introduction of DS
expressions
stacks
queues
linkedlist
100
Define DATA Structure.
DS is arrangement of Elements in Computer
100
what is infix expression 
operator between operands
100
define Stack
Stack is Linear DS

insertion and Deletion possible at one end

100
Define Queue.
Queue is a Linear Data Structure 

insertion possible at Front Deletion possible at rear

100
SLL stands for.
Single Linked LIst
200
first in last out
what is FILO?
200
DLL
Double Linked LIst
300
First In First OUT
what 
300
What is Node in LL?
node is datafeild
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