Assignment 11-03

 

Assignment

1.Write the definition of a Point class. Objects from this class should have a

· a method show to display the coordinates of the point

· a method move to change these coordinates.

Solution :

 

'''the following code p class takes 2 arguments
        the SHOW function returns the co-ordinates or point suppose (x,y)
        the MOVE function takes 2 arguments (x1,y1) and moves the (x,y) point by (x1,y1)
        the SHOW function displays the new co-ordinates
'''
class p(object):

    def __init__(self, x, y):
        self.x = x
        self.y = y

    def show(self):
        return self.x, self.y

    def move(self, x, y):
        self.x += x
        self.y += y


p1 = p(1,4)
p2 = p(2,5)

print(p1.show())
print(p2.show())

p1.move(5,6)
p2.move(7,8)

print(p1.show())
print(p2.show())

2.Write a Python class to implement pow(x, n)    

 Solution :

class p:

    def pow(self, x, n):
        if x == 0 or x == 1 or n == 1:
            return x

        if x == -1:
            if n % 2 == 0:
                return 1
            else:
                return -1
        if n == 0:
            return 1
        if n < 0:
            return 1/self.pow(x, -n)
        val = self.pow(x, n//2)
        #print(val)
        if n % 2 == 0:
            return val*val

        return val*val*x


print(p().pow(2, 9))
print(p().pow(3, -3))
print(p().pow(-5,4 ))

 

 

3.Write a Python class named Circle constructed by a radius and two methods which will compute the area and the perimeter of a circle.  

Solution :

 

class circle():

    def __init__(self,r):
        self.rad=r

    def area(self):
        return self.rad**2*3.14

    def peri(self):
        return self.rad*2*3.14


circle2 = circle(4)
print(circle2.area())
print(circle2.peri())