异常“显示索引超出了数组界限”

int[] shuzu = { 1, 2, 4, 5, 6, 3, 9, 8, 7 };
for (int i = 0; i < shuzu.Length - 1; i++)
{
for (int j = 0; i < shuzu.Length - 1 - i; j++)
{
if (shuzu[j] > shuzu[j + 1])
{
int shuzu1 = shuzu[j];
shuzu[j] = shuzu[j + 1];
shuzu[j + 1] = shuzu1;
}
}
}
for (int i = 0; i < shuzu.Length; i++)
{
Console.WriteLine(shuzu[i]);

for (int j = 0; i < shuzu.Length - 1 - i; j++)改成for (int j = 0; j < shuzu.Length - 1 - i; j++)
应该是j，你写成了i

肯定会呀 看代码里的注释，
你是不是想实现大小排序？

int[] shuzu = { 1, 2, 4, 5, 6, 3, 9, 8, 7 };
for (int i = 0; i < shuzu.Length - 1; i++)  //满足下面for循环的  i = 0 1 2 3
{
for (int j = 0; i < shuzu.Length - 1 - i; j++)  //当i=上面四个数时，都满足这个循环   j会无限加1  
{
if (shuzu[j] > shuzu[j + 1])
{
int shuzu1 = shuzu[j];
shuzu[j] = shuzu[j + 1];
shuzu[j + 1] = shuzu1;
}
}
}
for (int i = 0; i < shuzu.Length; i++)
{
Console.WriteLine(shuzu[i]);
}