What do you know about different sorting algorithms?
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Does concurrenthashmap allow null?
What are data members?
What are the non linear data structure?
What is map entry?
Does hashset allow duplicates?
State the difference between queues and linked lists?
Which interface provides the capability to store objects using a key-value pair?
An array having 100 elements have numbers from 1 to 99 randomly out of which any number is repeated. Find the repeated number in minimum time and space complexity.
How many types of data structures are used?
Parenthesis are never needed in prefix or postfix expressions. Why?
Can we define the size of arraylist?
What are the standard ways in which a graph can be traversed?