static int getGCD ( int [ ] a ) {
  int gcd = a [ 0 ] ;
  int l = a . length ;
  for ( int i = 1 ;
  i < l ;
  i ++ ) {
    gcd = getGCD ( gcd , a [ i ] ) ;
  }
  return gcd ;
}

static int getGCD ( int [ ] a ) { int gcd = a [ 0 ] ; int l = a . length ; for ( int i = 1 ; i < l ; i ++ ) { gcd = getGCD ( gcd , a [ i ] ) ; } return gcd ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (integral_type) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (array_access array: (identifier) index: (decimal_integer_literal)))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (identifier) field: (identifier)))) (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 (expression_statement (assignment_expression left: (identifier) right: (method_invocation name: (identifier) arguments: (argument_list (identifier) (array_access array: (identifier) index: (identifier)))))))) (return_statement (identifier))))