Write code which creates three regular polygons with 11, 14 and 19 sides respectively. All side lengths should be 1.0. The code should then print the three shapes, one on each line, in the order given (i. e. the one with 11 sides first and the one with 19 sides last). Sample run: regular hendecagon with side length 1.0 regular tetrakaidecagon with side length 1.0 regular enneadecagon with side length 1.0

Consider this data sequence: "3 11 5 5 5 2 4 6 6 7 3 -8". any value that is the same as the immediately preceding value is considered a consecutive duplicate. in this example, there are three such consecutive duplicates: the 2nd and 3rd 5s and the second 6. note that the last 3 is not a consecutive duplicate because it was preceded by a 7. write some code that uses a loop to read such a sequence of non-negative integers , terminated by a negative number. when the code finishes executing, the number of consecutive duplicates encountered is printed. in this case, 3 would be printed. assume the availability of a variable, stdin, that references a scanner object associated with standard input. that is, stdin = new scanner(system.in); is given.

3. bob is arguing that if you use output feedback (ofb) mode twice in a row to encrypt a long message, m, using the same key each time, it will be more secure. explain why bob is wrong, no matter what encryption algorithm he is using for block encryption (15 points).

Is an attack that relies on guessing the isns of tcp packets