classTest{
publicstaticvoidmain(String[] args){
int a =10;int b =20;
System.out.println("a:"+a+",b:"+b);//方式1:使用第三方变量(开发中用的)int c = a;
a = b;
b = c;
System.out.println("a:"+a+",b:"+b);}}
方法2(排他的論理和(面接用))
classTest{
publicstaticvoidmain(String[] args){
int a =10;int b =20;
System.out.println("a:"+a+",b:"+b);//方式2:用位异或实现(面试用)//左边:a,b,a//右边:a ^ b
a = a ^ b;
b = a ^ b;//a ^ b ^ b = a
a = a ^ b;//a ^ b ^ a = b
System.out.println("a:"+a+",b:"+b);}}
方法3(変数を追加する方法を使用)
classTest{
publicstaticvoidmain(String[] args){
int a =10;int b =20;
System.out.println("a:"+a+",b:"+b);//方式3:用变量相加的做法
a = a + b;//a=30
b = a - b;//b=10
a = a - b;//a=20
System.out.println("a:"+a+",b:"+b);}}
方法4
classTest{
publicstaticvoidmain(String[] args){
int a =10;int b =20;
System.out.println("a:"+a+",b:"+b);//方式4:一句话搞定
b =(a+b)-(a=b);//b=30-20=10,a=20
System.out.println("a:"+a+",b:"+b);}}