交换两个数的值，且不引入第三个变量的实现

public class ChangeTwoNumber{public static void main(String[] args){changeTwoNumber(1,2);}/** * 交换两个int数的值 */static void changeTwoNumber(int a, int b){System.out.println("what user input is: a = " + a + ", b = " + b);a = a ^ b;b = a ^ b;a = a ^ b;System.out.println("what the program output is: a = " + a + ", b = " + b);}}