LinkedList vs ArrayList Comparator in java Explain the logic for creating a utility to validate XML.(You can explain how you can use Stack to write the logic) Provide a HLD for a URL shortner

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Accepted Answer

Comparison between LinkedList and ArrayList, explanation of Comparator in Java, logic for XML validation using Stack, and HLD for URL shortener.

LinkedList is a doubly linked list while ArrayList is a resizable array
LinkedList is efficient for frequent insertions and deletions, while ArrayList is efficient for random access
Comparator interface in Java is used to define custom sorting logic for objects
XML validation can be done by using a Stack to check the opening and closing tags
URL shortener HLD should include components like a web server, database, URL mapping, and redirection logic

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LinkedList vs ArrayList Comparator in java Explain the logic for creating a utility to validate XML.(You can explain how you can use Stack to write the logic) Provide a HLD for a URL shortner

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