Question

Suppose x and y are arrays with 100 elements each. Use the arraycopy

method to copy x[10]...x[25] to y[33]...y[48].

Answer 1

The student is tasked with using the arraycopy method to copy a portion of one array to another in a programming context. Specifically, 16 elements from x[10]...x[25] should be copied to y[33]...y[48] using System.arraycopy(x, 10, y, 33, 16).

Step-by-step explanation:

The question relates to the use of the arraycopy method in programming to copy elements from one array to another. In this case, you are asked to copy a subset of elements from the x array starting at index 10 through index 25 over to the y array, starting at index 33 through index 48.

To accomplish this, you would use the following code:

System.arraycopy(x, 10, y, 33, 16);

This line of code instructs the system to begin copying at the 11th element of x (since arrays are zero-indexed, index 10 is the 11th element) and to paste those elements starting at the 34th element of y (index 33). The last parameter, 16, is the total number of elements to be copied. This is derived from the indices you've provided (25 - 10 + 1).