- 利用第三个变量交换数值
package leif.tests; public class Test { public static void main(String[] args) { int a = 3; int b = 5; int temp = a; a = b; b = temp; System.out.println(a); System.out.println(b); } }
- 利用两个数求和然后相减的方式进行数据交换，弊端在于如果数值过大的话会损失精度
package leif.tests; public class Test { public static void main(String[] args) { int a = 3; int b = 5; a = a + b; b = a - b; a = a - b; System.out.println(a); System.out.println(b); } }
- 利用位运算的方式进行数据的交换，思想原理：一个数异或同一个数两次，结果还是原来的数，而且不会超出范围
package leif.tests; public class Test { public static void main(String[] args) { int a = 3; int b = 5; a = a ^ b; b = a ^ b; a = a ^ b; System.out.println(a); System.out.println(b); } }
- 在输出时直接交换变量
package leif.tests; public class Test { public static void main(String[] args) { int a = 3; int b = 5; System.out.println(b); System.out.println(a); } }
