Branches - Farah #33
Open
Branches - Farah #33
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
CheezItMan
reviewed
Dec 18, 2019
| @@ -1,4 +1,5 @@ | |||
| require_relative 'node' | |||
| require 'pry' | |||
| # Time complexity - ? | ||
| # Space complexity - ? | ||
| # Time complexity - O(1) where 1 is the one node created | ||
| # Space complexity - O(1) where 1 is the one node created in space | ||
| def add_first(data) |
Comment on lines
+11
to
+12
| # Time complexity - O(1) where 1 is the one node created | ||
| # Space complexity - O(1) where 1 is the one node created in space |
There was a problem hiding this comment.
Actually it's O(1) because the amount of time and memory doesn't change no matter how big the list is.
| # Time complexity - ? | ||
| # Space complexity - ? | ||
| # Time complexity - O(n) where n is the length of the list, in worst case scenario | ||
| # Space complexity - O(1) because only single node data is returned | ||
| def get_at_index(index) |
There was a problem hiding this comment.
What if the index is greater than the length of the list?
| def get_last | ||
| current = @head |
There was a problem hiding this comment.
What if head is nil?
Suggested change
| current = @head | |
| return nil if head.nil? | |
| current = head |
|
|
||
| if current.nil? | ||
| add_first(data) |
| # Time complexity - ? | ||
| # Space complexity - ? | ||
| # Time complexity - O(n) where n is the length of the entire list | ||
| # Space complexity - O(1) because you are adding one node | ||
| def add_last(data) |
| # Time complexity - ? | ||
| # Space complexity - ? | ||
| # Time complexity - O(n) where n is the length of the linked list | ||
| # Space complexity - O(1) because only a single number is being returning, the length of the list | ||
| def length |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Linked List Comprehension Questions