1：if ${\alpha }_j$ 满足(5)和(6)计算 $f\left(m_k+{\alpha }_j\delta m\right)$ end

2： if ${\alpha }_j$ 不满足(5) ${\alpha }_{\max }={\alpha }_j$ , ${\alpha }_j=\frac{1}{2}\left({\alpha }_{\min }+{\alpha }_{\max }\right)$ 返回步1 end

3：if ${\alpha }_j$ 不满足(6) ${\alpha }_{\min }={\alpha }_j$

if ${\alpha }_{\max }=0$ , ${\alpha }_j=10{\alpha }_j$ else ${\alpha }_j=\frac{1}{2}\left({\alpha }_{\min }+{\alpha }_{\max }\right)$ end返回步1

end

4： $j\leftarrow j+1$

end while