*/
class ArrayDemo
{
public static void main(String[]args)
{
int []arr={2,4,3,1,7};
ArrayFunction.bian(arr);
int index= ArrayFunction.max(arr);
System.out.println(index);
int locate=ArrayFunction.locate(arr,3);
System.out.println(locate );
}
}
class ArrayFunction
{
public static void bian(int[]arr)
{
for (int i=0;i<arr.length ;i++ )
{
System.out.print(arr[i]);
}
System.out.println();
}
public static int max(int []arr)
{
int max=arr[0];
int index=0;
if (arr==null||arr.length==0)
{
System.out.println("输入的数组错误");
return -1;
}else
{
for (int i=0;i<arr.length ;i++ )
{
if (arr[i]>max)
{
max=arr[i];
index=i;
}
}
return index;
}
}
public static int locate (int []arr,int a)
{
int index=0;
for (int i=0;i<arr.length ;i++ )
{
if (arr[i]==a)
{
index=i;
}
}
return index;
}