What is the difference between length () and size () of arraylist?
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What is the difference between data types and data structures?
Why do we use hashset?
What do you mean by rehashing?
Find duplicates in infinite range. Which data structure to be used to give efficient solution?
What is stack in geography?
Define leaves?
Which is better hashmap or hashtable?
What is the complexity of arraylist?
What are the applications of priority queues?
Explain binary search tree?
What do you mean by tree edge?
What method removes the value from the top of a stack?