Why is concurrenthashmap thread safe?
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Differentiate between collection and collections.
Write a program using mergesort technique.
Explain what is a spanning tree?
What will be the output of below code?
State the demerits of linked representation of binary trees?
What is the difference between hashmap and arraylist?
What is an recursive algorithm?
Does hashmap preserve insertion order?
Why is sorting necessary?
Is any implicit arguments are passed to a function when it is called?
What is collections singletonlist?
What are different types of sorting algorithms?