What is complexity of bubble sort?
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Does arraylist shrink?
Is hashmap sorted?
Can hashset contain null?
State the difference between persistent and ephemeral data structure?
Describe avl tree or height balanced binary search tree.
Why do we use arrays?
Which list does not allow duplicates?
Why arraylist is not efficient for manipulation?
What is heap with example?
How does a treemap work?
What are the types of collision resolution strategies in open addressing?
Which are the sorted collections?