How many null values are allowed in a set?
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Parenthesis is never required in postfix or prefix expressions, why?
Is boolean a data type?
What is binary tree example?
How does a treemap work?
What are the notations used in Evaluation of Arithmetic Expressions using prefix and postfix forms?
What is the difference between collections class vs collections interface?
Explain in brief a linked list.
What is difference between tree and binary tree?
What is time and space complexity of bubble sort?
What will happen if an array goes out of bounds?
Can hashmap store null values?
What is a linear search?