Which collection allows null values?
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What is the difference between length () and size () of arraylist?
Explain what are the types of collision resolution techniques and the methods used in each of the type?
What is huffman’s algorithm?
What is list and its types?
Can we put null key in hashmap?
Define level of the tree?
What are the types of algorithms?
When would you use a tuple?
State the demerit of linear representation of binary trees?
what is the different between B-tree and B+ tree.
What is comparable interface?
No. of possible ordered trees with n nodes ? Please give formula (if any).