Answer:
Optical system. An overhead projector works on the same principle as a slide projector, in which a focusing lens projects light from an illuminated slide onto a projection screen where a real image is formed.
Explanation:
Answer:
D. return str.substring(0, 1) + removeDupChars(str.substring(1));
Explanation:
The logic here is following:
If the there are consecutive duplicate characters, return the removeDupChars method. The parameter of the removeDupChars method is a string, but the duplicate of the first character is removed from the string. The else-if part of the program does this job.
If the consecutive characters are not duplicated, return the first character of the string and the removeDupChars method. The parameter of the removeDupChars method is the rest of the string characters. The else part of the program does this job.
When the length of the str becomes one (or when the str is null), the program reaches its base and returns the str. The if part of the program does this job.
Answer:
The answer is E: All of the above
Explanation:
All of the above scenarios are examples of serious computer crimes. They are crimes that exist in the offline world but take place online. Sexual predators, for instance, mostly take advantage of the anonymity provided by the internet. They often target dating sites and find suitable victims. Cyber bullying and Cyber stalking are just as harmful as any other computer crime. Industrial Espionage may also somehow fall into this category. Less frequently, criminals may steal documents and computer files or more often, illegally gain access to company’s trade secrets on computers and servers.
