Right rotation of a list in python
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sure! right rotation of a list in python involves shifting the elements of the list to the right by a specified number of positions. this can be achieved by slicing the list and concatenating the sliced parts in the reversed order.
here is a step-by-step guide to right rotate a list in python:
1. define a function to perform the right rotation:
2. in the function `right_rotate_list`, `lst` is the input list to be rotated, and `n` is the number of positions to rotate to the right.
3. the expression `n % len(lst)` ensures that the rotation is within the length of the list. if `n` is greater than the length of the list, it wraps around to the beginning.
4. the slicing `lst[-n:]` extracts the last `n` elements of the list, while `lst[:-n]` extracts all elements except the last `n`.
5. by concatenating these two sliced parts in the reversed order, we achieve the right rotation of the list.
here is an example of how to use the `right_rotate_list` function:
in this example, the original list `[1, 2, 3, 4, 5]` is rotated to the right by 2 positions, resulting in the rotated list `[4, 5, 1, 2, 3]`.
you can now use the `right_rotate_list` function to perform right rotation on any list with the desired number of positions.
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