本帖最后由 走在这里 于 2015-6-26 22:37 编辑
class DemoDay5
{
public static void main(String[] args)
{
int a = 10;
int b = 20;
System.out.println("a:"+a+",b:"+b);//a:10,b:20;
change(a,b);
System.out.println("a:"+a+",b:"+b);//a:10.b:20;
int[] arr = {1,2,3,4,5};
change(arr);
System.out.println(arr[1]);
}
public static void change(int a,int b)
{
System.out.println("a:"+a+",b:"+b);//a:10,b:20;
a=b;//a=20
b=a+b;//b=40
System.out.println("a:"+a+",b:"+b);//a:20,b=40;
}
public static void change(int[] arr)
{
for(int x = 0;x<arr.length;x++)
{
if (arr[x]%2==0)
{
System.out.println(arr[x]);
arr[x]*=2;
}
}
}
}
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