Can we add duplicate keys in a hashmap?
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What is the difference between null and void?
What are the types of binary tree?
What is top in stack?
What is two-dimensional array?
what is the primary advantage of a linked list?
What is the complexity of bubble sort?
Does the minimum spanning tree of a graph give the shortest distance between any 2 specified nodes?
What is the use of heap sort?
What is mean by abstract data type?
in tree construction which is the suitable efficient data structure? (Array, linked list, stack, queue)
Why hashtable is faster than arraylist?
Which sorting algorithm is considered the fastest?