A.反復(fù)性 B.遞歸性 C.回溯性 D.都不對(duì)
A.左子樹(shù)根結(jié)點(diǎn)右子樹(shù) B.根結(jié)點(diǎn)左子樹(shù)右子樹(shù) C.左子樹(shù)右子樹(shù)根結(jié)點(diǎn) D.都不對(duì)