If you have a sorted array and do a binary search for a value then the worst case is:

It is not a good idea in a cover letter to mention another person whom the employer knows.

You are almost finished updating a web site. as part of the update, you have converted all pages from html 4.0 to html5. the project is currently on schedule. however, your project manager has been asked by the marketing team manager to justify a day of time spent validating the site's html5 pages. the marketing team manager does not have technical knowledge of the internet or the web. which is the most appropriate explanation to provide to the marketing team manager?

Some of the first computer games were created in the early 1970s by college students experimenting after hours to see what the were capable of doing.