数据�l�构�W�十章选择题及(qi��ng)参考答案[14]_跨考网

 (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) 1�Q�设要将序列�Q?/span>q,h,c,y,p,a,m,s,r,d,f,x�Q?/span> 中的关键码按字母升序重新排序�Q?/span>

　　�Q?/span>1�Q�（ �Q�是初始步长�?/span>4�?/span>shell排序一���扫描的�l�果�Q?/span>

 (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) �Q?/span>2�Q�（ �Q�是�Ҏ(gu��)��序初始徏堆的�l�果�Q?/span>

　　�Q?/span>3�Q�（ �Q�是以第一个元素�ؓ(f��)分界元素的快速一���扫描的�l�果�?/span>

　　从下面供选择的答案中选出正确�{�案填入括号内�?/span> �?a target="_blank">厦门大学 2000 六�?/span>3 �Q?/span>16%/3分）(j��)�?/span>

　　A�Q?/span>f ,h ,c ,d ,p ,a ,m ,q ,r ,s ,y ,x

　　B�Q?/span>p ,a ,c ,s ,q ,d ,f ,x ,r ,h ,m ,y

　　C�Q?/span>a ,d ,c ,r ,f ,q ,m ,s ,y ,p ,h ,x

　　D�Q?/span>h ,c ,q ,p ,a ,m ,s ,r ,d ,f ,x ,y

　　E�Q?/span>h ,q ,c ,y ,a ,p ,m ,s ,d ,r ,f ,x

　　【参考答案】（1�Q?/span>B �Q?/span>2�Q?/span>C �Q?/span>3�Q?/span>A

　　2�Q�对�?/span>n个记录所�l�成的表按关键码排序�?/span>,下列各个常用排序���法的��^均比较次数分别是:二�\归�ƈ排序�?/span>( 1 ),直接插入排序�?/span>( 2 ),快速排序�ؓ(f��)( 3 ),其中,归�ƈ排序和快速排序所需要的辅助存储分别�?/span>( 4 )�?/span>( 5 )�?/span> 【上���h�v�q�学�?/span> 1998 二�?/span>4 �Q?/span>5分）(j��)�?/span>

　　1-5�Q?/span>A�Q?/span>O(1) (t��ng) B�Q?/span>O�Q?/span>nlog2n�Q?/span> (t��ng) C�Q?/span>O�Q?/span>n�Q?/span> (t��ng) D�Q?/span>O�Q?/span>n2�Q?/span>

　　 (t��ng) (t��ng) (t��ng) (t��ng) E�Q?/span>O�Q?/span>n(log2n)2�Q?/span> (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) F�Q?/span>O�Q?/span>log2n�Q?/span>

　　【参考答案】（1�Q?/span>B �Q?/span>2�Q?/span>D �Q?/span>3�Q?/span>B �Q?/span>4�Q?/span>C �Q?/span>5�Q?/span>F

　　3�Q�将两个各有N个元素的有序表归�q�成一个有序表,其最���的比较�ơ数�?/span>( ) 【中�U�院计算所 1998 二�?/span>7 �Q?/span>2分）(j��)】【中国科技大学 1998 二�?/span>7 �Q?/span>2分）(j��)�?/span>

　　A�Q?/span>N (t��ng)  (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng)B�Q?/span>2N-1 (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) C�Q?/span>2N (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) (t��ng) D�Q?/span>N-1

　　【参考答案�?/span>A