message: change variable name and comment function
diff: using namespace std;
  -// calculateMaxMin is helper function for iterate k subArray
  +// calculateMaxMin is helper function for iterate k subArray that return max - min
  int calculateMaxMin(vector<int>arr, int start, int k) {
  int maxNum = INT_MIN;
  int minNum = INT_MAX;
  @@ -20,13 +20,15 @@ int maxMin(int k, vector<int> arr) {
  // sort asc for more easy unfairness detection
  sort(arr.begin(), arr.end());
  int len = arr.size();
  - int currMaxMin = INT_MAX; // init with max integer value
  + int unfairness = INT_MAX; // init with max integer value
  for (int i = 0; i < len - k + 1; i++) {
  + // calculate max min and compare with unfairness value
  int compare = calculateMaxMin(arr, i, k);
  - currMaxMin = min(currMaxMin, compare);
  + unfairness = min(unfairness, compare);
  }
  - return currMaxMin;
  +
  + return unfairness;
  }
  int main()
  