c++ permutation

[Shruthi LS]

Hi all,

I am new to c++. But worked on python. Need to convert the python code snippet to c++. How to simulate the python permutation in c++. Where can find the document for this?

Suggestions are appreciated.

Thank you,
Shruthi LS

[coder777]

Take a look at the reference section of this site. See:

http://www.cplusplus.com/reference/algorithm/next_permutation/

[mnnsa]

you want to find all array permutations ? or just next permution ?

[lastchance]

Python:

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import itertools for L in itertools.permutations( [ 1, 2, 3 ] ): print( L )

(1, 2, 3) (1, 3, 2) (2, 1, 3) (2, 3, 1) (3, 1, 2) (3, 2, 1)

C++

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#include <iostream> #include <algorithm> using namespace std; int main() { int L[] = { 1, 2, 3 }; do { for ( auto e : L ) cout << e << ' '; cout << '\n'; } while( next_permutation( L, L + sizeof L / sizeof L[0] ) ); }

1 2 3 1 3 2 2 1 3 2 3 1 3 1 2 3 2 1

[Shruthi LS]

Thanks a lot for your replies. It had really helped me a lot.