interview 5

Write a funtion to add value on given index without using any inbuilt function

def list_update(loc, val):
    # loc 3
    list1 = [5,3,7,1]
    list2 = list1[:loc] + list([val]) + list1[loc:]
    return list2
list_update(3,50)
    
    

Given decorators what is the output of given code

def decor1(func):
        def inner():
                x = func()
                return x * x
        return inner

def decor(func):
        def inner():
                x = func()
                return 2 * x
        return inner

@decor1
@decor

def num():
    return 10

print(num())

400


Find the largest palendrom in given string
name = "pipapig"
output ipapi