What is bubble sort algorithm?
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Differentiate between hashmap and treemap.
What is the difference between arraylist and array?
Is vector synchronized?
Can hashmap be sorted?
What does arraylist remove do?
What is meant by heap sort?
When ArrayIndexOutOfBoundsException occurs?
If we try to add duplicate key to the hashmap, what will happen?
What is difference between set and map?
Of the following tree structure, which is, efficient considering space and time complexities? (a) Incomplete Binary Tree (b) Complete Binary Tree (c) Full Binary Tree (b) Complete Binary Tree.
Is an arraylist a vector?
Explain data structure