static int factorial ( int start , int end ) {
  int res = 1 ;
  for ( int i = start ;
  i <= end ;
  i ++ ) res *= i ;
  return res ;
}

static int factorial ( int start , int end ) { int res = 1 ; for ( int i = start ; i <= end ; i ++ ) res *= i ; return res ; }
(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 (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (identifier))) condition: (binary_expression left: (identifier) right: (identifier)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (identifier) right: (identifier)))) (return_statement (identifier))))