关于数组插入元素的问题
public class InsertNumber
{
public static void main(String[] args)
{
int arr[] = new int[100];

arr[0] = 2;
arr[1] = 4;
arr[2] = 8;
arr[3] = 5;
arr[4] = 9;
arr[5] = 11;
arr[6] = 23;
arr[7] = 22;

int temp = 8;

int j = 0;
int srt = 9;

int insert = 100;//要插入的数据

for (j = 0;j < temp ;j++ )
{
if (arr[j] == srt)

break;

for (int i = j;i < temp;i++ )
{
int demo = arr[i];

arr[i] = insert;

arr[i] = arr[i--];
temp++;
}
System.out.println(arr[j]);
}

}
}


我是想在9的位置插入100这个元素

请高手看看那里出错了

[解决办法]
public class InsertNumber
{
public static void main(String[] args)
{
int arr[] = new int[100];

arr[0] = 2;
arr[1] = 4;
arr[2] = 8;
arr[3] = 5;
arr[4] = 9;
arr[5] = 11;
arr[6] = 23;
arr[7] = 22;

int temp = 8;

int j = 0;
int srt = 9;

int insert = 100;//要插入的数据

for (j = 0;j < temp ;j++ )
{
if (arr[j] == srt)
break;
}

for (int i = j;i < temp;i++ )
{
int demo = arr[i];

arr[i] = insert;

arr[i] = arr[i--];
temp++;
}
System.out.println(arr[j]);

}
}


你第二个for循环在第一个for循环里面，break语句直接跳出了，当然不执行了
　改了下，你看看吧
[解决办法]
for(int i=temp-1; i> =j; i--) arr[i+1]=arr[i];
arr[j]=insert;