Do you want me to show you a single-linked list or a double-linked one? [data, *next] [data, *next] [data, *next] [data, *next] If next is null (0), it's

Do you want me to show you a single-linked list or a double-linked one? [data, *next] [data, *next] [data, *next] [data, *next] If next is null (0), it's the end of the list.