Question

Look at the following array definition.

double [][] sales = new double[10][15];

Write a statement that stores a number in the last column of the last row in the array.

Answer 1

To store a number in the last column of the last row of a two-dimensional array named sales, you would use the statement 'sales[9][14] = 99.99;', considering that array indexing starts at 0.

Step-by-step explanation:

In computer science, an array is a data structure consisting of a collection of elements, of same memory size, each identified by at least one array index or key.

An array is stored such that the position of each element can be computed from its index tuple by a mathematical formula.

To store a number in the last column of the last row of a two-dimensional array named sales, you'll need to consider zero-based indexing used in arrays.

As the array sales is declared with 10 rows and 15 columns, the index of the last element will be one less than the length, so the last row is at index 9 and the last column is at index 14.

Therefore, the correct statement to store a value, for example, 99.99, will look like this: sales[9][14] = 99.99;

This statement assigns the value 99.99 to the element in the 10th row and 15th column of the sales array.