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3Â¥2008-09-18 18:39:13
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ÎÒÒ²ÕýÔÚ±àд¹ØÓÚСÊÀ½çÄ£Ð͵Äfortran³ÌÐò£¬¿ÉÊǵóöÀ´µÄ½á×ÜÊDz»¶Ô£¬Îҵķ½ÏòÊÇ·ÇÏßÐÔ¶¯Á¦Ñ§£¬ÄÜ·ñ°ÑÄãµÄ³ÌÐò¸øÎÒ·¢Ï£¬huiy_chen@stu.snnu.edu.cn£¬²»Ê¤¸Ð¼¤£¡ÎҵĴúÂëÈçÏ£º program main implicit none c ****************************************************** c creat a small-world network c ns is the number of edges c n is the number of vertex c kh is the nearest edges that connected to vertex i c ****************************************************** integer i,j,ns,n,jj,kh,k real*8 p integer G(1:10,1:10) real*8 R(1:100) ns=0 write(*,*)"n=" read(*,*) n write(*,*)"kh=" read(*,*) kh write(*,*)"p=" read(*,*)p do j=1,n do i=1,n G(i,j)=0 end do end do do i=1,n do jj=1,kh j=i+jj if(j.gt.n)j=j-n G(i,j)=1 G(j,i)=1 ns=ns+1 end do end do c****************************************************************** c add edges randomly,ns denotes the degree of vertex c****************************************************************** do i=1,n-kh-1 do j=i+kh+1,n if(G(i,j).eq.1.d0) cycle call random_seed() do k=1,1000 call random_number(R(k)) if(R(k).le.p)then G(i,j)=1 G(j,i)=1 ns=ns+1 write(*,*) ns end if end do end do end do end |
6Â¥2008-11-12 10:55:48














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