1. Department of Mathematics, Faculty of Science, Al-Azhar University, Nasr City 11884, Egypt
2. Department of Statistics and Operations Research, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia
3. Department of Computing, University of Eastern Finland, 70211 Kuopio, Finland
4. Department of Mathematics, Faculty of Science, Benha University, Benha 13511, Egypt