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Computer Programming Basics Difficulty: Medium

Let A={1, 2, 3} B={2, 3, 4} C={1, 3, 5} D={2, 3}. Find the cardinality of sum of all the sets. The part of machine level instruction, which tells the central processor what has to be done, is What will be the output of the following Java program? import java.util.*; class Maps { public static void main(String args[]) { HashMap obj = new HashMap(); obj.put("A", new Integer(1)); obj.put("B", new Integer(2)); obj.put("C", new Integer(3)); System.out.println(obj); } } What is the best case time complexity of gnome sort? What is the default port number of HTTP's?