int main()
{
    int i,j,temp=0;
    int a[5]={8,3,1,12,7};
    cout<<"排序前："<<"  ";
    for (i=0;i<5;i++)
    {
        cout<<a[i];
    }
    for (j=0; j<5;j++)
    {
        for (i=0;i<5-j ;i++ )
        {
            if (a[i]>a[i+1])
            {
                temp=a[i];
                a[i]=a[i+1];
                a[i+1]=temp;
            }
        }
    }
    cout<<"排序后：";
    for (i=0;i<5 ;i++ )
    {
        cout<<a[i];
    }
    return 0;

}

for (j=0; j<4;j++)
    {
        for (i=0;i<4-j ;i++ )
        {
            if (a[i]>a[i+1])
            {
                temp=a[i];
                a[i]=a[i+1];
                a[i+1]=temp;
            }
        }
    }