454. Matrix Area (Beginner)

description

Implement a matrix class Rectangle, including the following member variables and functions:

1. The two common member variables  width and  height represent the width and height respectively.
2. A constructor that accepts two parameters width and height to set the width and height of the matrix.
3. A member function  getAreathat returns the area of ​​this matrix.

Sample  

样例1:
Java:
    Rectangle rec = new Rectangle(3, 4);
    rec.getArea(); // should get 12，3*4=12

Python:
    rec = Rectangle(3, 4)
    rec.getArea()

样例2:
Java:
    Rectangle rec = new Rectangle(4, 4);
    rec.getArea(); // should get 16，4*4=16

Python:
    rec = Rectangle(4, 4)
    rec.getArea()

Code

public class Rectangle {
    /*
     * Define two public attributes width and height of type int.
     */
    // write your code here
    int width = 0;
    int height = 0;
    
    /*
     * Define a constructor which expects two parameters width and height here.
     */
    // write your code here
    public Rectangle(int width,int height){
        this.width = width;
        this.height = height;
    }
    /*
     * Define a public method `getArea` which can calculate the area of the
     * rectangle and return.
     */
    // write your code here
    public int getArea(){
        return width * height;
    }
}