Western Governors University (WGU) ICSC2100 C949 Data Structures and Algorithms I Practice Exam

The correct choice is a type of function that allows for items to be added or removed from both ends, known as a doubly ended queue (deque). A deque is a versatile data structure that facilitates operations at both the front and the back of the queue. This means you can efficiently perform insertions and deletions from both ends, providing flexibility in data management.

This capability is particularly beneficial in scenarios where you may need the order of elements to be manipulated from both sides, such as in certain algorithms or when maintaining a sliding window of elements from a data set. The performance characteristics of a deque allow these operations to be performed in constant time, making it suitable for applications that require frequent changes to the data structure.

Other types of data structures, such as stacks and queues, have more restrictive operational principles. Stacks follow a Last In, First Out (LIFO) approach, while queues adhere to a First In, First Out (FIFO) principle. Trees are hierarchical structures primarily used for sorting and managing data in a way that allows for efficient searching and organization, but they do not provide the same level of flexibility with both ends as a deque does.