Implement a doubly linked list.
Like an array, a linked list is a simple linear data structure. Several common data types can be implemented using linked lists, like queues, stacks, and associative arrays.
A linked list is a collection of data elements called nodes. In a singly linked list each node holds a value and a link to the next node. In a doubly linked list each node also holds a link to the previous node.
You will write an implementation of a doubly linked list. Implement a Node to hold a value and pointers to the next and previous nodes. Then implement a List which holds references to the first and last node and offers an array-like interface for adding and removing items:
push(insert value at back);pop(remove value at back);shift(remove value at front).unshift(insert value at front);
To keep your implementation simple, the tests will not cover error
conditions. Specifically: pop or shift will never be called on an
empty list.
If you want to know more about linked lists, check Wikipedia.
To run the tests, run the command dotnet test from within the exercise directory.
Initially, only the first test will be enabled. This is to encourage you to solve the exercise one step at a time.
Once you get the first test passing, remove the Skip property from the next test and work on getting that test passing.
Once none of the tests are skipped and they are all passing, you can submit your solution
using exercism submit LinkedList.cs
For more detailed information about the C# track, including how to get help if you're having trouble, please visit the exercism.io C# language page.
Classic computer science topic