To communicate with the operating system running on the computer, each device also requires a software element known as what?

What kind of software users of all skill levels create web pages that include graphics, video, audio, animation, and other special effects? website authoring website software website publishing website editing

What is a costume plot? why is it important to a film or theater production?

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.