static void printEqualModNumbers ( int arr [ ] , int n ) {
  Arrays . sort ( arr ) ;
  int d = arr [ n - 1 ] - arr [ 0 ] ;
  if ( d == 0 ) {
    System . out . println ( "Infinite solution" ) ;
    return ;
  }
  Vector < Integer > v = new Vector < > ( ) ;
  for ( int i = 1 ;
  i * i <= d ;
  i ++ ) {
    if ( d % i == 0 ) {
      v . add ( i ) ;
      if ( i != d / i ) v . add ( d / i ) ;
    }
  }
  for ( int i = 0 ;
  i < v . size ( ) ;
  i ++ ) {
    int temp = arr [ 0 ] % v . get ( i ) ;
    int j ;
    for ( j = 1 ;
    j < n ;
    j ++ ) if ( arr [ j ] % v . get ( i ) != temp ) break ;
    if ( j == n ) System . out . print ( v . get ( i ) + " " ) ;
  }
}

static void printEqualModNumbers ( int arr [ ] , int n ) { Arrays . sort ( arr ) ; int d = arr [ n - 1 ] - arr [ 0 ] ; if ( d == 0 ) { System . out . println ( " Infinite ▁ solution " ) ; return ; } Vector < Integer > v = new Vector < > ( ) ; for ( int i = 1 ; i * i <= d ; i ++ ) { if ( d % i == 0 ) { v . add ( i ) ; if ( i != d / i ) v . add ( d / i ) ; } } for ( int i = 0 ; i < v . size ( ) ; i ++ ) { int temp = arr [ 0 ] % v . get ( i ) ; int j ; for ( j = 1 ; j < n ; j ++ ) if ( arr [ j ] % v . get ( i ) != temp ) break ; if ( j == n ) System . out . print ( v . get ( i ) + " ▁ " ) ; } }
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