What should be done in the base case for this recursive problem?
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Parenthesis are never needed in prefix or postfix expressions. Why?
What is the difference between dictionary and hashtable?
What are some of the best practices relating to the java collection framework?
Differentiate between push and pop?
How can you insert a node in a random location of the linked list?
Can treemap have duplicate values?
Which sorting algorithm is worst?
What are linked lists most commonly used for?
Is hashset thread safe?
In what areas do data structures applied?
Define probing?
write a code for Implementation of stack and queues.