题目内容

下面代码的输出结果为：String[] numbers = {"one","two","three"};System.out.println(numbers[3] + " " + numbers[2] + " " + numbers[1]);

A. one two three
B. three two one
C. 产生编译错误
D. 运行时将抛出异常

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下面代码的输出结果是：int[] testScores = {80, 63, 99, 87,100};System.out.println("Length: " + testScores.length);

A. Length: 4
B. Length: 5
C. Length: 100
D. 产生编译错误

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下面声明那个会产生编译错误：

A. double[][] numbers = {{1,2,3},{7,8},{4,5,6,9}};
B. double[][] numbers = new double[7][];
C. double[][] numbers = new double[][];
D. double[][] numbers = new double[7][3];

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下面代码运行后，变量sum的值是多少int[][] square = new int[3][3];for(int i=0;i<3;i++){square[i][i] =5;}int sum =0;for(int i=0;i<3;i++){for(int j=0;j<3;j++){sum += square[i][j] ;}}

A. 10
B. 15
C. 20
D. 25

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下列程序段的运行结果为int [][]x ={{1,2},{3,4,5},{6,7,8,9}};int[][]y = x;System.out.println(y[2][1]);

A. 3
B. 4
C. 6
D. 7

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下面代码的输出结果为：String[] numbers = {"one","two","three"};System.out.println(numbers[3] + " " + numbers[2] + " " + numbers[1]);

A. one two three B. three two one C. 产生编译错误 D. 运行时将抛出异常

下面代码的输出结果是：int[] testScores = {80, 63, 99, 87,100};System.out.println("Length: " + testScores.length);

下面声明那个会产生编译错误：

下面代码运行后，变量sum的值是多少int[][] square = new int[3][3];for(int i=0;i<3;i++){square[i][i] =5;}int sum =0;for(int i=0;i<3;i++){for(int j=0;j<3;j++){sum += square[i][j] ;}}

下列程序段的运行结果为int [][]x ={{1,2},{3,4,5},{6,7,8,9}};int[][]y = x;System.out.println(y[2][1]);

A. one two three
B. three two one
C. 产生编译错误
D. 运行时将抛出异常