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Graph serialization

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甜味超标
甜味超标 2020-12-13 05:55

I\'m looking for a simple algorithm to \'serialize\' a directed graph. In particular I\'ve got a set of files with interdependencies on their execution order, and I want to

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  • 予麋鹿
    予麋鹿 (楼主)
    2020-12-13 06:40

    I've come up with a fairly naive recursive algorithm (pseudocode):

    Map> source; // map of each object to its dependency list
List dest; // destination list

function resolve(a):
    if (dest.contains(a)) return;
    foreach (b in source[a]):
        resolve(b);
    dest.add(a);

foreach (a in source):
    resolve(a);



    The biggest problem with this is that it has no ability to detect cyclic dependencies - it can go into infinite recursion (ie stack overflow ;-p). The only way around that that I can see would be to flip the recursive algorithm into an interative one with a manual stack, and manually check the stack for repeated elements.
    


    Anyone have something better?
    
    
    
             
    
                                                        
    
            
            
    
              
                
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