polish

.vscode/settings.json

@@ -3,6 +3,9 @@
     "java.project.outputPath": "bin",
     "java.project.referencedLibraries": [
         "lib/**/*.jar"
+    ],
+    "cSpell.words": [
+        "recursivity"
     ]
     
 }

src/lab13_streams/BMPWriter.java

@@ -161,7 +161,5 @@ public class BMPWriter {
 	 * @param input
 	 * @return
 	 */
-	static private short convertToLED(short input) {
+	//static private short convertToLED(short input) {return (short) (((input & 0xff) << 8) | ((input & 0xff00) >> 8));}
-		return (short) (((input & 0xff) << 8) | ((input & 0xff00) >> 8));
-	}
 }

src/lab13_streams/SimpleGraphics.java

@@ -2,7 +2,6 @@ package lab13_streams;
 
 import java.awt.Color;
 import java.awt.Font;
-import java.awt.Graphics;
 import java.awt.Graphics2D;
 import java.awt.Polygon;
 import java.awt.RenderingHints;

src/lab13_streams/SimpleGraphicsBitmap.java

@@ -1,8 +1,6 @@
 package lab13_streams;
 
 import java.awt.image.BufferedImage;
-import java.io.File;
-import java.io.IOException;
 
 import javax.imageio.ImageIO;
 

src/lab14_recursivity/HanoiTower.java

@@ -0,0 +1,16 @@
+package lab14_recursivity;
+
+public class HanoiTower {
+
+    public static void main(String[] args) {
+        hanoi(3, 'a', 'b', 'c');
+    }
+
+    public static void hanoi(int n, char start, char aux, char end){
+        if (n != 0){
+            hanoi(n-1, start, end, aux);
+            System.out.println("Move disk " + n + " from " + start + "->" + end);
+            hanoi(n-1, aux, start, end);
+        }
+    }
+}

src/lab14_recursivity/TestLogo.java

@@ -0,0 +1,31 @@
+package lab14_recursivity;
+
+import java.awt.Point;
+import hevs.graphics.TurtleGraphics;
+
+public class TestLogo {
+
+    private static TurtleGraphics turtle;
+    private static Point startPosition;
+
+    public static void main(String[] args) {
+        turtle = new TurtleGraphics(400, 400, "Test logo");
+        startPosition = turtle.getPosition();
+        turtle.penDown();
+        
+        polygoneGenerator(100, 120);
+        polygoneGenerator(100, 90);
+        polygoneGenerator(100, 72);
+        turtle.penUp();
+        turtle.forward(50);
+        turtle.penDown();
+        startPosition = turtle.getPosition();
+        polygoneGenerator(5, 5);
+    }
+
+    static void polygoneGenerator(int forward, int angle){
+        turtle.forward(forward);
+        turtle.turn(angle);
+        if (!turtle.getPosition().equals(startPosition)) polygoneGenerator(forward, angle);
+    }
+}

src/lab14_recursivity/Tree.java

@@ -0,0 +1,46 @@
+package lab14_recursivity;
+
+import java.awt.Point;
+
+import hevs.graphics.TurtleGraphics;
+
+public class Tree {
+
+    private static TurtleGraphics turtle;
+    private static final int height = 500;
+    private static final int weight = 500;
+    public static void main(String[] args) {
+        turtle = new TurtleGraphics(weight, height, "Tree");
+        turtle.forward(-(height/2)+20);
+        turtle.penDown();
+
+        drawTree(25, 100);
+    }
+
+    private static void drawBranch(double length){
+        turtle.forward(length);
+    }
+
+    private static void drawTree(int n, double length){
+        if(n > 1){
+            drawBranch(length);
+
+            Point position = turtle.getPosition();
+            double angle = turtle.getTurtleAngle();
+            
+            // Left subtree
+            turtle.turn(-20);
+            drawTree(n-1, (length/4)*3);
+            
+            turtle.jump(position.x, position.y);
+            turtle.setAngle(angle);
+            
+            // Right subtree
+            turtle.turn(20);
+            drawTree(n-1, (length/4)*3);
+        }  else{
+            drawBranch(length);
+        }
+    } 
+
+}

