Question

Write a method that copies n elements from the front of one integer array to the front of another. The two arrays and the number n are all arguments to the method. Include a precondition/postcondition contract as part of your implementation.

Answer 1

A method that copies n elements from the front of one integer array to another can be defined using a for loop.

Step-by-step explanation:

The method can be defined as follows:

public void copyElements(int[] source, int[] target, int n) {
for (int i = 0; i < n; i++) {
target[i] = source[i];
}
}

This method takes in three arguments: the source array, the target array, and the number of elements to be copied, denoted by 'n'.

The method uses a for loop to iterate over the 'n' elements in the source array and copies them to the corresponding positions in the target array.

The precondition for this method is that both the source and target arrays must have at least 'n' elements. The postcondition is that the first 'n' elements of the target array will be the same as the first 'n' elements of the source array.