ITI0011:Kordamine eksamiks

Koodilugemine

public class First {

	public static int a = 5;
	public static int x = 10;
	public static void main(String[] args) {
		a = x;
		x++;
		int aa = a;
		int y = x() + a(x) + x(x(aa));
		System.out.println("main a:" + a + " x:" + x);
		System.out.println("y:" + y);
		
		int a = 2 * 4;
		for (int i = a; i - 2 > 5 / 2; ) {
			System.out.println(i);
			a += i--;
		}
		System.out.println("a:" + a);
		
		String s = "taskuuni";
		String result = "";
		for (a = 2; a < 4; a += 1) {
			result = s.substring(a, 2 * a) + result;
		}
		System.out.println(result);
		System.out.println(s.charAt(2) + result.substring(1));
	}
	
	public static int x() {
		return a + 1;
	}
	
	public static int a(int a) {
		//a = a++ + 1;
		a = a + 2;
		System.out.println(a);
		for (int x = 0; a < 1; a++) ;
		System.out.println("a a:" + a + " x:" + x);
		return 0;
	}
	
	public static int x(int x) {
		x++;
		a--;
		System.out.println("x a:" + a + " x:" + x);
		return x;
	}
}

public class ReadME{

	public static void main(String[] args) {
		
		int sum = 0;
		for (int i = 0, j = 0; i++ < 5 ; i--) {
			sum += i++;
		}
		System.out.println(sum);
		
		sum = 0;
		for (int i = 0, j = 0; i++ < 5 ; i--, j-=2) {
			sum += i++ + j++;
		}
		System.out.println(sum);

		int u = 13;
		for (int i = u / 2; i++ < 12; i += 2) {
			u += i;
		}
		System.out.println("u:" + u);

		int sum = 0;
		for (int i = 0; i < 5; i++) {
			if (i % (i % 3 + 1) == 1) continue;
			sum += i;
		}
	}

}

public class Hello {
	public static int y = 1, x = 100;

	public static void main(String[] args) {
		int x = 0;
		int z = x + 0;

		System.out.println("main x,y,z: " + x + " " + y + " " + z);
		z = world(hello(x), y);
		System.out.println("main x,y,z: " + x + " " + y + " " + z);
	}

	public static void hello(int x, int z) {
		x = z + 100;
		System.out.println("hello(world(x, z))");
	}

	public static int hello(int x) {
		int y = 0;
		++x;
		while (x < 100) {
			if (y > 2)
				continue;
			break;
		}
		System.out.println("hello x,y: " + (x - 2) + " " + y);
		return x;
	}

	public static int world(int x, int z) {
		int y = 0;
		y++;
		while (y++ <= 3)
			z *= y;
		System.out.println("world x,z++,z: " + x + " " + z + " " + z);
		return z;
	}
}

GUI

Kirjuta programmi osa, mis hiire vajutamise korral märgistab ära hiire asukohale kõige lähema ristküliku. Hiire kaugust ristkülikust tuleb mõõta ristküliku keskpunkti suhtes.

Write a part of a program which in case of mouse click highlights the closest rectangle to the mouse. The distance from the mouse position is calculated using the centre of the rectangle.

Helpful stuff:

Rectangle object – all the shapes in the given pane is guaranteed to be of that shape. Subclass of Node.
r.getX(), r.getY() – x (left side) and y (upper side) for the rectangle r
r.getWidth(), r.getHeight() – width and height of the rectangle r.
ObservableList<Node> pane.getChildren() – returns a list of all the children (in our case, all the rectangles).
For highlighting: r.setFill(Color.RED) can be used, where r is the object to be highlighted.

<source lang="java"> public class Rect extends Application {

public void start(Stage stage) throws Exception { Pane pane = new Pane();

pane.addEventHandler(MouseEvent.MOUSE_CLICKED, new EventHandler<MouseEvent>() { public void handle(MouseEvent event) {

} }); }

}

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