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Write a threaded program for solving a 15-puzzle. The program takes an initial position and keeps an open list of outstanding positions. This list is sorted on the "goodness" measure of the boards. A simple goodness measure is the Manhattan distance (i.e., the sum of x -displacement and y-displacement of every tile from where it needs to be). This open list is a work queue implemented as a heap. Each thread extracts work (a board) from the work queue, expands it to all possible successors, and inserts the successors into the work queue if it has not already been encountered. Use a hash table (from Problem 7.9) to keep track of entries that have been previously encountered. Plot the speedup of your program with the number of threads. You can compute the speedups for some reference board that is the same for various thread counts.
Problem 7.9 Change the locks to read-write locks in the hash table and use write locks only when inserting an entry into the linked list. Examine the performance of this program as a function of k. Compare the performance to that obtained using regular locks.
Computers on the Internet have an assigned address (location) called its Uniform Resource Locator (URL). The URL is used to identify one computer to the other computers on the Internet.
You are a linguistic working at an e-books distributor. Your management has interest in finding out if commonly used words used in a book make the books more popular, therefore more books would be sold if the number of commonly used words in the book..
With that in mind, how do you think the Americans with Disabilities Act affects website design and design of E-business applications?
Provide a reliable analysis of needs, which must include both business and stakeholder requirements for use of the website .
Write a Program to count number of inversions in an input file of integers using Brute force method
You are working as a Linux technician and you just got a visit from the information security officer (ISO) at your company. Apparently, an unauthorized person gained access to some files on the receptionist's computer. The security officer thinks it ..
A table identifying each subnet, the subnet address, subnet mask in dotted decimal, highest useable address, lowest useable address, and broadcast address.The IP address, subnet mask, and gateway address for the printer in the Sales office and the pr..
Suppose a process changes its locality and size of new working set is too large to be stored into available free memory. What are some options system designers could choose from to handle this situation?
Find the truth set for the following predicates: Hint: answer should be a { set } A) 8/x where x is an integer,the result is in the domain N
Submit a discussion that shares your own research findings on TCP hijacking
Design a class named Clock that contains private data fields for startTime and endTime, no argument constructor that initializes the startTime to the current time, a method named start() that resets the startTime to the given time, a stop() me..
Explain what principle you believe is the MOST essential in developing an input design, and justify your choice.
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