Technical Interview

Added Recently
Data Structures
Google & Microsoft
C/C++ Questions
Java Interview Questions
Quantitative Problems
Featured Articles
Amazon Interview Question
Compaq Interview Question
Technical Interview
Interview Process
Introduction Questions
Object Oriented
Google Pages
Fundamental Questions
Resume Tips
Contact Us
Submit Question/Answer

Which data structure is used to perform recursion?


The answer is Stack.  Stack has the LIFO (Last In First Out) property; it remembers it's ‘caller’. Therefore, it knows to whom it should return when the function has to return.  On the other hand, recursion makes use of the system stack for storing the return addresses of the function calls.
Every recursive function has its equivalent iterative (non-recursive) function. Even when such equivalent iterative procedures are written explicit, stack is to be used.