Is arraylist reference type?
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What are skew trees? For a tree with 4 nodes draw all possible binary? Generalize for n nodes how many binary trees can be drawn?
What is difference between static and dynamic array?
What the principle of quick sort and its complexity?
Differentiate between priorityqueue and treeset.
What do you mean by quadratic probing?
Does treemap preserve order?
What is the use of space complexity and time complexity?
What is a pass in bubble sort?
Where the data structures are used?
Can hashmap have duplicate keys?
applications of stacks and their uses?
Define degree of the node?