PAT 甲级 刷题日记|A 1119 Pre- and Post-order Traversals (30 分)
题目traversalsequences,orpreorderandinordertraversalsequences.However,ifonlythepostorderandpreordertraversalsequencesaregiven,thecorrespondingtreemaynolongerbeunique.Nowgivenapairofpostorderandpreordert