static boolean checkArray ( int arr [ ] , int n ) {
  int zero = 0 , one = 0 , minusone = 0 , other = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) {
    if ( arr [ i ] == 0 ) zero ++ ;
    else if ( arr [ i ] == 1 ) one ++ ;
    else if ( arr [ i ] == - 1 ) minusone ++ ;
    else other ++ ;
  }
  if ( other > 1 ) return false ;
  else if ( other != 0 && minusone != 0 ) return false ;
  else if ( minusone >= 1 && one == 0 ) return false ;
  return true ;
}

static boolean checkArray ( int arr [ ] , int n ) { int zero = 0 , one = 0 , minusone = 0 , other = 0 ; for ( int i = 0 ; i < n ; i ++ ) { if ( arr [ i ] == 0 ) zero ++ ; else if ( arr [ i ] == 1 ) one ++ ; else if ( arr [ i ] == - 1 ) minusone ++ ; else other ++ ; } if ( other > 1 ) return false ; else if ( other != 0 && minusone != 0 ) return false ; else if ( minusone >= 1 && one == 0 ) return false ; return true ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal)) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))) consequence: (expression_statement (update_expression (identifier))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (decimal_integer_literal))) consequence: (expression_statement (update_expression (identifier))) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (array_access array: (identifier) index: (identifier)) right: (unary_expression operand: (decimal_integer_literal)))) consequence: (expression_statement (update_expression (identifier))) alternative: (expression_statement (update_expression (identifier)))))))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (false)) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (return_statement (false)) alternative: (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (return_statement (false))))) (return_statement (true))))