// Helene Martin, CSE 142
// Demonstrates passing arrays as parameters and returning them from methods.
import java.util.*;

public class ArrayExamples {
	public static void main(String[] args) {
		int[] test = {4, 2, 6, 2};
		System.out.println(sum(test));
		
		int[] test2 = {5, 5, 7, 7};
		System.out.println(Arrays.toString(merge(test, test2)));
	}
	
	// returns the sum of the elements in an array
	public static int sum(int[] a) {
		int sum = 0;
		for (int i = 0 ; i < a.length; i++) {
			sum += a[i];
		}
		return sum;
	}
	
	// returns a new array containing values in a followed
	// by values in b
	public static int[] merge(int[] a, int[] b) {
		int[] result = new int[a.length + b.length];
		
		for (int i = 0; i < a.length; i++) {
			result[i] = a[i];
		}
		
		for (int i = 0; i < b.length; i++) {
			result[i + a.length] = b[i];
		}
		
		return result;
	}
}