1. School of Mathematics and Computation Science; Anqing Normal University; Anqing 246133 China
2. College of Science; Nanjing University of Aeronautics and Astronautics; Nanjing 211106 China
3. School of Mathematics, and Research Center for Complex Systems and Network Sciences; Southeast University; Nanjing 210996 China
4. Department ofMathematics, Faculty of Science; KingAbdulaziz University; Jeddah 21589 Saudi Arabia
5. School of Mathematics and Statistics; Shandong Normal University; Ji'nan 250014 China