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JavaCollectionsArrayList
Q: What is ArrayList in Java?
A resizable array in java.util. Allows dynamic sizing & O(1) random access.
↳ Sub Q: Is it thread-safe?
No. Use Vector or Collections.synchronizedList().
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🗂️Java Category
└─📂Collections Subcategory
└─📄ArrayList Topic
Q: What is ArrayList?
Resizable array in java.util...
Sub Q Is ArrayList thread-safe?

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P
Priya SharmaDSA Prep
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What is the time complexity of merge sort?
O(n log n) in all cases — best, average, and worst.
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Rahul VermaHR Interviews
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Tell me about yourself (fresher)?
Start with education, highlight key skills, close with why this role excites you.
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Anjali MamClass 12 Physics
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State Faraday's law of electromagnetic induction.
The induced EMF is directly proportional to the rate of change of magnetic flux.
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