Why is hashmap not thread safe?
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What is the need for path compression?
How does the size of arraylist increases dynamically?
What is the prerequisite for binary searching?
Why heap sort is not used?
How do you insert a new item in a binary search tree?
Define separate chaining?
What is difference between stack and queue?
How can we remove loops in a linked list? What are the functions of fast and slow pointers?
What are red-black trees?
Which is faster array or arraylist?
Does hashmap preserve insertion order?
What is array sort?