aula02/README.md

@@ -5,5 +5,14 @@
 * [Guião](https://github.com/TiagoRG/uaveiro-leci/tree/master/1ano/2semestre/poo/guides/POO-2021-aula02.pdf)
 * [Slides](https://github.com/TiagoRG/uaveiro-leci/tree/master/1ano/2semestre/poo/slides/POO_02_ControloFluxo.pdf)
 
+### Exercise List
+| Exercise Number | File Name                                                                                                                              | Exercise Number | File Name                                                                                                                                  |
+|-----------------|----------------------------------------------------------------------------------------------------------------------------------------|-----------------|--------------------------------------------------------------------------------------------------------------------------------------------|
+| 1               | [KmToMiles.java](https://github.com/TiagoRG/uaveiro-leci/blob/master/1ano/2semestre/poo/src/aula02/KmToMiles.java)                     | 6               | [SecsToHMS.java](https://github.com/TiagoRG/uaveiro-leci/blob/master/1ano/2semestre/poo/src/aula02/SecsToHMS.java)                         |
+| 2               | [CelciusToFahrenheit.java](https://github.com/TiagoRG/uaveiro-leci/blob/master/1ano/2semestre/poo/src/aula02/CelciusToFahrenheit.java) | 7               | [DistanceBetweenPoints.java](https://github.com/TiagoRG/uaveiro-leci/blob/master/1ano/2semestre/poo/src/aula02/DistanceBetweenPoints.java) |
+| 3               | [EnergyToHeatWater.java](https://github.com/TiagoRG/uaveiro-leci/blob/master/1ano/2semestre/poo/src/aula02/EnergyToHeatWater.java)     | 8               | [PythagoreanTheorem.java](https://github.com/TiagoRG/uaveiro-leci/blob/master/1ano/2semestre/poo/src/aula02/PythagoreanTheorem.java)       |
+| 4               | [Investment.java](https://github.com/TiagoRG/uaveiro-leci/blob/master/1ano/2semestre/poo/src/aula02/Investment.java)                   | 9               | [Countdown.java](https://github.com/TiagoRG/uaveiro-leci/blob/master/1ano/2semestre/poo/src/aula02/Countdown.java)                         |
+| 5               | [AverageSpeed.java](https://github.com/TiagoRG/uaveiro-leci/blob/master/1ano/2semestre/poo/src/aula02/AverageSpeed.java)               | 10              | [RealNumbers.java](https://github.com/TiagoRG/uaveiro-leci/blob/master/1ano/2semestre/poo/src/aula02/RealNumbers.java)                     |
+
 ---
 *Pode conter erros, caso encontre algum, crie um* [*ticket*](https://github.com/TiagoRG/uaveiro-leci/issues/new)

1ano/2semestre/poo/out/production/poo/tp_codecheck/tp02/Array1.md

@@ -0,0 +1,23 @@
+# 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;
+}
+```
+

1ano/2semestre/poo/out/production/poo/tp_codecheck/tp02/Strings1.md

@@ -0,0 +1,9 @@
+# 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         |

1ano/2semestre/poo/src/aula02/AverageSpeed.java

@@ -18,6 +18,8 @@ public class AverageSpeed {
         double d2 = UserInput.getPositiveNumber(sin);
 
         double vm = (d1 + d2) / ((d1 / v1) + (d2 / v2));
-        System.out.printf("Velocidade final da viagem: %fkm/h", vm);
+        System.out.printf("Velocidade final da viagem: %.2fkm/h", vm);
+
+        sin.close();
     }
 }

1ano/2semestre/poo/src/aula02/CelciusToFahrenheit.java

@@ -10,6 +10,8 @@ public class CelciusToFahrenheit {
         Scanner sin = new Scanner(System.in);
         double celcius = sin.nextDouble();
         double fahrenheit = 1.8*celcius+32;
-        System.out.printf("%fºC = %fºF", celcius, fahrenheit);
+        System.out.printf("%.2fºC = %.2fºF", celcius, fahrenheit);
+
+        sin.close();
     }
 }

1ano/2semestre/poo/src/aula02/Countdown.java

@@ -11,7 +11,11 @@ public class Countdown {
         System.out.print("N? ");
         int n = sin.nextInt();
         for (int i = n; i >= 0; i--) {
+            // If the statement before '?' is true then the expression before the ':' is used, else the expression after the ':' is used.
+            // In python: i + "\n" if i%10 == 0 else i + ","
             System.out.print(i%10 == 0 ? i + "\n" : i + ",");
         }
+
+        sin.close();
     }
 }

1ano/2semestre/poo/src/aula02/DistanceBetweenPoints.java

@@ -1,5 +1,7 @@
 package aula02;
 
+import utils.UserInput;
+
 import java.util.Scanner;
 
 // Solução do exercício 7
@@ -8,15 +10,15 @@ public class DistanceBetweenPoints {
     public static void main(String[] args){
         Scanner sin = new Scanner(System.in);
 
