_________ linked list does not contain a Null Pointer.

__________operation decrement the stack pointer by one word.

The arrangement of plates in a cafeteria is similar to _______.

A linked list in which the last node points to the first node is ____________

A pointer variable which contains the location at the top element of the stack  is called

___________ data structure is used for Reversing a string

In a queue insertion take place at __________ end.

Queue follows _________ principle.