double MainWindow:: get_mean(QVector<double> in)
{
double sum = std::accumulate(in.begin(), in.end(), 0.0);
double mean = sum / in.size(); //均值
return mean;
}
QT中写一个求QVector容器中数据均值的函数
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转载自blog.csdn.net/qq_21449473/article/details/102749746
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