Java实现变量交换的两种方法

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/Point9/article/details/83547651

方法一：引入第三方变量

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public class ChangeVar{
	public static void main(String[] args){
		//交换变量
		 int a = 1;
		int b = 2;
		int c= a; //1
		a = b;//2
		b = c; //1
        System.out.println(a);//2
		System.out.println(b);//1
	}
}

方法二：通过算术运算符实现

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public class ChangeVar{
	public static void main(String[] args){
		//交换变量
		int a = 1;
		int b = 2;
		a = a+b;//3
		b = a-b;//1
		a = a-b;//2
        System.out.println(a);//2
		System.out.println(b);//1
	}
}

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