Generalized Lists in Data Structure

Data StructureAnalysis of AlgorithmsAlgorithms

In this section we will see the generalized lists. The generalized list can be defined as below −

A generalized list L is a finite sequence of n elements (n ≥ 0). The element ei is either an atom (single element) or another generalized list. The elements ei that are not atoms, they will be sub-list of L. Suppose L is ((A, B, C), ((D, E), F), G). Here L has three elements sub-list (A, B, C), sub-list ((D, E), F), and atom G. Again sub-list ((D, E), F) has two elements one sub-list (D, E) and atom F.

In C++, we can define the Generalized list structure like below −

class GeneralizedListNode{
   private:
      GeneralizedListNode *next;
      bool tag;
      union{
         char data;
         GeneralizedListNode *down;
      };
};

So if the tag is true, then element represented by the node is a sub-list. The down points to the first node in the sub-list. If tag is false, the element is atom. The next pointer points to the next element in the list. The list will be look like this.

raja
Updated on 10-Aug-2020 08:37:45

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