Why does hashset use hashmap?
What happens if we put a key object in a hashmap which exists?
Does arraylist have index?
What is sorting rule in shapes?
Which language is best to learn data structures?
How do you find the second largest element in an array of integers?
Describe the merge sort principle and what will be its time complexity?
Define distributed query and linked server?
Define in brief an array.
What thread means?
Which data structure is needed to convert infix notations to post fix notations?
Explain circular linked list?
How do you declare An array of three pointers to chars