1 void selectSort(LineList R[], int n)   2 {   3     int i, j, index;   4     for (i = 1; i < n; i++)    5     {   6         index = i;   7         for (j = i + 1; j <= n; j++)   8         {   9             if (R[j].key < R[index].key)  10             {  11                 index = j;  12             }  13         }  14   15         if (index != i)  16         {  17             R[0].key = R[i].key;  18             R[i].key = R[index].key;  19             R[index].key = R[0].key;  20         }  21     }  22 }