Does hashmap allow null keys?
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Explain what are the notations used in evaluation of arithmetic expressions using prefix and postfix forms?
What is space complexity of a program?
Why merge sort is better than insertion sort?
Which data structures are used in bfs and dfs algorithm?
Which is faster list or set?
Why do we need arrays if all the operations that are performed on arrays can be performed on arraylist?
Convert the following infix expression to post fix notation ((a+2)*(b+4)) -1
How do you do binary search?
State the advantages of using postfix notations?
Name few collections map implementations?
Which interfaces are implemented by abstractqueue?
What is the difference between hashset and treeset?