title: Swap Two Nibbles Byte
signature: class Solution {
  
      public Integer swapTwoNibblesByte(Integer x) {
source_py: def swap_two_nibbles_byte(x):
      return (((x & 15) << 4) | ((x & 240) >> 4))
source_cpp: int swap_two_nibbles_byte(int x) {
    return ( ( x & 0x0F ) << 4 | ( x & 0xF0 ) >> 4 );
  }
question_info.extension: java
question_info.entry_fn_name: swapTwoNibblesByte
question_info.entry_cls_name: Solution
question_info.test_list: [{"idx": 0, "outputs": 147, "inputs": {"x": 57}}, {"idx": 1, "outputs": 54, "inputs": {"x": 99}}, {"idx": 2, "outputs": 36, "inputs": {"x": 66}}, {"idx": 3, "outputs": 22, "inputs": {"x": 97}}, {"idx": 4, "outputs": 245, "inputs": {"x": 95}}, {"idx": 5, "outputs": 162, "inputs": {"x": 42}}, {"idx": 6, "outputs": 245, "inputs": {"x": 95}}, {"idx": 7, "outputs": 149, "inputs": {"x": 89}}, {"idx": 8, "outputs": 48, "inputs": {"x": 3}}, {"idx": 9, "outputs": 69, "inputs": {"x": 84}}]
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 x, Integer expected){
          try{
              Driver driver = new Driver();
              if (driver.run(x,expected)){
                  return "PASSED";
              }
              return "FAILED";
              
          } catch (Exception exception_obj){
              return exception_obj.getClass().getSimpleName();
          }
  
      }
      public static void main(String[] args) {
          String result;
          result = validateSolution(57, 147);
          System.out.println(String.format("%s%s","TEST-0...",result));    
      
          result = validateSolution(99, 54);
          System.out.println(String.format("%s%s","TEST-1...",result));    
      
          result = validateSolution(66, 36);
          System.out.println(String.format("%s%s","TEST-2...",result));    
      
          result = validateSolution(97, 22);
          System.out.println(String.format("%s%s","TEST-3...",result));    
      
          result = validateSolution(95, 245);
          System.out.println(String.format("%s%s","TEST-4...",result));    
      
          result = validateSolution(42, 162);
          System.out.println(String.format("%s%s","TEST-5...",result));    
      
          result = validateSolution(95, 245);
          System.out.println(String.format("%s%s","TEST-6...",result));    
      
          result = validateSolution(89, 149);
          System.out.println(String.format("%s%s","TEST-7...",result));    
      
          result = validateSolution(3, 48);
          System.out.println(String.format("%s%s","TEST-8...",result));    
      
          result = validateSolution(84, 69);
          System.out.println(String.format("%s%s","TEST-9...",result));    
      
      }
  }
  
  class Driver{
      public boolean run(Integer x, Integer expected){
  
          PLACEHOLDER_CLS_NAME sol = new PLACEHOLDER_CLS_NAME();
          return validateSolution(sol.PLACEHOLDER_FN_NAME(x),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__