用QR 法方程组合SVD分解进行最小二乘解方程组，并比较三种方法的稳定性以及准确性-Combined with the QR equation SVD decomposition least squares solution of equations, and compare the stability and accuracy of three methods

这是一个计算数字平台长度的程序，如： 运行时输入： 111122333，结果为: 4 　　　　　　　　 1111 注：本程序在dos中或windows98中运行。-This is a calculation procedure of the digital platform length, such as: Runtime: 111 122 333 results for: 41111 Note: This program is run in DOS or in wi