Can we store null in arraylist?
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What is the time complexity of hashmap get () and put () method?
Does hashmap sort automatically?
What are the advantages of linked list over array (static data structure)?
Define a Deque?
How can we reverse a singly linked list?
Which collection is fail safe?
What is the use of sorting the data?
Why is arraylist used?
What do you mean by tree edge?
What is raid (redundant array of inexpensive disks)?
What is the Difference between treemap and hashmap?
Explain the difference between hashset and hashmap?