title: Turn Off The Rightmost Set Bit
signature: func turnOffTheRightmostSetBit(n int) int {
test_code: package main
  
  import (
      "fmt"
      "reflect"
      "math"
      "sort"
  )
  
  // SOLUTION CODE
  // ===================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE
  // ===================================
  func validateSolution(actual int, expected int) bool {
      return reflect.DeepEqual(actual,expected)
  }
  
  func driver(n int, expected int) 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(9, 8)
      fmt.Printf("TEST-0...%s\n", result)
      
      result = driver(54, 52)
      fmt.Printf("TEST-1...%s\n", result)
      
      result = driver(60, 56)
      fmt.Printf("TEST-2...%s\n", result)
      
      result = driver(32, 0)
      fmt.Printf("TEST-3...%s\n", result)
      
      result = driver(41, 40)
      fmt.Printf("TEST-4...%s\n", result)
      
      result = driver(64, 0)
      fmt.Printf("TEST-5...%s\n", result)
      
      result = driver(4, 0)
      fmt.Printf("TEST-6...%s\n", result)
      
      result = driver(51, 50)
      fmt.Printf("TEST-7...%s\n", result)
      
      result = driver(57, 56)
      fmt.Printf("TEST-8...%s\n", result)
      
      result = driver(92, 88)
      fmt.Printf("TEST-9...%s\n", result)
      
          
  }
source_py: def turn_off_the_rightmost_set_bit(n):
      return (n & (n - 1))
source_cpp: int turn_off_the_rightmost_set_bit(unsigned int n) {
    return n & ( n - 1 );
  }