title: Divisibility 9 Using Bitwise Operators
signature: func divisibility9UsingBitwiseOperators(n int) bool {
test_code: package main
  
  import (
      "fmt"
      "reflect"
      "math"
      "sort"
  )
  
  // SOLUTION CODE
  // ===================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE
  // ===================================
  func validateSolution(actual bool, expected bool) bool {
      return reflect.DeepEqual(actual,expected)
  }
  
  func driver(n int, expected bool) string {
      if validateSolution(PLACEHOLDER_FN_NAME(n),expected) {
              return "PASSED"
      }
      return "FAILED"
  
  }
  
  func main() {
  
      // Use imports to avoid undefined errors
      var _ = reflect.DeepEqual
      _ = math.Abs
      _ = sort.Sort
      result := ""
      result = driver(96, false)
      fmt.Printf("TEST-0...%s\n", result)
      
      result = driver(85, false)
      fmt.Printf("TEST-1...%s\n", result)
      
      result = driver(54, true)
      fmt.Printf("TEST-2...%s\n", result)
      
      result = driver(14, false)
      fmt.Printf("TEST-3...%s\n", result)
      
      result = driver(47, false)
      fmt.Printf("TEST-4...%s\n", result)
      
      result = driver(11, false)
      fmt.Printf("TEST-5...%s\n", result)
      
      result = driver(49, false)
      fmt.Printf("TEST-6...%s\n", result)
      
      result = driver(99, true)
      fmt.Printf("TEST-7...%s\n", result)
      
      result = driver(28, false)
      fmt.Printf("TEST-8...%s\n", result)
      
      result = driver(82, false)
      fmt.Printf("TEST-9...%s\n", result)
      
          
  }
source_py: def divisibility_9_using_bitwise_operators(n):
      if ((n == 0) or (n == 9)):
          return True
      if (n < 9):
          return False
      return divisibility_9_using_bitwise_operators((int((n >> 3)) - int((n & 7))))
source_cpp: bool divisibility_9_using_bitwise_operators(int n) {
    if ( n == 0 || n == 9 ) return true;
    if ( n < 9 ) return false;
    return divisibility_9_using_bitwise_operators ( ( int ) ( n >> 3 ) - ( int ) ( n & 7 ) );
  }