src/lab15_oop/BankController.java

@@ -0,0 +1,81 @@
+package labs.lab15_oop.bank;
+
+import hevs.utils.DateUtils;
+
+/**
+ * Simple bank account control class for lab 15
+ * @author @author <a href='mailto:pandre.mudry&#64;hevs.ch'> Pierre-André Mudry</a>
+ */
+public class BankController {
+	
+	public BankController() {
+		/**
+		 *  Verify that checks are done correctly
+		 *  in constructor
+		 */		
+		Checking c1;
+			
+		System.out.print("3 Should trigger error : minbalance positive\n\t");
+		c1 = new Checking("Toto", 1000, 1000);		
+		
+		System.out.print("4 Should trigger error : Amount < min and min < 0\n\t"); 
+		c1 = new Checking("Toto", -2000, -1000);		
+		
+		/**
+		 * Functional tests that are asserted
+		 */		
+		// Set a positive limit (impossible)
+		System.out.print("6 Should trigger error : minbalance positive\n\t");
+		c1 = new Checking("Test", 1000, -1000);
+		c1.setMinBalance(10000.0);
+					
+		/**
+		 * Savings account checks
+		 */
+		Savings s1;
+		
+		System.out.print("9 Should trigger error : abnormal init of savings\n\t");
+		s1 = new Savings("Toto", 1000, -3.0);
+				
+		// Deposit of negative value
+		System.out.print("11 Should trigger error : negative deposit \n\t");
+		s1 = new Savings("Test", 1000, 1.0);
+		s1.deposit(-100.0);
+		assert s1.getBalance() == 1000.0;
+		
+		// Withdrawing more than possible
+		System.out.print("12 Should trigger error : taking more than available\n\t");
+		s1 = new Savings("Test", 1000, 1.0);
+		s1.withdraw(3000);	
+		assert s1.balance == 1000 : s1.balance;
+		
+		// Interest computation check and normal operations checks
+		System.out.println("13 Should not trigger error : interest check and normal operations");
+		s1 = new Savings("Test", 1000, 0.032);
+		s1.withdraw(20.0);	
+		assert s1.balance == (1000 - 20.0);
+		s1.withdraw(100.0);	
+		assert s1.balance == 1000 - 20.0 - 100.0;
+		s1.deposit(120.0);	
+		assert s1.balance == 1000.0;
+		double interest = s1.calcInterest(DateUtils.createDate("1/1/2011"), DateUtils.createDate("11/1/2011"));
+		
+		// Manual check of interest
+		assert interest == ((1000.0 * 10 * 3.2 / 100) / 360.0);		
+	}
+		
+	/**	
+	 * @param args
+	 */
+	public static void main(String[] args) throws RuntimeException{
+		boolean assertionsAreEnabled = false;
+		assert (assertionsAreEnabled = true);
+
+		if (!assertionsAreEnabled) {
+			throw new RuntimeException( "Assertions must be enabled ! Add -ea to the VM arguments " +
+					"(Run Configuration menu in Eclipse)" );
+		}
+
+		new BankController();
+	}
+}

