Python_Notes-and-Assigment/function.py at main · deepakyadav043/Python_Notes-and-Assigment · GitHub

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#                                                             ##13th april
# #user defined function
# def greeting():     # defining of a function
#     print("hello good morning !!")

# greeting() ## --> calling of a function
# greeting() ## --> calling of a function
# greeting() ##--> calling of a function
# greeting() ##--> calling of a function

# ##parameters and arguments
# def addition(a,b): ## a and b are parameter
#     print(a + b)

# addition(10,20)
# ## palindrome
# def palindrome(n): # a and b are palindrome
#     copy = n
#     rev = 0
#     while n != 0:
#         rev = rev*10+n%10
#         n = n//10
#     if rev == copy:
#         print("entered number is palindrome")
#     else:
#         print("entered number is not a palindrome")

# palindrome(121)
# palindrome(123)
# palindrome(1234)
# palindrome(4444)

# #1st positional argument

# def multiply(a,b):
#     print(a *b)
#     multiply(12,67)

# ##2nd default argument/keyword argument
# #def info (name,age):
# def info(a,b,c,d,e):
#     print(a,b,c,d,e)
#     #print(f"your name is {name} and your age is {age}")
# #info(age = 24,name = "harsh")
# info (12,34,e = 67 ,c = 12 , d = 67)

# ## if you give a value using default argument you always have to give further value using default argument

# ##default parameter
# def info(name,age,id =None ):
#     print("info recieved")
# info("Deepak",24,1234)

# # return vs print

# def hello():
#     return "how are you"
# #a = hello()
# #print(a)

# print(hello())

# ##
# def agechecker(n):
#     if n >= 18:
#         return True
#     else:
#         return False

# age = int(input("tell your age :-"))

# if agechecker(age):
#     print("you can vote")
# else:
#     print("you cannot vote")

# ###
# def hello1():
#     hello2()
#     print("hello1")
# def hello2():
#     hello3()
#     print("hello2")
# def hello3():
#     hello4()
#     print("hello3")
# def hello4():
#     print("hello4")

# hello1()

# ##  print 1 to n using function
# def numbers(n):
#     if n == 1001:
#         return "done"
#     print(n)
#     numbers(n+1)

# numbers(1)

# ## reverse / backtracking
# def numbers(n):
#     if n == 1001:
#         return "done"
#     numbers(n+2)
#     print(n)

# numbers(1)


## 7 Reverse a number using function
def reverse_numbers(n,rev = 0):
    if n == 0:
        return rev
    else:
        return reverse_numbers(n//10,  rev*10 + n%10)

num = int(input("enter your number"))

print("reversed number", reverse_numbers(num))
# def reverse_number(n, rev=0):
#     if n == 0:
#         return rev
#     else:
#         return reverse_number(n // 10, rev * 10 + n % 10)


# # input
# num = int(input("Enter a number: "))
# print("Reverse =", reverse_number(num))