What are the main differences between the linked list and linear array?
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What is a Queue? Explain its operation with example?
Which is better hashset or treeset?
How to copy an array into another array?
Differentiate between iterator and enumeration.
Differentiate bfs and dfs?
Which is the parent class of linkedhashset class?
What are common data structures?
What is range search?
What is the time complexity of hashmap get () and put () method?
Can hashtable have duplicate values?
Explain the difference between a list and array.
If we try to add duplicate key to the hashmap, what will happen?