单项选择题

利用逐点插入法建立序列(50，72，43，85，75，20，35，45，65，30)对应的二叉排序树以后，查找元素30要进行(42)次元素间的比较。

A．4
B．5
C．6
D．7

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从供选择的答案中选出应填入下列叙述中()内的正确答案；设w为一个二维数组，其每个数据元素占用6个字节，行下标i从。到8，列下标i从2到5，则二维数组W的数据元素共占用(A)个字节。w中第6行的元素和第4列的元素共占(B)个字节。若按行顺序存放二维数组w，其起始地址的字节号为100，则二维数组W的最后一个数据元素的起始地址的字节号为(C)，数据元素的起始地址号为(D)。供选择的答案 A：①480 ②192 ③216 ④144 B：①78 ②72 ③66 ④84 C：①310 ②311 ③315 ④314 D：①179 ②178 ③184 ④185

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