Q: You want to create a table that looks like this:Which of the following options will work?
A: double[][] table = { {12, -9, 8}, {7, 14}, {-32, -1, 0} };
Q: Which of the following statements assigns the letter S to the third row and first column of a two-dimensional array named strGrid (assuming row-major order)?
A: strGrid[2][0] = "S";
Q: 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: 9
Q: Assume int[][] x = {{1, 2}, {3, 4}, {5, 6}}, what are x.length are x[0].length?
A: 3 and 2
Q: How many elements are in the array matrix (int[][] matrix = new int [5] [5])?
A: 25
Q: Given a 2D array matrix with dimensions M x N, which of the following Java code snippets correctly prints the elements of the array in row-major order (i.e., from left to right, top to bottom)?
A: for (int i = 0; i < M; i++) { for (int j = 0; j < N; j++) { System.out.print(matrix[i][j] + " "); }}
Q: Examine the following:What is in values [3] and [0]?
double[][] values =
{ {1.2, 9.0, 3.2},
{9.2, 0.5, 1.5, -1.2},
{7.3, 7.9, 4.8} } ;
A: There is no such array element
Q: Given:Which of the following fragments prints out every element of items?
int[][] items =
{ {0, 1, 3, 4},
{4, 3, 99, 0, 7 },
{3, 2} } ;
A: for ( int row=0; row < items.length; row++ ){ System.out.println(); for ( int col=0; col < items[row].length; col++ ) System.out.print( items[row][col] + " ");}
Q: Which of the following statements is correct?
A: char[][] charArray = {{'a', 'b'}, {'c', 'd'}};
Q: Given the following: What is the value of things.length ?
double[][] things =
{ {1.2, 9.0},
{9.2, 0.5, 0.0},
{7.3, 7.9, 1.2, 3.9} } ;
A: 3
Q: What is the index variable for the element in the first row and first column of array a?
A: a[0][0]
Q: Assume double[][] x = new double[4][5], what are x.length and x[2].length?
A: 4 and 5
Q: Consider a 2D array in Java with dimensions M x N, where M represents the number of rows and N represents the number of columns. The array is filled with integers such that the element at index (i, j) is denoted by arr[i][j]. The indices are 0-based, i.e., the first row and first column have index 0. Which of the following options correctly represents the code to calculate the sum of all elements in the array?
A: int sum = 0;for (int i = 0; i < M; i++) { for (int j = 0; j < N; j++) { sum += arr[i][j]; }}
Q: What is the output of the following program?
public class Main
{
public static void main(String args[])
{
int arr[][] = new int[4][];
arr[0] = new int[1];
arr[1] = new int[2];
arr[2] = new int[3];
arr[3] = new int[4];
int i, j, k = 0;
for (i = 0; i < 4; i++)
{
for (j = 0; j < i + 1; j++)
{
arr[i][j] = k;
k++;
}
}
for (i = 0; i < 4; i++)
{
for (j = 0; j < i + 1; j++)
{
System.out.print(" " + arr[i][j]);
k++;
}
System.out.println();
}
}
}
A: 01 23 4 56 7 8 9
Q: What will be the output of the following 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: 10