sort character array using insertion sort code example

Example: sort char array c++ using insertion sort

// Sort in ascending order
	int j;
    char k;
    for (int i = 1; i < length; i++)
    {
        k = arr[i];
        j = i - 1;
        while (j >= 0 && arr[j] > k)
        {
            arr[j + 1] = arr[j];
            j--;
        }
        arr[j + 1] = k;
    }
    std::cout << arr << "\n";