How does arraylist store data?
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What is hash data type?
What does list clear do?
What does arraylist remove do?
Which interface provides the capability to store objects using a key-value pair?
What is data structure and why we need them?
Explain merge sort algorithms.
Does arraylist shrink?
Is null allowed in list?
What is data structure explain different types of data structures with examples?
Complete structure of hashmap, very detail description, along with the basic coding of the hashmap internal implementation.
Which sorting algorithm is considered the fastest?
Does stringutils isempty check for null?