A.3 B.4 C.5 D.6
A.每個(gè)結(jié)點(diǎn)至多有兩棵子樹(shù)的樹(shù) B.哈夫曼樹(shù) C.每個(gè)結(jié)點(diǎn)至多有兩棵子樹(shù)的有序樹(shù) D.每個(gè)結(jié)點(diǎn)只有一棵子樹(shù)
A.A*B+C/D-E+F B.AB*C+D/E-F+ C.ABC+*DE-F+/ D.ABCDED*+/-+