In some programs we would like to be able to determine the input and output filenames at the time that the program is executed. Modify your program from Assignment 8 (A8Q3) so that the main program prompts the user for the two filenames and passes the input filename to the readvalues () function. The function readvalues() now opens the input file to read the data and closes it when done. This program uses a second function, range(), to find the maximum and minimum of a set of floats stored in the input file. Your main must use the following steps:

Write a c++ code that compare the times to traverse a list (containing a large number of elements) implemented in an array, in a simple linked list, and in an unrolled linked list. In this experiment, you need to generate a large list, store it in each representation, and then measure the time to traverse the list in each representation. For the array, this is almost straightforward: Fill the array and then do a sequential scan. Here is the thing to watch for: When you fill the array, it all gets read into cache. So, somehow you need to ensure that almost all of the array is NOT in cache before you do your traversal.  One thing you can do is make your array big enough that most of it will not fit in cache at once.  You need to make sure that the node capacity is not too small, or it will behave too much like a simple linked list.

For this assignment, you must implement the ElGamal Public-Key Encryption scheme with any programming language that you are comfortable with. The recommendation is to use C/C++ or Java. You can accomplish this assignment individually or by forming a team of 2 students. Alternatively, you can work with your team members of the previous assignment. Your program should get the "key size" from the user in terms of number of bits (for instance, 64, 128, etc). Based on the size, use Fermat or Miller-Rabin primality test algorithm to define your large prime number. You can use the existing programming packages to find a generator of your finite field. Your program should then initialize a pair of key, i.e., private and public keys. For the computations, utilize the Square-and Multiply algorithm. In fact, your program should get a plaintext from the user to perform encryption (generating the ciphertext from the plaintext) and decryption (generating the original plaintext from the ciphertext).…

Write a Perl program that uses a hash and a large number of operationson the hash. For example, the hash could store people’s names and theirages. A random-number generator could be used to create threecharacter names and ages, which could be added to the hash. When aduplicate name was generated, it would cause an access to the hash butnot add a new element. Rewrite the same program without using hashes.Compare the execution efficiency of the two. Compare the ease ofprogramming and readability of the two.