title: Ways Remove One Element Binary String Xor Becomes Zero
signature: pub fn ways_remove_one_element_binary_string_xor_becomes_zero(str: String) -> i32 {
test_code: use std::collections::HashMap;
  use std::collections::HashSet;
  use std::cmp::*;
  use std::collections::*;
  use std::fmt::*; 
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  pub fn validate_solution(actual: i32, expected: i32)->bool{
  return actual==expected
  }
  pub fn driver(str: String, expected: i32)->String{
      if validate_solution(PLACEHOLDER_FN_NAME(str), expected) {
        return "PASSED".to_string();
      };
      return "FAILED".to_string();
  
  }
  
  fn main() {
      println!("TEST-0...{}", driver(
        "KfcTJNP".to_string(), 
        7
      ));
      
      println!("TEST-1...{}", driver(
        "05312505872".to_string(), 
        1
      ));
      
      println!("TEST-2...{}", driver(
        "100111".to_string(), 
        2
      ));
      
      println!("TEST-3...{}", driver(
        "tDEEhKxrQ".to_string(), 
        9
      ));
      
      println!("TEST-4...{}", driver(
        "50824233019".to_string(), 
        1
      ));
      
      println!("TEST-5...{}", driver(
        "10001110010".to_string(), 
        5
      ));
      
      println!("TEST-6...{}", driver(
        "T SEZaNm MYQ".to_string(), 
        12
      ));
      
      println!("TEST-7...{}", driver(
        "838415739".to_string(), 
        1
      ));
      
      println!("TEST-8...{}", driver(
        "01110100".to_string(), 
        4
      ));
      
      println!("TEST-9...{}", driver(
        "WYQiAey H".to_string(), 
        9
      ));
      
  }
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;
  }