title: Count Set Bits In An Integer 1
signature: class Solution {
  
      public Integer countSetBitsInAnInteger1(Integer n) {
source_py: def count_set_bits_in_an_integer_1(n):
      if (n == 0):
          return 0
      else:
          return ((n & 1) + count_set_bits_in_an_integer_1((n >> 1)))
source_cpp: int count_set_bits_in_an_integer_1(int n) {
    if ( n == 0 ) return 0;
    else return ( n & 1 ) + count_set_bits_in_an_integer_1 ( n >> 1 );
  }
question_info.extension: java
question_info.entry_fn_name: countSetBitsInAnInteger1
question_info.entry_cls_name: Solution
question_info.test_list: [{"idx": 0, "outputs": 4, "inputs": {"n": 43}}, {"idx": 1, "outputs": 5, "inputs": {"n": 94}}, {"idx": 2, "outputs": 2, "inputs": {"n": 72}}, {"idx": 3, "outputs": 4, "inputs": {"n": 86}}, {"idx": 4, "outputs": 3, "inputs": {"n": 42}}, {"idx": 5, "outputs": 2, "inputs": {"n": 33}}, {"idx": 6, "outputs": 1, "inputs": {"n": 8}}, {"idx": 7, "outputs": 3, "inputs": {"n": 74}}, {"idx": 8, "outputs": 4, "inputs": {"n": 29}}, {"idx": 9, "outputs": 2, "inputs": {"n": 34}}]
question_info.test_code: import static java.util.Map.entry;  
  import java.util.*;
  import java.lang.*;
  // TESTING CODE 
  // ============================================
  class QuestionEvaluator {
      public static String validateSolution(Integer n, Integer expected){
          try{
              Driver driver = new Driver();
              if (driver.run(n,expected)){
                  return "PASSED";
              }
              return "FAILED";
              
          } catch (Exception exception_obj){
              return exception_obj.getClass().getSimpleName();
          }
  
      }
      public static void main(String[] args) {
          String result;
          result = validateSolution(43, 4);
          System.out.println(String.format("%s%s","TEST-0...",result));    
      
          result = validateSolution(94, 5);
          System.out.println(String.format("%s%s","TEST-1...",result));    
      
          result = validateSolution(72, 2);
          System.out.println(String.format("%s%s","TEST-2...",result));    
      
          result = validateSolution(86, 4);
          System.out.println(String.format("%s%s","TEST-3...",result));    
      
          result = validateSolution(42, 3);
          System.out.println(String.format("%s%s","TEST-4...",result));    
      
          result = validateSolution(33, 2);
          System.out.println(String.format("%s%s","TEST-5...",result));    
      
          result = validateSolution(8, 1);
          System.out.println(String.format("%s%s","TEST-6...",result));    
      
          result = validateSolution(74, 3);
          System.out.println(String.format("%s%s","TEST-7...",result));    
      
          result = validateSolution(29, 4);
          System.out.println(String.format("%s%s","TEST-8...",result));    
      
          result = validateSolution(34, 2);
          System.out.println(String.format("%s%s","TEST-9...",result));    
      
      }
  }
  
  class Driver{
      public boolean run(Integer n, Integer expected){
  
          PLACEHOLDER_CLS_NAME sol = new PLACEHOLDER_CLS_NAME();
          return validateSolution(sol.PLACEHOLDER_FN_NAME(n),expected);
      }
      
      public boolean validateSolution(Integer actual, Integer expected){
          return actual.equals(expected);
      }
  }
  
  
  // SOLUTION CODE
  // ============================================
  PLACEHOLDER_CODE_BODY
question_info.test_case_ids: 0 1 2 3 4 5 6 7 8 9
question_info.commands: java __FILENAME__