摘要： 1.If any di>=n then fail2.If there is an odd number of odd degrees then fail3.If there is a di<0 then fail4.If all di=0 then report success5.Reorder S into non-increasing order6.Let k=d17.Remove d1 from S8.Subtract 1 from the first k terms remaining of the new sequence9.Go to step 3 above 阅读全文