void swap(int *arr, int i, int j) {
  int temp = arr[i];
  arr[i] = arr[j];
  arr[j] = temp;
}

void bubbleSort(int arr[], int n) {
  for (int i = 0; i < n - 1; i++) {
    for (int j = 0; j < n - i - 1; j++) {
      if (arr[j] > arr[j + 1])
        swap(arr, j, j + 1);
    }
  }
}

const char* clocks[] = {
  "06:00",
  "07:00",
  "08:00",
  "09:00",
  "10:00",
  "11:00",
  "12:00",
  "13:00",
  "14:00",
  "15:00",
  "16:00",
  "17:00",
  "18:00",
  "19:00",
  "20:00",
  "21:00",
  "22:00",
  "23:00",
  "00:00",
  "01:00",
  "02:00",
  "03:00",
  "04:00",
  "05:00",
};



void setup() {
  Serial1.begin(115200);
  Serial1.println("");
  
  for (int i=0; i<24; i++) {
    char *s = (char*)clocks[i];
    strtok(s, ":");
    int n = atoi(s);
    Serial1.print(i); Serial1.print(" ");
    Serial1.print(s); Serial1.print(" -> ");
    Serial1.println(n);
  }
  while (1);
  int arr[] = {5, 6, 1, 3};
  int n = sizeof(arr) / sizeof(arr[0]);

  // Calling bubble sort on array arr
  bubbleSort(arr, n);

  for (int i = 0; i < n; i++)
    Serial1.printf("%d ", arr[i]);
}

void loop() {
  delay(1);
}