algorithm - MST trees checker (kruskal) -


i have implemented kruskal's algorithm in c++ in leda library. so, stored in linked list edges belong mst, , not . so, wanna make checker program checks if edges rigth, checking if mst cycle property applied in tree. have make program leda's dynamic trees. overall question : if have these edges: 

`u1-u2   u3-u5   u2-u3   ...`

how can order them continues , like:

u1-u2 u2-u3 u3-u5


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