What is array and string?
how to delete first node from singly linked list?
Can treeset contain duplicates?
What is the best case complexity of quicksort?
What is the minimum number of nodes that a binary tree can have?
What is a map programming?
What is a spanning tree in data structure?
Do you know what is linear search?
What is raid (redundant array of inexpensive disks)?
State the difference between arrays and linked lists?
Complete structure of hashmap, very detail description, along with the basic coding of the hashmap internal implementation.
When will you use array over arraylist?
How do you find a string is anagram or not?