A programmer needs to store a list of usernames which will be processed one by one in a program. The number of usernames is known and will not change. Which of the following data structures should the programmer use to achieve the best performance when iterating over the usernames sequentially?
Linked list
Queue
Array
Hash table
Stack
An array is the most suitable container for storing a fixed number of elements that will be processed sequentially. Arrays are indexed collections of elements that allow for quick access to each item by its index number, optimizing the performance of iterating through them. The quick access to elements by their indices makes arrays especially efficient for this use case. Other structures like linked lists, which may have similar functionality, usually have a slower access time due to the nature of their node traversal.
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