What is the difference between hashset and hashtable?
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Is arraylist reference type?
Does arraylist maintain insertion order?
Define a right-skewed binary tree?
What actions are performed when a function returns?
How do you do a mergesort?
Which sorting method is slowest?
What are sorting algorithms used for?
Is sorting a math skill?
Is any implicit arguments are passed to a function when it is called?
Differentiate between priorityqueue and treeset.
Can we create a null as a key for a map collection?
How can one find a cycle in the linked list? IF found how to recognize the cycle and delete that cycle?