static void mySort ( Integer [ ] arr ) {
  int n = arr . length ;
  Arrays . sort ( arr , 0 , n / 2 ) ;
  Arrays . sort ( arr , n / 2 , n , Collections . reverseOrder ( ) ) ;
}

static void mySort ( Integer [ ] arr ) { int n = arr . length ; Arrays . sort ( arr , 0 , n / 2 ) ; Arrays . sort ( arr , n / 2 , n , Collections . reverseOrder ( ) ) ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (array_type element: (type_identifier) dimensions: (dimensions)) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (field_access object: (identifier) field: (identifier)))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (decimal_integer_literal) (binary_expression left: (identifier) right: (decimal_integer_literal))))) (expression_statement (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier) (binary_expression left: (identifier) right: (decimal_integer_literal)) (identifier) (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)))))))