static int isPowerOfFour ( int n ) {
  int count = 0 ;
  int x = n & ( n - 1 ) ;
  if ( n > 0 && x == 0 ) {
    while ( n > 1 ) {
      n >>= 1 ;
      count += 1 ;
    }
    return ( count % 2 == 0 ) ? 1 : 0 ;
  }
  return 0 ;
}

static int isPowerOfFour ( int n ) { int count = 0 ; int x = n & ( n - 1 ) ; if ( n > 0 && x == 0 ) { while ( n > 1 ) { n >>= 1 ; count += 1 ; } return ( count % 2 == 0 ) ? 1 : 0 ; } return 0 ; }
(method_declaration (modifiers) type: (integral_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: (decimal_integer_literal))) (local_variable_declaration type: (integral_type) declarator: (variable_declarator name: (identifier) value: (binary_expression left: (identifier) right: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal)))))) (if_statement condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (binary_expression left: (identifier) right: (decimal_integer_literal)))) consequence: (block (while_statement condition: (parenthesized_expression (binary_expression left: (identifier) right: (decimal_integer_literal))) body: (block (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))) (expression_statement (assignment_expression left: (identifier) right: (decimal_integer_literal))))) (return_statement (ternary_expression condition: (parenthesized_expression (binary_expression left: (binary_expression left: (identifier) right: (decimal_integer_literal)) right: (decimal_integer_literal))) consequence: (decimal_integer_literal) alternative: (decimal_integer_literal))))) (return_statement (decimal_integer_literal))))