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    41   /// The class implements the \e Union-Find data structure.  | 
    41   /// The class implements the \e Union-Find data structure.  | 
    42   /// The union operation uses rank heuristic, while  | 
    42   /// The union operation uses rank heuristic, while  | 
    43   /// the find operation uses path compression.  | 
    43   /// the find operation uses path compression.  | 
    44   /// This is a very simple but efficient implementation, providing  | 
    44   /// This is a very simple but efficient implementation, providing  | 
    45   /// only four methods: join (union), find, insert and size.  | 
    45   /// only four methods: join (union), find, insert and size.  | 
    46   /// For more features see the \ref UnionFindEnum class.  | 
    46   /// For more features, see the \ref UnionFindEnum class.  | 
    47   ///  | 
    47   ///  | 
    48   /// It is primarily used in Kruskal algorithm for finding minimal  | 
    48   /// It is primarily used in Kruskal algorithm for finding minimal  | 
    49   /// cost spanning tree in a graph.  | 
    49   /// cost spanning tree in a graph.  | 
    50   /// \sa kruskal()  | 
    50   /// \sa kruskal()  | 
    51   ///  | 
    51   ///  |