2014 选择题_在线真题试卷与模拟练习_2014 选择题

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Consider the following method.

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Assume that the array nums has been declared and initialized as follows.

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What value will be returned as a result of the call mystery(nums) ?

Questions 2-3 refer to the following information.

Consider the following partial class declaration.

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The following declaration appears in another class.

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Which of the following code segments will compile without error?

Which of the following changes to SomeClass will allow other classes to access but not modify the value of myC ?

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Consider the following class declaration.
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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");

Consider the following method that is intended to return the sum of the elements in the array key.
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Which of the following statements should be used to replace /* missing code */ so that sumArray will work as intended?

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.

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

I. data contains only one element.

II. data does not contain the value 5.

III. data contains the value 5 multiple times.

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Consider the following interface and class declarations.
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Which of the following can be used to replace /* expression */ so that getTotalMileage returns the total of the miles traveled for all vehicles in the fleet?

Consider the following method, isSorted, which is intended to return true if an array of integers is sorted in nondecreasing order and to return false otherwise.
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Consider the following incomplete method that is intended to return an array that contains the contents of its first array parameter followed by the contents of its second array parameter.
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Which of the following expressions can be used to replace /* index */ so that append will work as intended?

Consider the following code segment.
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Which of the following represents the contents of arr as a result of executing the code segment?

Assume that myList is an ArrayList that has been correctly constructed and populated with objects. Which of the following expressions produces a valid random index for myList?

Assume that a and b have been defined and initialized as int values. The expression
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is equivalent to which of the following?

Consider the following method.
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Which of the following describes what the method arrayMethod() does to the array nums?

Consider the following method, which is intended to return the element of a 2-dimensional array that is closest in value to a specified number, val.

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Which of the following could be used to replace /* missing code */ so that findClosest will work as intended?

Consider the following Book and AudioBook classes.
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Which of the following best explains why the code segment will not compile?

Consider the following instance variable and method.
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Assume that animals has been instantiated and initialized with the following contents.
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What will the contents of animals be as a result of calling manipulate?

Consider the following code segment.
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What is printed as a result of executing the code segment?

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