Why do we use different types of data structures?
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What member function places a new node at the end of the linked list?
Explain linked list in short.
Differentiate between singly and doubly linked lists?
What is a Stack? Explain with example?
We know that Arrays are objects so why cannot we write strArray.length()?
Differentiate between priorityqueue and treeset.
What is heap tree?
State the advantages of using postfix notations?
Why do we need sorting?
Does concurrenthashmap allow null?
What is space complexity of a program?
Explain the principle of quicksort. What is its complexity?