Python and C++ each need several steps to copy and output an array

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Python and C++ are two programming languages that the author likes and uses.

Python is known for its development efficiency, while C++ is undoubtedly more efficient.

Let's use a small example to make a comparison.

[title]

An array is known, please copy and output a copy of this array.

We implement it with C++ and Python respectively.

[C++ version]

# include # include # include using namespace std; int main () {vector v1 = {1,2,3,4,5}; vector v2; v2.assign (v1.begin (), v1.end ()); copy (v2.begin (), v2.end (), ostream_iterator (cout, ")); return 0;}

C++ can use vector in STL to represent an array. The copy operation can be achieved using the assign function of vector, which is very simple.

However, if we want to output vector, in addition to using for loops, we need to use the copy algorithm in STL to achieve short and elegant output, which involves infrequently used features such as ostream_iterator.

[Python version]

Alst = [1,2,3,4,5] blst = [] blst.extend (alst) print (blst) # more Pythonic clst = [] clst [:] = alst print (clst)

The Python code is much simpler and clearer. We use list to represent the array, and we can use list's extend method to copy a list. You can also use slicing syntax for replication.

Of course, unlike vector in C++, which can only store the same type of data, Python list can mix and store any type of data. It is indeed convenient and efficient!

Copy and output an array, both Python and C++ can be implemented in just two lines of code.

However, the requirements for the proficiency of code writers are still different. In terms of ease of use, Python still has obvious advantages.

Once upon a time, the phrase "PHP is the best language in the world" was enough to cause war among programmers, but this kind of argument was actually unnecessary.

Each language has its own strengths and has its own excellent performance in different application scenarios.

These are the steps that Python and C++ need to copy and output an array respectively. The editor believes that there are some knowledge points that we may see or use in our daily work. I hope you can learn more from this article. For more details, please follow the industry information channel.