c++ 求组合数序列 重写ＭＡＴＬＡＢ P = combs(v,m)

//m < 15, ｑｑ:997737609 void combs ( std :: vector < int >&v , std :: vector < std :: vector < int >> &P , int m ) { //1*n int n = v .size (); if (n == m ) { P .push_back (v ); } else if (m == 1 ) { P

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