static void rotate ( ) {
  int x = arr [ arr . length - 1 ] , i ;
  for ( i = arr . length - 1 ;
  i > 0 ;
  i -- ) arr [ i ] = arr [ i - 1 ] ;
  arr [ 0 ] = x ;
}

static void rotate ( ) { int x = arr [ arr . length - 1 ] , i ; for ( i = arr . length - 1 ; i > 0 ; i -- ) arr [ i ] = arr [ i - 1 ] ; arr [ 0 ] = x ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (array_access array: (identifier) index: (binary_expression left: (field_access object: (identifier) field: (identifier)) right: (decimal_integer_literal)))) declarator: (variable_declarator name: (identifier))) (for_statement init: (assignment_expression left: (identifier) right: (binary_expression left: (field_access object: (identifier) field: (identifier)) right: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (decimal_integer_literal)) update: (update_expression (identifier)) body: (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (decimal_integer_literal)) right: (identifier)))))