static int multiplicativeOrder ( int A , int N ) {
  if ( GCD ( A , N ) != 1 ) return - 1 ;
  int result = 1 ;
  int K = 1 ;
  while ( K < N ) {
    result = ( result * A ) % N ;
    if ( result == 1 ) return K ;
    K ++ ;
  }
  return - 1 ;
}

static int multiplicativeOrder ( int A , int N ) { if ( GCD ( A , N ) != 1 ) return - 1 ; int result = 1 ; int K = 1 ; while ( K < N ) { result = ( result * A ) % N ; if ( result == 1 ) return K ; K ++ ; } return - 1 ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier)) (formal_parameter type: (integral_type) name: (identifier))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation name: (identifier) arguments: (argument_list (identifier) (identifier))) right: (decimal_integer_literal))) consequence: (return_statement (unary_expression operand: (decimal_integer_literal)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) body: (block (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (parenthesized_expression (binary_expression left: (identifier) right: (identifier))) right: (identifier)))) (if_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) consequence: (return_statement (identifier))) (expression_statement (update_expression (identifier))))) (return_statement (unary_expression operand: (decimal_integer_literal)))))