static int findNumber ( int n ) {
  n -- ;
  int i = 1 ;
  while ( n >= 0 ) {
    n -= i ;
    ++ i ;
  }
  return ( n + i ) ;
}

static int findNumber ( int n ) { n -- ; int i = 1 ; while ( n >= 0 ) { n -= i ; ++ i ; } return ( n + i ) ; }
(method_declaration (modifiers) type: (integral_type) name: (identifier) parameters: (formal_parameters (formal_parameter type: (integral_type) name: (identifier))) body: (block (expression_statement (update_expression (identifier))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (decimal_integer_literal))) (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (identifier))) (expression_statement (update_expression (identifier))))) (return_statement (parenthesized_expression (binary_expression left: (identifier) right: (identifier))))))