fb_help的专栏

外部调用复杂的库

C++ resize二维数组 std::vector<std::vector<unsigned int>> vf_vertor; vector<unsigned int> temp(6); vf_vertor.resize(vertexNum, temp);

时间统计 毫秒级 time_t start, end; double cost; clock_t startTime = clock(); ...//TODO clock_t endTime = clock(); //endTime-startTime统计的是时钟周期，CLOCKS_PER_SEC表示每秒包含的时钟周期 cout << double(endTime - startTime) / CLOCKS_PER_SEC << "s" << endl;