protected boolean remLink(String field,int len,int n,int e){
  int[] array=(int[])m_links.get(n,field);
  for (int i=0; i < len; ++i) {
    if (array[i] == e) {
      System.arraycopy(array,i + 1,array,i,len - i - 1);
      return true;
    }
  }
  return false;
}

protected boolean remLink ( String field , int len , int n , int e ) { int [ ] array = ( int [ ] ) m_links . get ( n , field ) ; for ( int i = 0 ; i < len ; ++ i ) { if ( array [ i ] == e ) { System . arraycopy ( array , i + 1 , array , i , len - i - 1 ) ; return true ; } } return false ; }
internal method for removing a link from an adjacency list
