Question

Write a function named reverse_list that takes as a parameter a list and and reverses the order of the elements in that list. It should not return anything - it should mutate the original list. This can be done trivially using slices, but your function must not use any slicing.

Answer 1

Answer:

The function in python is as follows:

def reverse_list(nums):

   half =int(len(nums)/2)

   for i in range(half):

       nums[i], nums[len(nums)-i-1] = nums[len(nums)-i-1],nums[i]

   print(nums)

Explanation:

This defines the function

def reverse_list(nums):

This gets the half the length of the list

   half =int(len(nums)/2)

This iterates through the list

   for i in range(half):

This swaps list items with the opposite item on the other half

       nums[i], nums[len(nums)-i-1] = nums[len(nums)-i-1],nums[i]

This prints the new list

   print(nums)