There are a number of roles held by various users of online digital media, including contributors, conversationalists, critics, organizers, spectators, and joiners. Often, people who have a strong presence online will hold two or more roles.
Describe at least three of these roles. Of the roles you described, why might someone act on two of them at the same
time? That is, what kind of online activity would result in a person taking on those two roles?

What is the algorithm for building a binary tree program

Type the correct answer in the box. spell all words correctly. under which key category do the page up and page down keys fall? page up and page down keys fall under the keys category.

Write a method named addall that could be placed inside the hashintset class. this method accepts another hashintset as a parameter and adds all elements from that set into the current set, if they are not already present. for example, if a set s1 contains [1, 2, 3] and another set s2 contains [1, 7, 3, 9], the call of s1.addall(s2); would change s1 to store [1, 2, 3, 7, 9] in some order. you are allowed to call methods on your set and/or the other set. do not modify the set passed in. this method should run in o(n) time where n is the number of elements in the parameter set passed in.