title: Find The Number Occurring Odd Number Of Times
signature: function find_the_number_occurring_odd_number_of_times(arr, arr_size)
source_py: def find_the_number_occurring_odd_number_of_times(arr, arr_size):
      for i in range(0, arr_size):
          count = 0
          for j in range(0, arr_size):
              if (arr[i] == arr[j]):
                  count += 1
          if ((count % 2) != 0):
              return arr[i]
      return (- 1)
source_cpp: int find_the_number_occurring_odd_number_of_times(vector<int> arr, int arr_size) {
    for ( int i = 0;
    i < arr_size;
    i ++ ) {
      int count = 0;
      for ( int j = 0;
      j < arr_size;
      j ++ ) {
        if ( arr [ i ] == arr [ j ] ) count ++;
      }
      if ( count % 2 != 0 ) return arr [ i ];
    }
    return - 1;
  }
question_info.test_code: 
  
  -- SOLUTION CODE
  -- ============================================
  PLACEHOLDER_CODE_BODY
  
  -- TESTING CODE 
  -- ============================================
  function isCorrect(actual, expected)
      if type(expected) ~= type(actual) then
          return false
      end
      
      if type(expected) == 'table' then
          for k,v_expected in pairs(expected) do
              
              if actual[k] == nil then
                  return false
              end
              local v_actual = actual[k]
              if not isCorrect(v_actual, v_expected) then
                  return false
              end
              actual[k]=nil
          end
      
          if next(actual) then 
              return false
          end
          return true
      else
          return actual == expected
      end
  end
  
  function validateSolution(actual, expected)
      return isCorrect(actual,expected)
  end
  
  function driver(arr, arr_size, expected)
      local exec_result;
      local status, error_msg = pcall(function () 
          exec_result=PLACEHOLDER_FN_NAME(arr, arr_size) 
      end)
      if status then
          if validateSolution(exec_result,expected) then
              return "PASSED"
          end
          return "FAILED"
      else
          return string.format("ERROR=%s",string.gsub(error_msg,".*:[%d]+: ",""))
      end
  end
      
  function main()
      result = driver({1, 5, 5, 8, 14, 15, 17, 17, 18, 23, 23, 25, 26, 35, 36, 39, 51, 53, 56, 56, 60, 62, 64, 64, 65, 66, 67, 68, 71, 75, 80, 82, 83, 88, 89, 91, 91, 92, 93, 95, 99}, 31, 1)
      print(string.format("TEST-0...%s",result))
  
      result = driver({-56, 98, 44, 30, -88, 18, 60, 86, 4, 16, 10, 64, -22, -86, -66, -16, 70, -44, 98, 78, -96, -66, 92, 10, 40, -16}, 19, -56)
      print(string.format("TEST-1...%s",result))
  
      result = driver({0, 0, 0, 0, 0, 1, 1, 1}, 6, 0)
      print(string.format("TEST-2...%s",result))
  
      result = driver({36, 11, 83, 41, 42, 14, 46, 89, 91, 96, 57, 42, 74, 73, 9, 26, 79, 40, 31, 69, 44, 39, 14, 92, 34, 20, 52, 47, 14}, 25, 36)
      print(string.format("TEST-3...%s",result))
  
      result = driver({-84, -84, -84, -78, -66, -62, -62, -36, -24, -10, -10, -8, -4, -2, 12, 14, 20, 22, 36, 42, 46, 66, 84, 96, 96, 98}, 23, -84)
      print(string.format("TEST-4...%s",result))
  
      result = driver({1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1}, 19, 1)
      print(string.format("TEST-5...%s",result))
  
      result = driver({11, 12, 14, 28, 42, 48, 50, 58, 67, 74, 86, 89, 95}, 7, 11)
      print(string.format("TEST-6...%s",result))
  
      result = driver({52, -56, -6, 74, 10, 68, 74, 10, 16, -80, 82, -32, 6, -6, 82, 20}, 11, 52)
      print(string.format("TEST-7...%s",result))
  
      result = driver({0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}, 31, 0)
      print(string.format("TEST-8...%s",result))
  
      result = driver({4, 80, 92}, 1, 4)
      print(string.format("TEST-9...%s",result))
  
  end
  
  main()
question_info.entry_cls_name: Solution
question_info.test_list: [{"idx": 0, "outputs": 1, "inputs": {"arr": [1, 5, 5, 8, 14, 15, 17, 17, 18, 23, 23, 25, 26, 35, 36, 39, 51, 53, 56, 56, 60, 62, 64, 64, 65, 66, 67, 68, 71, 75, 80, 82, 83, 88, 89, 91, 91, 92, 93, 95, 99], "arr_size": 31}}, {"idx": 1, "outputs": -56, "inputs": {"arr": [-56, 98, 44, 30, -88, 18, 60, 86, 4, 16, 10, 64, -22, -86, -66, -16, 70, -44, 98, 78, -96, -66, 92, 10, 40, -16], "arr_size": 19}}, {"idx": 2, "outputs": 0, "inputs": {"arr": [0, 0, 0, 0, 0, 1, 1, 1], "arr_size": 6}}, {"idx": 3, "outputs": 36, "inputs": {"arr": [36, 11, 83, 41, 42, 14, 46, 89, 91, 96, 57, 42, 74, 73, 9, 26, 79, 40, 31, 69, 44, 39, 14, 92, 34, 20, 52, 47, 14], "arr_size": 25}}, {"idx": 4, "outputs": -84, "inputs": {"arr": [-84, -84, -84, -78, -66, -62, -62, -36, -24, -10, -10, -8, -4, -2, 12, 14, 20, 22, 36, 42, 46, 66, 84, 96, 96, 98], "arr_size": 23}}, {"idx": 5, "outputs": 1, "inputs": {"arr": [1, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1], "arr_size": 19}}, {"idx": 6, "outputs": 11, "inputs": {"arr": [11, 12, 14, 28, 42, 48, 50, 58, 67, 74, 86, 89, 95], "arr_size": 7}}, {"idx": 7, "outputs": 52, "inputs": {"arr": [52, -56, -6, 74, 10, 68, 74, 10, 16, -80, 82, -32, 6, -6, 82, 20], "arr_size": 11}}, {"idx": 8, "outputs": 0, "inputs": {"arr": [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1], "arr_size": 31}}, {"idx": 9, "outputs": 4, "inputs": {"arr": [4, 80, 92], "arr_size": 1}}]
question_info.extension: lua
question_info.entry_fn_name: find_the_number_occurring_odd_number_of_times
question_info.test_case_ids: 0 1 2 3 4 5 6 7 8 9
question_info.commands: lua __FILENAME__