Indexing: Indexing refers to assigning a unique identifier (index) to each element in a data structure, such as an array or ArrayList. It allows for efficient access and retrieval of specific elements.
Linear Data Structure: A linear data structure organizes elements sequentially, where each element has a direct predecessor and successor. Examples include arrays, linked lists, and stacks.
Unsorted List: An unsorted list refers to a collection of elements that are not arranged in any particular order. Sequential search can be used to find an element within an unsorted list.