6 When designing continuous storage, the address of the storage unit ( ).
A. must be continuous
B. must not be continuous
C. not necessarily continuous
D. Partially continuous, partially discontinuous
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7 The important criterion for evaluating the performance of an algorithm is ( ).
A. algorithm correctness
B. algorithm is easy to debug
C. algorithm time complexity
D. algorithm is easy to understand
8 If you need to use formal parameters to directly access and modify the actual parameter values, you should describe the formal parameters as () parameters.
A. value parameter
B. real address
C. pointer
D. address parameters
9 For a given n elements, there are () kinds of logical structures that can be constructed.
A. 3
B. 4
C. 5
D. 6
10 In the following program segment, the sentence frequency of x = x + 1; is (). for( i=1;i<=n;i++) for( j=1;j<=n;j++) x=x+1;
A. O(2n)
B. O(n)
C. O(n^2)
D. O(log2n)