Write a class called Rectangle that represents a rectangular two-dimensional region. It should have the following constructor:

constructor(x, y, width, height)

• Constructs a new rectangle whose top-left corner is specified by the given coordinates and with the given width and height.

It should have the following properties:

x

y

width

height

It should have the following methods:

toString()

• Returns a string representation of this rectangle, as [x=1, y=2, width=3, height=4].