What is difference between data type and variable?
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Which collection allows null values?
Which data structure is needed to convert infix notations to post fix notations?
Is red black tree balanced?
What are the different types of sorting? Explain the difference between them.
What is quick sort?
What is the space complexity of selection sort?
What is difference between list and set?
Tell me real world example of polymorphism and encapsulation .
How do I remove a value from a list?
Write an algorithm to check if there is a loop in a doubly linked list.
Where is insertion sort used?
Explain singly linked list in short.