Does hashmap maintain insertion order?
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How does a selection sort work?
Construct a doubly linked list using a single pointer in each node?
Is array part of collection framework?
There are 8, 15, 13, 14 nodes were there in 4 different trees. Which of them could have formed a full binary tree?
What is comparable interface?
Are linked lists useful?
What is bubble sort algorithm in data structure sort and searching?
Describe the merge sort principle and what will be its time complexity?
Define red-black trees.
What do you mean by data and data structure?
What is the time complexity of arraylist and linked list?
Tell me real world example of polymorphism and encapsulation .