static void findArray ( int [ ] q , int n ) {
  int ans ;
  int [ ] arr = new int [ n ] ;
  for ( int k = 0 , j = 0 ;
  j < n / 4 ;
  j ++ ) {
    ans = q [ k ] ^ q [ k + 3 ] ;
    arr [ k + 1 ] = q [ k + 1 ] ^ ans ;
    arr [ k + 2 ] = q [ k + 2 ] ^ ans ;
    arr [ k ] = q [ k ] ^ ( ( arr [ k + 1 ] ) ^ ( arr [ k + 2 ] ) ) ;
    arr [ k + 3 ] = q [ k + 3 ] ^ ( arr [ k + 1 ] ^ arr [ k + 2 ] ) ;
    k += 4 ;
  }
  printArray ( arr , n ) ;
}

static void findArray ( int [ ] q , int n ) { int ans ; int [ ] arr = new int [ n ] ; for ( int k = 0 , j = 0 ; j < n / 4 ; j ++ ) { ans = q [ k ] ^ q [ k + 3 ] ; arr [ k + 1 ] = q [ k + 1 ] ^ ans ; arr [ k + 2 ] = q [ k + 2 ] ^ ans ; arr [ k ] = q [ k ] ^ ( ( arr [ k + 1 ] ) ^ ( arr [ k + 2 ] ) ) ; arr [ k + 3 ] = q [ k + 3 ] ^ ( arr [ k + 1 ] ^ arr [ k + 2 ] ) ; k += 4 ; } printArray ( arr , n ) ; }
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