超星 - Quiz for Chapter 7 - 查题吧

单选题

Do the following two programs produce the same result? Program I: public class Test {public static void main(String[] args) {int[] list = {1, 2, 3, 4, 5};reverse(list);for (int i = 0; i < list.length; i++)System.out.print(list[i] + " ");} public static void reverse(int[] list) {int[] newList = new int[list.length]; for (int i = 0; i < list.length; i++)newList[i] = list[list.length - 1 - i]; list = newList;} } Program II: public class Test {public static void main(String[] args) {int[] oldList = {1, 2, 3, 4, 5};reverse(oldList);for (int i = 0; i < oldList.length; i++)System.out.print(oldList[i] + " ");} public static void reverse(int[] list) {int[] newList = new int[list.length]; for (int i = 0; i < list.length; i++)newList[i] = list[list.length - 1 - i]; list = newList;} }

A. No
B. Yes

单选题

Given the following statementt[] list = new int[10];st.length has the value _______.

A. 9
B. 11
C. 10
D. The value depends on how many integers are stored in list.

单选题

The __________ method sorts the array scores of the double[] type.

A. java.util.Arrays(scores)
B. java.util.Arrays.sortArray(scores)
C. java.util.Arrays.sort(scores)
D. java.util.Arrays.sorts(scores)

单选题

Assume double[] scores = {1, 2, 3, 4, 5}, what value does java.util.Arrays.binarySearch(scores, 3.5) return?

A. -4
B. -3
C. 4
D. 3

单选题

What is the correct term for numbers[99]?

A. array
B. index variable
C. index
D. indexed variable

单选题

Which of the following is correct to create an array?

A. int[] m = {1, 2, };
B. int[] m = {{1, 2}, {3, 4}};
C. int[] m = {{1, 2}};
D. int[] m = {1, 2, 3};

单选题

Suppose a method p has the following heading: public static int[] p()What return statement may be used in p()?

A. return 1;
B. return int[]{1, 2, 3};
C. return new int[]{1, 2, 3};
D. return {1, 2, 3};

单选题

The reverse method is defined in the textbook. What is list1 after executing the following statements? int[] list1 = {1, 2, 3, 4, 5, 6}; list1 = reverse(list1);

A. list1 is 6 6 6 6 6 6
B. list1 is 6 5 4 3 2 1
C. list1 is 0 0 0 0 0 0
D. list1 is 1 2 3 4 5 6

单选题

The arraycopy method does not allocate memory space for the target array. The target array must already be created with memory space allocateD.

A. true
B. false

单选题

Given the following statementint[] list = new int[10];

A. The array variable list contains a memory address that refers to an array of 10 int values.
B. The array variable list contains ten values of type int.
C. The array variable list contains a memory address that refers to an array of 9 int values.
D. The array variable list contains nine values of type int.

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