72). Java Arrays

[A]malloc
[B]alloc
[C]new
[D]new malloc

Show Answer

73). Which of these is an incorrect array declaration?

[A]int arr[] = new int[5]
[B]int [] arr = new int[5]
[C]int arr[] = new int[5]
[D]int arr[] = int [5] new

Show Answer

74). What will be the output of the following Java code?
  int arr[] = new int [5];
    System.out.print(arr);

[A]0
[B]value stored in arr[0]
[C]00000
[D]Class name@ hashcode in hexadecimal form

Show Answer

75). Which of these is an incorrect Statement?
  int arr[] = new int [5];
    System.out.print(arr);

[A]It is necessary to use new operator to initialize an array
[B]Array can be initialized using comma separated expressions surrounded by curly braces
[C]Array can be initialized when they are declared
[D]None of the mentioned

Show Answer

76). Which of these is necessary to specify at time of array initialization?
  int arr[] = new int [5];
    System.out.print(arr);

[A]Row
[B]Column
[C]Both Row and Column
[D]None of the mentioned

Show Answer

77). What will be the output of the following Java code?
    class array_output 
    {
        public static void main(String args[]) 
        {
            int array_variable [] = new int[10];
	    for (int i = 0; i < 10; ++i) 
            {
                array_variable[i] = i;
                System.out.print(array_variable[i] + " ");
                i++;
            }
        } 
    }

[A]0 2 4 6 8
[B]1 3 5 7 9
[C]0 1 2 3 4 5 6 7 8 9
[D]1 2 3 4 5 6 7 8 9 10

Show Answer

78). What will be the output of the following Java code?
    class multidimention_array 
    {
        public static void main(String args[])
        {
            int arr[][] = new int[3][];
            arr[0] = new int[1];
            arr[1] = new int[2];
            arr[2] = new int[3];               
	    int sum = 0;
	    for (int i = 0; i < 3; ++i) 
	        for (int j = 0; j < i + 1; ++j)
                    arr[i][j] = j + 1;
	    for (int i = 0; i < 3; ++i) 
	        for (int j = 0; j < i + 1; ++j)
                    sum + = arr[i][j];
	    System.out.print(sum); 	
        } 
    }

[A]11
[B]10
[C]13
[D]14

Show Answer

79). What will be the output of the following Java code?
    class evaluate 
    {
        public static void main(String args[]) 
            {
	        int arr[] = new int[] {0 , 1, 2, 3, 4, 5, 6, 7, 8, 9};
	        int n = 6;
                n = arr[arr[n] / 2];
	        System.out.println(arr[n] / 2);
            } 
    }

[A]3
[B]0
[C]6
[D]1

Show Answer

80). What will be the output of the following Java code?
    class array_output 
    {
        public static void main(String args[]) 
        {
            char array_variable [] = new char[10];
	    for (int i = 0; i < 10; ++i) 
            {
                array_variable[i] = 'i';
                System.out.print(array_variable[i] + "");
            }
        } 
    }

[A]1 2 3 4 5 6 7 8 9 10
[B]0 1 2 3 4 5 6 7 8 9 10
[C]i j k l m n o p q r
[D]i i i i i i i i i i

Show Answer

81). What will be the output of the following Java code?
    class array_output 
    {
        public static void main(String args[]) 
        {
            int array_variable[][] = {{ 1, 2, 3}, { 4 , 5, 6}, { 7, 8, 9}};
            int sum = 0;
            for (int i = 0; i < 3; ++i)
                for (int j = 0; j <  3 ; ++j)
                    sum = sum + array_variable[i][j];
            System.out.print(sum / 5);
        } 
    }

[A]8
[B]9
[C]10
[D]11

Show Answer