public static String func ( long x ) {
  int i = 0 ;
  String p = "" ;
  while ( x != 0 ) {
    if ( x % 2 == 0 ) p = "0" + p ;
    else p = "1" + p ;
    x /= 10 ;
  }
  return p ;
}

public static String func ( long x ) { int i = 0 ; String p = " " ; while ( x != 0 ) { if ( x % 2 == 0 ) p = "0" + p ; else p = "1" + p ; x /= 10 ; } return p ; }
(method_declaration (modifiers) type: (type_identifier) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (local_variable_declaration type: (type_identifier) declarator: (variable_declarator name: (identifier) value: (string_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (string_literal) right: (identifier)))) alternative: (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (string_literal) right: (identifier))))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))))) (return_statement (identifier))))