public static void swap ( char a [ ] , int i , int j ) {
  char c = a [ j ] ;
  a [ j ] = a [ i ] ;
  a [ i ] = c ;
}

public static void swap ( char a [ ] , int i , int j ) { char c = a [ j ] ; a [ j ] = a [ i ] ; a [ i ] = c ; }
(method_declaration (modifiers) type: (void_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier) dimensions: (dimensions)) (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: (array_access array: (identifier) index: (identifier)))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (array_access array: (identifier) index: (identifier)))) (expression_statement (assignment_expression left: (array_access array: (identifier) index: (identifier)) right: (identifier)))))