package cn.edu.bjut.chapter5;

public class ExpandArray {
	static int[] expand(int[] m) {
		int[] n = new int[m.length * 2];
		for (int j = 0; j < m.length; j++) {
			n[j] = m[j];
		}

		return n;
	}

	static int[] expand2(int[] m) {
		int[] n = new int[m.length * 2];
		System.arraycopy(m, 0, n, 0, m.length);
		
		return n;
	}
	
	public static void main(String[] args) {
		int[] a = new int[] { 4, 6, 8, 32 };
		int[] b = expand(a); 
		int[] c = expand2(a); 
		
		for (int i = 0; i < b.length; i++) {
			System.out.println(b[i]);
		}
		
		for (int i = 0; i < c.length; i++) {
			System.out.println(c[i]);
		}
	}
}