how we can program ring topology

Question

Mudasir Ahmed 2015-6-28

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https://ww2.mathworks.cn/matlabcentral/answers/225621-how-we-can-program-ring-topology

评论： Mudasir Ahmed 2015-6-28

采纳的回答： Geoff Hayes

hi.

i want to write a program in which i have a series of variables

x=[x1 x2 x3 x4 x5]

the neighbors of x1 are x2 and x5, for x2 (x1 and x3) for x3 (x2 and x4) for x4 (x3 and x5) for x5 (x4 and x1).

how i program this for sharing of information. means every variable compare its value to its adjacent variable. if any of both have larger value then replaced larger value with by its own value kindly help me.

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Answer 1

Geoff Hayes 2015-6-28

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Mudsair - it seems that you just need some kind of "sliding window" to operate on your array. For example, you could do the following assuming that that x is your input array

 for k=1:length(x)
     % get the left and right indices of k to do the comparison
     if k==1
         idxLeft  = length(x);
         idxRight = k+1;
     else if k==length(x)
         idxLeft  = k-1;
         idxRight = 1;
     else
         idxLeft  = k-1;
         idxRight = k+1;
     end
     % now compare
     if x(k) > x(idxLeft)
         % do something
     end
     if x(k) > x(idxRight)
         % do something
     end
 end