private static boolean isConcealedSquare ( int [ ] n ) {
  for ( int i = 1 ;
  i <= 9 ;
  i ++ ) {
    if ( n [ 20 - i * 2 ] != i ) return false ;
  }
  return n [ 0 ] == 0 ;
}

private static boolean isConcealedSquare ( int [ ] n ) { for ( int i = 1 ; i <= 9 ; i ++ ) { if ( n [ 20 - i * 2 ] != i ) return false ; } return n [ 0 ] == 0 ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (integral_type) dimensions: (dimensions)) name: (identifier))) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (binary_expression left: (decimal_integer_literal) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) right: (identifier))) consequence: (return_statement (false))))) (return_statement (binary_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (decimal_integer_literal)))))