How can i skip every Kth element in a list and add rest ?

Question

in python

Answer 1

#we suppose l is your list and k is already defined

The shortest way
sum(l) - sum([l[i] for i in range(1,len(l)) if i%k == 0]) + l[0]

The cleanest way
sum = 0
for i in range(1,len(l)):
if i%k:
sum+=l[i]
if len(l):
sum +=l[0]

Answer 2

How to find 2's complemet of a binary number in python ?

we have to check number from last and after 1st one occur then after that convert all one to zero and all zero to one .

Answer 3

please ans

Answer 4

in python

Answer 5

The easiest way is to do :
~n + 1

~n is the 1 complement operator