src/lab15_oop/GarageManager.java

@@ -0,0 +1,191 @@
+package labs.lab15_oop.BillGUI;
+
+import java.io.FileOutputStream;
+import java.io.PrintWriter;
+import java.util.LinkedHashMap;
+import java.util.Vector;
+
+
+/**
+ * A sample garage application
+ * @author Pierre-André Mudry, HES-SO Valais 2010-2016
+ */
+public class GarageManager {
+	private LinkedHashMap<String, Integer> services = new LinkedHashMap<String, Integer>();
+
+
+	GarageManager() {
+		// The various services provided in this garage
+		services.put("Oil level control", 20);
+		services.put("Tire replacement ", 50);
+		services.put("Windshield exchange", 60);
+		services.put("Oil filter change", 210);
+		services.put("Battery replacement", 320);
+		services.put("Pollution control", 200);
+		services.put("Brake revision", 400);
+	}
+
+
+	String[] getServices() {
+		return services.keySet().toArray(new String[services.size()]);
+	}
+
+
+	int[] vectorToArray(Vector<Integer> prestations) {
+		Integer[] v = prestations.toArray(new Integer[prestations.size()]);
+		int[] array = new int[v.length];
+
+
+		for (int i = 0; i < v.length; i++)
+			array[i] = v[i].intValue();
+
+
+		return array;
+	}
+
+
+	String generateBill(Vector<Integer> prestations) {
+		return generateBill(vectorToArray(prestations));
+	}
+
+
+	String generateHTMLBill(Vector<Integer> prestations) {
+		return generateHTMLBill(vectorToArray(prestations));
+	}
+
+
+	/**
+	 * Generates an HTML formatted string with the bill
+	 * 
+	 * @param prestations
+	 *            An array containing all the prestations
+	 * @return The HTML formatted string
+	 */
+	String generateHTMLBill(int[] prestations) {
+		int total_sum = 0;
+		Object[] keys = services.keySet().toArray();
+
+
+		String result = "<html>";
+		result += "<hr><br>";
+		result += "<center><h1>Super Auto 20000 bill</h1></center>";
+		result += "<center><small>Version 1.0</small></center><br>";
+		result += "<hr><br>";
+
+
+		// Create an HTML table
+		result += "<table cellpadding=\"2\" cellspacing=\"2\" width=\"100%\">";
+		result += "<tr>";
+		result += "<td bgcolor=\"#cccccc\">Prestation</td>";
+		result += "<td bgcolor=\"#cccccc\">Price</td>";
+		result += "</tr>";
+
+
+		for (int i = 0; i < prestations.length; i++) {
+			if (prestations[i] > services.size()) {
+				System.out.println("Error, non existing prestation !");
+				System.exit(-1);
+			}
+
+
+			String cKey = (String) keys[prestations[i]];
+
+
+			// HTML row
+			result += "<tr>";
+			result += "<td>" + cKey + "</td><td>" + services.get(cKey) + "</td>";
+			result += "</tr>";
+			total_sum += services.get(cKey);
+		}
+
+
+		result += "<tr>";
+		result += "<td><i>Total price</i></td>";
+		result += "<td bgcolor=\"#dddddd\"><b>" + total_sum + "</b></td>";
+		result += "</tr>";
+
+
+		// End of the HTML table
+		result += "</table>";
+
+
+		result += "<br><hr width=\"50%\" noshade /><br>"; // Horizontal line
+
+
+		result += "<small>Lab 15 generator</small>";
+		result += "</html>";
+		return result;
+	}
+
+
+	/**
+	 * Generates a text bill
+	 * 
+	 * @param prestations
+	 *            An array containing all the prestations
+	 * @return The generated text bill
+	 */
+	String generateBill(int[] prestations) {
+		int total_sum = 0;
+		Object[] keys = services.keySet().toArray();
+
+
+		String result = "";
+		result += "*************************\n";
+		result += "* Super Auto 20000 bill ****\n";
+		result += "*******************************\n\n";
+
+
+		for (int i = 0; i < prestations.length; i++) {
+			if (prestations[i] > services.size()) {
+				System.out.println("Error, non existing prestation !");
+				System.exit(-1);
+			}
+
+
+			String cKey = (String) keys[prestations[i]];
+			result += "- " + cKey + " \t" + services.get(cKey) + "\n";
+			total_sum += services.get(cKey);
+		}
+
+
+		result += "\n----------------------------------\n";
+		result += " Bill total \t\t" + total_sum + "\n";
+		result += "----------------------------------\n";
+		result += "\nPayment in 30 days. Thank you !";
+		return result;
+	}
+
+
+	public static void main(String[] args) {
+		GarageManager gm = new GarageManager();
+
+
+		// Prestation 0 is "Oil level control"
+		// Prestation 1 is "Tire replacement "
+		// Prestation 2 is "Windshield exchange"
+		// Prestation 3 is "Oil filter change"
+		// Prestation 4 is "Battery replacement"
+		// Prestation 5 is "Pollution control"
+		// Prestation 6 is "Brake revision"
+
+
+		int[] client1 = { 1, 1, 1, 1, 4, 6, 0 };
+		String bill1 = gm.generateBill(client1);
+		System.out.println(bill1);
+
+
+		PrintWriter outputStreamName;
+
+
+		try {
+			outputStreamName = new PrintWriter(new FileOutputStream("bill.txt"));
+			outputStreamName.print(bill1);
+			outputStreamName.close();
+		} catch (Exception e) {
+			e.printStackTrace();
+		}
+	}
+
+
+}

src/lab15_oop/hevs/utils/DateUtils.java

@@ -0,0 +1,83 @@
+package hevs.utils;
+
+import java.text.ParseException;
+import java.text.SimpleDateFormat;
+import java.util.Date;
+
+/**
+ * @author Pierre-André Mudry, HES-SO Valais 2010
+ * @version 1.0 
+ */
+public class DateUtils {
+	
+	private static final long msPerHour = 60 * 60 * 1000;
+	private static final long msPerDay = 24 * msPerHour;	
+	
+	/**
+	 * Creates a date from a text representation of this date
+	 * @param s The text representation, formatted as "dd/MM/yyyy"
+	 * @return The corresponding date
+	 */
+	static public Date createDate(String s){	
+		SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
+		
+		Date theDate = null; 
+		
+		try {
+			theDate = sdf.parse(s);			
+		}
+		catch(ParseException ex) {
+			System.err.println("Invalid date format specified !");
+			ex.printStackTrace();
+		}		
+		
+		return theDate;		
+	}
+	
+	static private long nMsec(Date a, Date b){
+		if(b.after(a)){			
+			return b.getTime() - a.getTime();		
+		}
+		else
+		{
+			return a.getTime() - b.getTime();
+		}
+	}
+
+	/**
+	 * Computes the number of hours between two dates
+	 * @param a The first date
+	 * @param b The second date
+	 * @return The number of hours between the two dates
+	 */
+	static public int nHours(Date a, Date b){									
+		int n= Math.round(nMsec(a, b)/ msPerHour);		
+		return n;
+	}
+	
+	/**
+	 * Computes the number of day between two dates
+	 * @param a The first date
+	 * @param b The second date
+	 * @return The number of days between the two dates
+	 */
+	static public int nDays(Date a, Date b){									
+		int nDays= Math.round(nMsec(a, b)/ msPerDay);		
+		return nDays;
+	}
+	
+	// Some samples
+	public static void main(String args[]){
+		Date first = DateUtils.createDate("1/1/2000");
+		Date second = DateUtils.createDate("1/1/2001");
+		
+		// It also takes into account leap years (2000)
+		System.out.println("There were " + DateUtils.nDays(first, second) + " days in 2000");
+		
+		// How old are you in days ?
+		Date birthdate = DateUtils.createDate("12/10/1977");
+		Date now = new Date();
+		System.out.println("You are " + DateUtils.nDays(now, birthdate) + " days old");
+	}
+	
+}

