Suppose we have a list of elements called nums. We have to filter out all odd indexed elements, so only return even indexed elements from that list.
So, if the input is like nums = [5,7,6,4,6,9,3,6,2], then the output will be [7, 4, 9, 6]
To solve this, we will follow these steps −
- use python list slicing strategy to solve this problem
- start from index 1, end at the end of list and increase each step by 2, so the slicing
- syntax is [1::2]
Example
Let us see the following implementation to get better understanding −
def solve(nums): return nums[1::2] nums = [5,7,6,4,6,9,3,6,2] print(solve(nums))
Input
[5,7,6,4,6,9,3,6,2]
Output
[7, 4, 9, 6]