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Sum of nodes which are greater than upcoming nodes of linked list

Write an algorithm which are fulfill given of following test cases.

If linked list empty or only one node then result is zero. In a situation only single node of linked list then this case there are no upcoming node.

Compare linked list nodes from first node to last node if current node is greater than next node get the current element value and add to resultant.

Final test condition, If more then two nodes of linked list then check that last node value is greater than of first node in linked list. If greater, then in this situation add last node value in resultant.

Suppose we are inserted the following (4,2,9,3,7,10,5) node in a sequence.

Sum of greater upcoming nodes

Here given code implementation process.


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