-        System.out.print("Coordenadas do ponto 1 (separadas por ','): ");
-        String[] p1 = sin.next().split(",");
-        System.out.print("Coordenadas do ponto 2 (separadas por ','): ");
-        String[] p2 = sin.next().split(",");
+        String[] p1 = UserInput.input(sin, "Coordenadas do ponto 1 (separadas por ','): ").split(",");
+        String[] p2 = UserInput.input(sin, "Coordenadas do ponto 2 (separadas por ','): ").split(",");
 
         double distance = Math.sqrt(
                 Math.pow(Double.parseDouble(p1[0]) - Double.parseDouble(p2[0]), 2) +
                 Math.pow(Double.parseDouble(p1[1]) - Double.parseDouble(p2[1]), 2));
 
-        System.out.printf("A distância entre os dois pontos é %f", distance);
+        System.out.printf("A distância entre os dois pontos é %.3f", distance);
+
+        sin.close();
     }
 }

1ano/2semestre/poo/src/aula02/EnergyToHeatWater.java

@@ -16,6 +16,8 @@ public class EnergyToHeatWater {
         System.out.print("Temperatura final da água (ºC)? ");
         double finalTemperature = sin.nextDouble();
         double energy = kgOfWater * (finalTemperature - initialTemperature) * 4184;
-        System.out.printf("Para aquecer %fkg de água de %fºC para %fºC, serão necessários %fJ de energia.", kgOfWater, initialTemperature, finalTemperature, energy);
+        System.out.printf("Para aquecer %.3fkg de água de %.2fºC para %.2fºC, serão necessários %.3fJ de energia.", kgOfWater, initialTemperature, finalTemperature, energy);
+
+        sin.close();
     }
 }

1ano/2semestre/poo/src/aula02/Investment.java

@@ -14,6 +14,8 @@ public class Investment {
         System.out.print("Taxa de juro mensal (%)? ");
         double tax = sin.nextDouble();
         double finalWallet = initialWallet * Math.pow(1 + tax/100, 3);
-        System.out.printf("O saldo final será de %f euros", finalWallet);
+        System.out.printf("O saldo final será de %.2f euros", finalWallet);
+
+        sin.close();
     }
 }

1ano/2semestre/poo/src/aula02/KmToMiles.java

@@ -12,6 +12,8 @@ public class KmToMiles {
         Scanner sin = new Scanner(System.in);
         double km = UserInput.getPositiveNumber(sin);
         double miles = km / 1.609;
-        System.out.printf("%fkm = %f miles", km, miles);
+        System.out.printf("%.3fkm = %.3f miles", km, miles);
+
+        sin.close();
     }
 }

1ano/2semestre/poo/src/aula02/PythagoreanTheorem.java

@@ -17,11 +17,10 @@ public class PythagoreanTheorem {
         double b = UserInput.getPositiveNumber(sin);
 
         double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
+        double angDeg = Math.acos(a / c) * 180 / Math.PI;
 
-        double cossin = a / c;
-        double angRad = Math.acos(cossin);
-        double angDeg = angRad * 180 / Math.PI;
+        System.out.printf("O comprimento da hipotenusa é %.2f e o valor do angulo entre o cateto A e a hipotenusa é %.2f°", c, angDeg);
 
-        System.out.printf("O comprimento da hipotenusa é %f e o valor do angulo entre o cateto A e a hipotenusa é %f°", MathTools.round(c, 2), MathTools.round(angDeg, 2));
+        sin.close();
     }
 }

1ano/2semestre/poo/src/aula02/RealNumbers.java

@@ -29,5 +29,7 @@ public class RealNumbers {
         }
 
         System.out.printf("Valor máximo: %f\nValor mínimo: %f\nMédia: %f\nTotal: %f", max, min, (float) sum/readNumbers, sum);
+
+        sin.close();
     }
 }

1ano/2semestre/poo/src/aula02/SecsToHMS.java

@@ -17,5 +17,7 @@ public class SecsToHMS {
         int hours = Math.round((float) (mins / 60));
         mins = mins % 60;
         System.out.printf("%d segundos no formato hh:mm:ss : %d:%d:%d", totalSecs, hours, mins, secs);
+
+        sin.close();
     }
 }

1ano/2semestre/poo/src/tp_codecheck/README.md

@@ -0,0 +1,6 @@
+# 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)

1ano/2semestre/poo/src/tp_codecheck/tp01/BankInterest.java

@@ -0,0 +1,59 @@
+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);
+   }
+}

1ano/2semestre/poo/src/tp_codecheck/tp01/Table.java

@@ -0,0 +1,28 @@
+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;
+   }
+}

1ano/2semestre/poo/src/tp_codecheck/tp01/Temperature.java

@@ -0,0 +1,29 @@
+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

1ano/2semestre/poo/src/tp_codecheck/tp02/Array1.md

@@ -0,0 +1,23 @@
+# 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;
+}
+```
+

1ano/2semestre/poo/src/tp_codecheck/tp02/NumberOfDays.java

@@ -0,0 +1,27 @@
+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);
+    }
+}

1ano/2semestre/poo/src/tp_codecheck/tp02/Numbers.java

@@ -0,0 +1,17 @@
+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]);
+        }
+    }
+}

1ano/2semestre/poo/src/tp_codecheck/tp02/Strings1.md

@@ -0,0 +1,9 @@
+# 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         |

1ano/2semestre/poo/src/tp_codecheck/tp02/Words.java

@@ -0,0 +1,12 @@
+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);
+    }
+}