You will find that interviewers like to ask candidates about the various methods they use to find nodes and link lists. Don't be surprised if this question comes up a couple times during an interview with Salesforce but is asked in a different way. To get a broader understanding of linked lists, here's an overview: A linked list is easiest explained as a linear data structure with the collection of multiple nodes, where each element stores its own data and a pointer to the location of the next element. The last link is essentially a linked list that points to null, which indicates it's at the end of a chain. An element on the other hand in a linked list that is called a node. The first of nodes is called the head, and the last of nodes is called the tail. An interviewer will likely dig into questions about linear data structure, and which nodes contains a value and pointer.
