input: Write a python function to count the frequency of numbers falling into 10-unit buckets from a list of integers.
  ```python
  assert bucket_count([1, 23, 45, 67, 89, 12, 34, 56, 78, 90]) == [1, 2, 2, 2, 2, 1, 0, 0, 0, 0]
  assert bucket_count([10, 20, 30, 40, 50, 60, 70, 80, 90, 100]) == [0, 1, 1, 1, 1, 1, 1, 1, 1, 1]
  assert bucket_count([5, 15, 25, 35, 45, 55, 65, 75, 85, 95]) == [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
output: def bucket_count(numbers):
      buckets = [0] * 10
      for num in numbers:
          bucket_index = num // 10
          if bucket_index < 10:
              buckets[bucket_index] += 1
      return buckets