变量交换
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package java151123;
import org.junit.Test;
/**
* @author LiZheng
*
* 交换变量
* 比较exchangVar1 ,exchangVar2
*/
public class ExchangeVarDemo {
public static void main(String[] args) {
int x = 3;
int y = 4;
System.out.println(x);
System.out.println(y);
int temp;
temp = x;
x = y;
y = temp;
System.out.println(x);
System.out.println(y);
}
@Test
public void exchangVar1() {
int x = 7;
int y = 8;
System.out.println(x);
System.out.println(y);
x = x + y;
y = x - y;
x = x - y;
System.out.println(x);
System.out.println(y);
}
@Test
public void exchangVar2() {
int x = 7;
int y = 8;
System.out.println(x);
System.out.println(y);
x = x ^ y;
y = x ^ y;
x = x ^ y;
System.out.println(x);
System.out.println(y);
}
}
import org.junit.Test;
/**
* @author LiZheng
*
* 交换变量
* 比较exchangVar1 ,exchangVar2
*/
public class ExchangeVarDemo {
public static void main(String[] args) {
int x = 3;
int y = 4;
System.out.println(x);
System.out.println(y);
int temp;
temp = x;
x = y;
y = temp;
System.out.println(x);
System.out.println(y);
}
@Test
public void exchangVar1() {
int x = 7;
int y = 8;
System.out.println(x);
System.out.println(y);
x = x + y;
y = x - y;
x = x - y;
System.out.println(x);
System.out.println(y);
}
@Test
public void exchangVar2() {
int x = 7;
int y = 8;
System.out.println(x);
System.out.println(y);
x = x ^ y;
y = x ^ y;
x = x ^ y;
System.out.println(x);
System.out.println(y);
}
}
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