initial solutions

src/main/java/oving1/Rectangle.java

@@ -0,0 +1,87 @@
+package oving1;
+
+public class Rectangle {
+	int x1;
+	int y1;
+	int x2;
+	int y2;
+
+	public Rectangle(int x1, int y1, int x2, int y2) {
+		this.x1 = x1;
+		this.y1 = y1;
+		this.x2 = x2;
+		this.y2 = y2;
+	}
+
+	int getMinX() {
+		return Math.min(x1, x2);
+	}
+
+	int getMinY() {
+		return Math.min(y1, y2);
+	}
+
+	int getMaxX() {
+		return Math.max(x1, x2);
+	}
+
+	int getMaxY() {
+		return Math.max(y1, y2);
+	}
+
+	int getWidth() {
+		return getMaxX() - getMinX();
+	}
+
+	int getHeight() {
+		return getMaxY() - getMinY();
+	}
+
+	boolean isEmpty() {
+		return getWidth() == 0 || getHeight() == 0;
+	}
+
+	boolean contains(int x, int y) {
+		return x >= getMinX() && x <= getMaxX() && y >= getMinY() && y <= getMaxY();
+	}
+
+	boolean contains(Rectangle rect) {
+		return contains(rect.x1, rect.y1) && contains(rect.x2, rect.y1) && contains(rect.x1, rect.y2)
+				&& contains(rect.x2, rect.y2);
+	}
+
+	boolean add(int x, int y) {
+		int px1 = x1;
+		int px2 = x2;
+		int py1 = y1;
+		int py2 = y2;
+		x1 = Math.min(x, x1);
+		x2 = Math.max(x, x2);
+		y1 = Math.min(y, y1);
+		y2 = Math.max(y, y2);
+		return px1 == x1 && px2 == x2 && py1 == y1 && py2 == y2;
+	}
+
+	boolean add(Rectangle rect) {
+		return add(rect.x1, rect.y1) || add(rect.x2, rect.y1) || add(rect.x1, rect.y2) || add(rect.x2, rect.y2);
+	}
+
+	Rectangle union(Rectangle rect) {
+		int px1 = x1;
+		int px2 = x2;
+		int py1 = y1;
+		int py2 = y2;
+		add(rect);
+		Rectangle r = new Rectangle(x1, y1, x2, y2);
+		x1 = px1;
+		x2 = px2;
+		y1 = py1;
+		y2 = py2;
+		return r;
+	}
+
+	@Override
+	public String toString() {
+		return "";
+	}
+}