What is top in stack?
Name few classes that implement collection interface?
Does treemap preserve order?
Define linear probing?
Which is faster hashmap or hashset?
What is link list in data structure?
What is a undirected graph?
What is comparable interface?
For addition and deletion. Which one is most preferred: array list or linked list?
Define ancestor and descendant ?
How do you sort an arraylist?
How will you sort the elements of array in descending order?
Which collection is fail safe?
You want to insert a new item in a binary search tree. How would you do it?
What is array in data structure with example?