关于数组与链表之间转换效率

public static void main(String args[]) {
		List<String> strList = new ArrayList<String>();
		strList.add("username");
		strList.add("created");
		strList.add("disabled");
		strList.add("locked");
		strList.add("expired");
		long begin = System.currentTimeMillis();
		for(int index = 0; index < 100000; index++) {
			strList.add("duyang");
			strList.remove("duyang");
		}
		long end = System.currentTimeMillis();
		System.out.println("List cost : " + (end-begin));
		
		String[] strArray = new String[] {"username", "created", "disabled", "locked", "expired" };
		begin = System.currentTimeMillis();
		for(int index = 0; index < 100000; index++) {
			List<String> tempList = new ArrayList<String>(Arrays.asList(strArray));
			tempList.add("duyang");
			tempList.remove("duyang");
			strArray = tempList.toArray(new String[]{});
		}
		end = System.currentTimeMillis();
		System.out.println("array cost(include one times Arrays.aslist) : " + (end-begin));
	}

结果为：

List cost : 10

array cost(include one times Arrays.aslist) : 115