1. Institute of Computational Science and Technology, Guangzhou University, Guangzhou, China
2. School of Computer Science of Information Technology, Qiannan Normal University for Nationalities, Duyun 558000, China
3. Department of Mathematics, GC University, Faisalabad, Pakistan
4. Department of Natural Sciences and Humanities, University of Engineering and Technology, Lahore, Pakistan
5. Department of Mathematics, GC University, Lahore, Pakistan
6. Transportation School of Wuhan University of Technology, Wuhan University of Technology, Wuhan 430070, China