static boolean check ( String s ) {
  for ( int i = 0 ;
  i < s . length ( ) - 1 ;
  i ++ ) if ( s . charAt ( i ) == s . charAt ( i + 1 ) ) return true ;
  return false ;
}

static boolean check ( String s ) { for ( int i = 0 ; i < s . length ( ) - 1 ; i ++ ) if ( s . charAt ( i ) == s . charAt ( i + 1 ) ) return true ; return false ; }
(method_declaration (modifiers) type: (boolean_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (type_identifier) name: (identifier))) body: (block (for_statement init: (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) condition: (binary_expression left: (identifier) right: (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list)) right: (decimal_integer_literal))) update: (update_expression (identifier)) body: (if_statement condition: (parenthesized_expression (binary_expression left: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (identifier))) right: (method_invocation object: (identifier) name: (identifier) arguments: (argument_list (binary_expression left: (identifier) right: (decimal_integer_literal)))))) consequence: (return_statement (true)))) (return_statement (false))))