qr算法的matlab代码，利用矩阵的QR分解，逐步按递推法构造矩阵的分解序列的过程，只要原始矩阵式非奇异矩阵，则由QR算法就完全确定其分解序列了-qr algorithm matlab code using a QR decomposition of the matrix, step by step process of the recursive method to construct the matrix decomposition sequence, as long as the ori