title: Fast Multiplication Method Without Using Multiplication Operator Russian Peasants Algorithm
signature: function fastMultiplicationMethodWithoutUsingMultiplicationOperatorRussianPeasantsAlgorithm(a, b) {
test_code: 
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
  
  // TESTING CODE 
  // ============================================
  function convertToString(value) {
      return JSON.stringify(value, function (key, val) {
          if (val instanceof Set) {
              return Array.from(val);
          } return val;});
  }
  
  function validateSolution(actual, expected){
      return convertToString(actual)===convertToString(expected);
  }
  
  function driver(a, b, expected){
      try{
          if (validateSolution(PLACEHOLDER_FN_NAME(a, b),expected)){
              return "PASSED";
          }
          return "FAILED";
      } catch (error) {
        return error.name;
      }
      
  }
      
  function main(){
    let result = '';
    result = driver(4, 33, 132);
    console.log(`TEST-0...${result}`);
  
    result = driver(36, 67, 2412);
    console.log(`TEST-1...${result}`);
  
    result = driver(65, 52, 3380);
    console.log(`TEST-2...${result}`);
  
    result = driver(55, 37, 2035);
    console.log(`TEST-3...${result}`);
  
    result = driver(35, 76, 2660);
    console.log(`TEST-4...${result}`);
  
    result = driver(69, 98, 6762);
    console.log(`TEST-5...${result}`);
  
    result = driver(84, 62, 5208);
    console.log(`TEST-6...${result}`);
  
    result = driver(5, 80, 400);
    console.log(`TEST-7...${result}`);
  
    result = driver(15, 36, 540);
    console.log(`TEST-8...${result}`);
  
    result = driver(67, 84, 5628);
    console.log(`TEST-9...${result}`);
  
    process.exit(0);
  };
  
  if (require.main === module) {
    main();
  }
source_py: def fast_multiplication_method_without_using_multiplication_operator_russian_peasants_algorithm(a, b):
      res = 0
      while (b > 0):
          if (b & 1):
              res = (res + a)
          a = (a << 1)
          b = (b >> 1)
      return res
source_cpp: unsigned int fast_multiplication_method_without_using_multiplication_operator_russian_peasants_algorithm(unsigned int a, unsigned int b) {
    int res = 0;
    while ( b > 0 ) {
      if ( b & 1 ) res = res + a;
      a = a << 1;
      b = b >> 1;
    }
    return res;
  }