static boolean checkDistinct ( int x ) {
  int last = x % 10 ;
  while ( x > 0 ) {
    if ( x % 10 != last ) return false ;
    x = x / 10 ;
  }
  return true ;
}

static boolean checkDistinct ( int x ) { int last = x % 10 ; while ( x > 0 ) { if ( x % 10 != last ) return false ; x = x / 10 ; } return true ; }
(method_declaration (modifiers) type: (boolean_type) 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: (binary_expression left: (identifier) right: (decimal_integer_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: (identifier))) consequence: (return_statement (false))) (expression_statement (assignment_expression left: (identifier) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (return_statement (true))))