training day 9

                                Programs in python

Program for reversed string

s = input("Enter the string : ")

def reverse(s):

  s = " " , join(reversed(s))

   return s

print("The original string is :")

print(s)

print("The reversed string is :")

print(reverse(s))

Program to reverse a string using classes

class string :

def __init__(self,s):

    self.string = s

def reverse(self):

    st = " ".join(reversed(self.string))

   return st

x = string("Hello")

print(x.reverse()) 

Program to find area and perimeter of a circle

class circle:

def __init__(self,r):

  self.radius = r

def area(self):
print("Area of circle")

Area = 3.14*self.radius*self.radius

 return area

def peri(self):
print("Circumference of circle ")

peri = 2*3.14*self.raduis

return peri

x = circle(5)

print(x.area())

print(x.peri())