how to delete first node from singly linked list?
What does sorting an array do?
What do you mean by back edge?
What is doubly linked list?
Explain how to find 3rd element from end in a linked list in one pass?
What is the difference between hashset and treeset?
Does treemap allow null keys?
What is heap tree in data structure?
why boundary tag representation is used?
Are data structures important?
Can hashset contain duplicates?
What is java priority queue?
What is data type and its types?