1  public int removeElement(int[] a, int elem) {
 2         // write your code here
 3         int index = 0;
 4         for (int i = 0; i < a.length; i++) {
 5             if (a[i] != elem) {
 6                 a[index++] = a[i];
 7             }
 8         }
 9         return index;
10     }