title: Ways Remove One Element Binary String Xor Becomes Zero
signature: int waysRemoveOneElementBinaryStringXorBecomesZero(string str) {
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(int actual, int expected){
      return actual == expected;
  }
  
  string driver(string str, int expected){
      try
      {
          if (validateSolution(PLACEHOLDER_FN_NAME(str), 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("KfcTJNP", 7); 
      cout << "TEST-" << 0 << "..."
           <<  result
           << "\n";
  
      result = driver("05312505872", 1); 
      cout << "TEST-" << 1 << "..."
           <<  result
           << "\n";
  
      result = driver("100111", 2); 
      cout << "TEST-" << 2 << "..."
           <<  result
           << "\n";
  
      result = driver("tDEEhKxrQ", 9); 
      cout << "TEST-" << 3 << "..."
           <<  result
           << "\n";
  
      result = driver("50824233019", 1); 
      cout << "TEST-" << 4 << "..."
           <<  result
           << "\n";
  
      result = driver("10001110010", 5); 
      cout << "TEST-" << 5 << "..."
           <<  result
           << "\n";
  
      result = driver("T SEZaNm MYQ", 12); 
      cout << "TEST-" << 6 << "..."
           <<  result
           << "\n";
  
      result = driver("838415739", 1); 
      cout << "TEST-" << 7 << "..."
           <<  result
           << "\n";
  
      result = driver("01110100", 4); 
      cout << "TEST-" << 8 << "..."
           <<  result
           << "\n";
  
      result = driver("WYQiAey H", 9); 
      cout << "TEST-" << 9 << "..."
           <<  result
           << "\n";
  
      return 0;
  }
source_py: def ways_remove_one_element_binary_string_xor_becomes_zero(str):
      one_count = 0
      zero_count = 0
      n = len(str)
      for i in range(0, n, 1):
          if (str[i] == '1'):
              one_count += 1
          else:
              zero_count += 1
      if ((one_count % 2) == 0):
          return zero_count
      return one_count
source_cpp: int ways_remove_one_element_binary_string_xor_becomes_zero(string str) {
    int one_count = 0, zero_count = 0;
    int n = str . length ( );
    for ( int i = 0;
    i < n;
    i ++ ) if ( str [ i ] == '1' ) one_count ++;
    else zero_count ++;
    if ( one_count % 2 == 0 ) return zero_count;
    return one_count;
  }