/**
	 * 交换变量
	 */
	static void changeField() {
		int i = 5;
		int j = 10;
		i = i + j;
		j = i - j;
		i = i - j;
		System.out.println("i:" + i + "\tj:" + j);
	}
	static void changeField1() {
		int i = 5;
		int j = 10;
		int temp = i;
		i = j;
		j = temp;
		System.out.println("i:" + i + "\tj:" + j);
	}
	static void swapField(){
		int i = 1;
		int j = 2;
		i = i^j;
		j = i^j;
		i = i^j;
		System.out.println("i:" + i + "\tj:" + j);
	}