How can you implement a stack?
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Does hashmap allow duplicate keys?
Can sets contain duplicates?
Differentiate null and void?
what is AVL tree?
Explain what is the bucket size, when the overlapping and collision occur at same time?
Can a binary tree be empty?
Write the steps involved in the insertion and deletion of an element in the stack.
Give the example of validating the parenthesis of expression using stack.
What is sorting and classifying?
Is an arraylist an object?
Which sort is stable?
No. of possible ordered trees with n nodes ? Please give formula (if any).