Is treemap synchronized?
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how to search an element in sorted linked list with time complexity is O(log n).
create an singly linked lists and reverse the lists by interchanging the links and not the data?
Why is hashmap faster than arraylist?
Can we store null in arraylist?
Is pointer a variable?
What is an externalizable interface?
How do you get placements?
What is sorting problem?
What are stacks? Give some of its applications.
What is hash value of a string?
Are duplicates allowed in hashmap?
Why is map not a collection?