2008 AP Computer Science A 計算機科學(xué)A真題系列之Practice Exam選擇題免費下載

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2008 計算機科學(xué)A模考選擇題部分免費下載

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部分真題預(yù)覽：

8）Consider the following class declaration.

Which of the following declarations will compile without error?

I. Student a = new Student ();

II. Student b = new Student ("Juan",15);

III. Student c = new Student ("Juan","15");

1. I only
2. II only
3. I and II only
4. I and III only
5. I, II, and III

Questions 10-11 refer to the following information.

Consider the following instance variable and methods. You may assume that data has been initialized with length > 0. The methods are intended to return the index of an array element equal to target, or -1 if no such element exists.

10) For which of the following test cases will the call seqSearchRec (5) always result in an error?

1. data contains only one element
2. data does not contain the value 5
3. data contains the value 5 multiple times

1. I only
2. II only
3. III only
4. I and II only
5. I, II, and III

11)Which of the following should be used to replace // Line 1 in seqSearchRecHelper so that seqSearchRec will work as intended?

1. if (last <= 0) return -1;
2. if (last <0) return -1;
3. if ( last < data.length) return -1;
4. while ( last < data. length)
5. while ( last >= 0)

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