src/lab15_oop/hevs/utils/Input.java

@@ -0,0 +1,135 @@
+package hevs.utils;
+import java.io.*;
+
+/**
+ * * The Class Input is here to enter data with the keyboard.<br>
+ * The types below are supported by the Input class. <br>
+ * <br>
+ * - String <br>
+ * - Integer (int) <br>
+ * - Double (double) - Boolean (boolean) <br>
+ * - Character (char) <br>
+ * <br>
+ * <br>
+ * 
+ * @author Patrice Rudaz (patrice.rudaz@hevs.ch)
+ * @author Cathy Berthouzoz (cathy.berthouzoz@hevs.ch)
+ * @modified Pierre-André Mudry
+ * @version 3.0 - 6-10-2008
+ * @see #readString()
+ * @see #readLong()
+ * @see #readLong()
+ * @see #readDouble()
+ * @see #readBoolean()
+ * @see #readChar()
+ */
+public class Input {
+	/**
+	 * * Reads a valid char value from the console.
+	 * 
+	 * @return The typed char
+	 * @see java.lang.Character
+	 */
+	public static char readChar() {
+		boolean ok = false;
+		int res = -1;
+		while (!ok) {
+			try {
+				BufferedReader stdin = new BufferedReader(
+						new InputStreamReader(System.in));
+				res = stdin.read();
+				ok = Character.isDefined(res);
+			} catch (Exception ex) {
+				System.out.println("This is not a valid character. Try again");
+			}
+		}
+		return (char) res;
+	}
+
+	/**
+	 * * Reads a String from the console.
+	 * 
+	 * @return The typed string
+	 * @see java.lang.String
+	 */
+	public static String readString() {
+		BufferedReader stdin = new BufferedReader(new InputStreamReader(
+				System.in));
+		try {
+			return stdin.readLine();
+		} catch (Exception ex) {
+			return "There is a problem. Try again.";
+		}
+	}
+
+	/**
+	 * * Reads a valid integer value from the console.
+	 * 
+	 * @return The typed value
+	 * @see java.lang.Integer
+	 */
+	public static int readInt() {
+		boolean ok = false;
+		int res = -1;
+		while (!ok) {
+			try {
+				BufferedReader stdin = new BufferedReader(
+						new InputStreamReader(System.in));
+				String s = stdin.readLine();
+				if (s.startsWith("0x") || s.startsWith("0X")) {
+					res = Integer.parseInt(s.substring(2), 16);
+				} else {
+					res = Integer.parseInt(s, 10);
+				}
+				ok = true;
+			} catch (Exception ex) {
+				System.out.println("This is not a valid number. Try again");
+			}
+		}
+		return res;
+	}
+
+	/**
+	 * * Reads a valid double value from the console.
+	 * 
+	 * @return The typed double value
+	 * @see java.lang.Double
+	 */
+	public static double readDouble() {
+		boolean ok = false;
+		double res = -1;
+		while (!ok) {
+			try {
+				BufferedReader stdin = new BufferedReader(
+						new InputStreamReader(System.in));
+				res = Double.parseDouble(stdin.readLine());
+				ok = true;
+			} catch (Exception ex) {
+				System.out.println("This is not a valid number. Try again");
+			}
+		}
+		return res;
+	}
+
+	/**
+	 * * Reads a valid boolean value from the console.
+	 * 
+	 * @return the value true if the typed value is true, false otherwise.
+	 * @see java.lang.Boolean
+	 */
+	public static boolean readBoolean() {
+		boolean ok = false;
+		boolean res = false;
+		while (!ok) {
+			try {
+				BufferedReader stdin = new BufferedReader(
+						new InputStreamReader(System.in));
+				res = Boolean.parseBoolean(stdin.readLine());
+				ok = true;
+			} catch (Exception ex) {
+				System.out.println("This is not a valid boolean. Try again");
+			}
+		}
+		return res;
+	}
+}