In linked representation of stack the null pointer of the last node in the list signals ........a.Middle value of stackb.In between some valuec.Bottom of the stackd.Beginning of the stackClear my choice
Question
In linked representation of stack the null pointer of the last node in the list signals ........a.Middle value of stackb.In between some valuec.Bottom of the stackd.Beginning of the stackClear my choice
Solution
The null pointer of the last node in the stack signals the c. Bottom of the stack.
Here's why:
A stack is a linear data structure that follows a particular order in which the operations are performed. The order may be LIFO(Last In First Out) or FILO(First In Last Out).
In a linked representation of a stack, we maintain a pointer to the last inserted node (top of the stack). When we want to add (push) a new item, we create a new node, update the top pointer and then update the next pointer of the new node to old top.
When the stack is empty (i.e., when we have popped all elements), the top is null. Therefore, in the linked representation of a stack, the null pointer of the last node signals the bottom of the stack.
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