What is a undirected graph?
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Why is hashmap faster?
Differentiate between an array and an arraylist.
Which is better hashset or treeset?
Define non-terminal nodes in a tree?
What is binary search tree and explain its time complexity?
Differentiate between priorityqueue and treeset.
What are the advantages and disadvantages of linked list?
What is hash data type?
Can you declare an array without assigning the size of an array?
How to reference all the elements in a one-dimension array?
Q # 1 : in which graph algorithm do we start finding vertices that should be first in the topological order and then apploy the fact that every vertex must come before its successors in the topolgical order.
What is arrays copyof?