char[][] table = new char[10][5]; What is the value of table[2].length? a 0 b 5

Question

char[][] table = new char[10][5];

What is the value of table[2].length?


a 0

b 5

c 10

d 15


Given the following method heading

public static void mystery(int list[], int size)

and the declaration

int[] alpha = new int[75];

Which of the following is a valid call to the method mystery?


a mystery(alpha[75], 50);

b mystery(alpha[], 50);

c mystery(alpha, 40);

d mystery(int[75], alpha)


What is stored in alpha after the following code executes?

int[] alpha = new int[5];

for (int j = 0; j < 5; j++)
{
alpha[j] = 2 * j;

if (j % 2 == 1)
alpha[j - 1] = alpha[j] + j;
}


a alpha = {0, 2, 4, 6, 8}

b alpha = {3, 2, 9, 6, 8}

c alpha = {0, 3, 4, 7, 8}

d alpha = {0, 2, 9, 6, 8}

What is the output of the following Java code?

int[] list = {0, 5, 10, 15, 20};

for (int j = 0; j < 5; j++)
System.out.print(list[j] + " ");
System.out.println();


a 0 1 2 3 4

b 0 5 10 15 20

c 0, 5, 10, 15, 20

d 0 5 10 15

Explanation / Answer

PS: Please rate the answer 1. 5, its a 2 D array. 10 rows and 5 columns. Each row is of length 5 2. mystery(alpha, 40); while passing arrays, you only pass the reference 3. For j = 1, initially alpha[1] = 2, but j%2=1, so alpha[1-1] = alpha[1]+1 => alpha[0] = 3 alpha = {3, 2, 9, 6, 8} 4. You are just printing all the values in the list array with spaces in between them. FInally after everything is done, you are printing a new line. 0 5 10 15 20

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