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Consider a dynamic array (like std::vector in C++ or ArrayList in Java) which resizes itself when it's full. Suppose every time the array reaches capacity, it doubles in size. What is the amortized time complexity of inserting n elements into such an array, and why?
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Devops Intern

Interviewed at Copart

3.2★
Aug 2, 2025

Consider a dynamic array (like std::vector in C++ or ArrayList in Java) which resizes itself when it's full. Suppose every time the array reaches capacity, it doubles in size. What is the amortized time complexity of inserting n elements into such an array, and why?

Breaking into the system was challenging at first since I wasn't well versed on SELinux (particularly, to modify a protected /etc/shadow). I couldn't use a (text-based) web browser yet because the network wasn't configured unless I finished a few more steps, so I ended up using my phone's web browser. After this the rest was pretty standard and smooth.
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DevOps Engineer

Interviewed at Boku

3.9★
Jan 31, 2014

Breaking into the system was challenging at first since I wasn't well versed on SELinux (particularly, to modify a protected /etc/shadow). I couldn't use a (text-based) web browser yet because the network wasn't configured unless I finished a few more steps, so I ended up using my phone's web browser. After this the rest was pretty standard and smooth.

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