What do you mean by data and data structure?
What is the use of hashtable?
Is arraylist fail fast?
Differentiate between comparable and comparator.
What do you mean by collision in hashing?
Define graph traversals?
What does arrays tostring do?
You want to insert a new item in a binary search tree. How would you do it?
What is hash data type?
For addition and deletion. Which one is most preferred: array list or linked list?
Explain what do you mean by insertion sort, bubble sort and selection sort? Also, explain the differences among the functionalities of the three sorts.
How does shell sort work?
What is dequeue operation?