Functions

------------------Find Factorials using Recurssion------------------------
'''def tri_recursion(k):
    if (k>0):
        result = k+tri_recursion(k-1)
        print(result)
    else:
        result=0
    return result
        
print("")
tri_recursion(6)
#print(my_function(5))
#print(my_function())'''

---------------------Area of circle------------
'''
#areaofcircle
def area_circle(r):
    result= 3.14*r**2
    return result
    
print(area_circle(6))'''
'''
-------------------------prime or not-------------------

def my_function(x):
    if x==1:
        print('num is not prime')
    
    elif x>1:
        for i in range(2,x):
            if(x % i) == 0:
                print("number is not prime")
                break
    
        else:
            return ("number is prime")
            
    else:
        print('num is not prime')
        
print(my_function(29))




lis=[1,4,10,12,11,31,77,67]
prime=[]
for i in lis:
    c=0
    for j in range(1,i):
        if i%j==0:
            c+=1
    if c==1:
        prime.append(i)
print(prime)

----------------reverse string -------------------------

def rev_fun(X):
   #return X[::-1] # to reverse like mirror image
     
   word = X.split(' ')
   reverse_sentence= ' '.join(reversed(word)) # to reverse entire sentence
   return reverse_sentence
   
   -----------------palindrome--------------------
    
print(rev_fun(" mummy pappa?")) '''
'''
def my_fun(s):
    if s == s[::-1]:
        print("palindrome")
    else:
        print("not palindrome")
    
my_fun('new string')
my_fun('asa') '''

# op: not palindrome

'''
------------------- factorial using recurssion -------------------

def fact_rec(num):
    if num <0:
        raise ValueError("factorial of num is not defined")
    elif num ==0:
        return 1
    else:
        return num * fact_rec(num-1)
        
num=-1
print("factorial of" , num, "is", fact_rec(num))'''
'''

------------------square root of list---------------
import math

def sqr_fun(arr):
    s=[]
    for i in range(len(arr)):
        s.append(math.sqrt(arr[i]))
    return s
list=[4,8,3,5]
result = sqr_fun(list)
print(result)
    
------------------sqr of num ------------    
    
 def sqr_fun(num):
    return num**2 
    

print(sqr_fun(200)) 

---------------- even or odd=------------------

def ev_od(num):
    if num%2==0:
        print("num is even")
    else:
        print("num is odd")

ev_od(8) 

-----------calculate area of triangle --------

def area_tri(b,h):
    return 1/2 * b * h
    
print(area_tri(3,9)) 

-----------------table of given no.--------------------

def mul_table(num):
    m=[]
    n=1
    while n<=10:
        m.append(num*n)
        n+=1
    return m
    
print(mul_table(20))

------------intersection of two list-----------
    
def str_fun(Country,towns):
    result=[value for value in Country if value in towns]
    #list(set(Country) & set(towns))
    return result
    
country=["india",'america','japan','china']
towns=["pune","mumbai","delhi","india"]
print(str_fun(country,towns)) 

----------------- leap year or not ------------

def year_check(year):
    if year %100 == 0 and year % 400==0:
        return "leap"
        
    elif year % 100 !=0 and year %4==0:
            return "leap" 
    else:
        return "error"
year=2001      
print(year_check(year)) '''