C++常用数据集，包括“求赫申伯格矩阵全部特征值的QR方法”、"求解复系数方程组的全选主元高斯\|约当消去法"等。-C++ commonly used data sets, including " seeking Hoeschen Berg matrix QR method all eigenvalues" , " solving equations with complex coefficients Select PCA Gaussian \ | Jordan elim