title: Ways Remove One Element Binary String Xor Becomes Zero
signature: fun waysRemoveOneElementBinaryStringXorBecomesZero(str: String): Int {
test_code: package main
  
  import kotlin.text.*
  import kotlin.math.*
  
  
  // SOLUTION CODE
  // ===================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE
  // ===================================
  fun validateSolution(actual:Int, expected:Int):Boolean{
    return actual.equals(expected)
  }
  fun driver(str: String, expected:Int):String {
      try{
        if (validateSolution(PLACEHOLDER_FN_NAME(str), expected)) {
                return "PASSED"
        }
        return "FAILED"
      } catch (e: Exception){
        return e::class.simpleName as String
      }
  
  }
  
  fun main() {
      var result: String = ""
      result = driver("KfcTJNP", 7)
      println("TEST-0...${result}")
      
      result = driver("05312505872", 1)
      println("TEST-1...${result}")
      
      result = driver("100111", 2)
      println("TEST-2...${result}")
      
      result = driver("tDEEhKxrQ", 9)
      println("TEST-3...${result}")
      
      result = driver("50824233019", 1)
      println("TEST-4...${result}")
      
      result = driver("10001110010", 5)
      println("TEST-5...${result}")
      
      result = driver("T SEZaNm MYQ", 12)
      println("TEST-6...${result}")
      
      result = driver("838415739", 1)
      println("TEST-7...${result}")
      
      result = driver("01110100", 4)
      println("TEST-8...${result}")
      
      result = driver("WYQiAey H", 9)
      println("TEST-9...${result}")
      
          
  }
  
  main()
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;
  }