Object-oriented super simple exercises

1. Define a rectangle class with attributes: length and width. Methods: find perimeter and area

   class recs:
       def __init__(self,long,wide):
           self.longs=long
           self.wides=wide
   
       def peri(self):
           return (self.longs+self.wides)*2
   
       def areas(self):
           return self.longs*self.wides
   
   t1 = recs(10,20)
   print(t1.areas())
   print(t1.peri())
   

2. Define a two-dimensional point class with attributes: x-coordinate and y-coordinate. Method: find the distance from the current point to another point

   class recs:
       def __init__(self,x=0,y=0):
           self.x=x
           self.y=y
   
       def peri(self,self1):
           return ((self.x-self1.x)**2+(self.y-self1.y)**2)**0.5
   
   
   t1 = recs(10,20)
   t2 = recs()
   print(t2.peri(t1))
   

3. Define a circle class with attributes: radius and center. Methods: find the circumference and area of ​​the circle, determine whether the current circle is circumscribed to another circle

   class Circle:
       x = 3.14
       def __init__(self,r=0,cen=0):
           self.r = r
           self.c = cen
   
   
       def peri(self):
           return 2*self.x*self.r
   
   
       def areas(self):
           return  self.x*self.r**2
   
   
       def cutting(self,self1):
           return self.c+self1.c==self.r+self1.r
   
   
   r=Circle(5)
   c = Circle(7,12)
   print(r.peri())
   print(r.areas())
   print(r.cutting(c))
   

4. Define a line segment class with attributes: start point and end point, and method: get the length of the line segment

   class Lines:
       def __init__(self,a,b):
           self.a=a
           self.b=b
   
       def lengths(self):
           return self.b-self.a
   
   
   f1=Lines(15,84)
   print(f1.lengths())
   

5. Define a dog and a human:

   Dog has attributes: name, gender and breed. Method of possession: call

   Human possessing attributes: name, age, dog possessing method: walking the dog