景法 ■ 累法送代算法 Algorithm 18 Power Iteration Algorithm Input: n,A,x,M,E 1:v←x/八x 2:4←vrAv; 3:for k =1 to M do 4:X←AV; 5: u←x/川x; 6: 入←uAu; 7: if -or u-v<then 8: X←-u; 9: break; 10: else 11: V←u 12: 4←入 13: end if 14:end for Output: 入，x 12 ¡ 幂法迭代算法 12