title: Find Whether A Given Number Is A Power Of 4 Or Not 2
signature: bool findWhetherAGivenNumberIsAPowerOf4OrNot2(int n) {
test_code: #include <algorithm>
  #include <assert.h>
  #include <cstdlib>
  #include <iostream>
  #include <map>
  #include <set>
  #include <string>
  #include <tuple> 
  #include <unordered_map>
  #include <vector>
  #include <math.h>
  #include <cmath>
  #include <bits/stdc++.h>
  #include <numeric>
  #include <functional>
  
  using namespace std;
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  bool validateSolution(bool actual, bool expected){
      return actual == expected;
  }
  
  string driver(int n, bool expected){
      try
      {
          if (validateSolution(PLACEHOLDER_FN_NAME(n), expected)){
              return "PASSED";
          }
          return "FAILED";
      }
      catch (const std::overflow_error& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (const std::runtime_error& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (const std::exception& exception_obj)
      {
          return typeid(exception_obj).name();
      }
      catch (...)
      {
          return "UNK_ERROR";
      }
  }
  
  int main() {
      string result = "";
  
      result = driver(1, true); 
      cout << "TEST-" << 0 << "..."
           <<  result
           << "\n";
  
      result = driver(4, true); 
      cout << "TEST-" << 1 << "..."
           <<  result
           << "\n";
  
      result = driver(64, true); 
      cout << "TEST-" << 2 << "..."
           <<  result
           << "\n";
  
      result = driver(-64, false); 
      cout << "TEST-" << 3 << "..."
           <<  result
           << "\n";
  
      result = driver(128, false); 
      cout << "TEST-" << 4 << "..."
           <<  result
           << "\n";
  
      result = driver(1024, true); 
      cout << "TEST-" << 5 << "..."
           <<  result
           << "\n";
  
      result = driver(97, false); 
      cout << "TEST-" << 6 << "..."
           <<  result
           << "\n";
  
      result = driver(86, false); 
      cout << "TEST-" << 7 << "..."
           <<  result
           << "\n";
  
      result = driver(14, false); 
      cout << "TEST-" << 8 << "..."
           <<  result
           << "\n";
  
      result = driver(99, false); 
      cout << "TEST-" << 9 << "..."
           <<  result
           << "\n";
  
      return 0;
  }
source_py: def find_whether_a_given_number_is_a_power_of_4_or_not_2(n):
      return ((n != 0) and ((n & (n - 1)) == 0) and (not (n & 2863311530)))
source_cpp: bool find_whether_a_given_number_is_a_power_of_4_or_not_2(unsigned int n) {
    return n != 0 && ( ( n & ( n - 1 ) ) == 0 ) && ! ( n & 0xAAAAAAAA );
  }