Java 8 times faster with arrays than std::vector in C++. What did I do wrong?

Java 8 times faster with arrays than std::vector in C++. What did I do wrong?

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Correct way to work with vector of arrays

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Converting between C++ std::vector and C array without copying

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How to cheaply assign C-style array to std::vector?

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Initialize std::array with a range (pair of iterators)

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How do I convert an armadillo matrix to a vector of vectors?

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How to get array size stored in unique_ptr?

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How to write a function that can take in an array or a vector?

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