| 1 | 1 | def encode(numbers): |
| 2 | | pass |
| 2 | result = [] |
| 3 | for number in numbers: |
| 4 | if number < 0 or number > 0xFFFFFFFF: |
| 5 | raise ValueError("number out of range") |
| 6 | |
| 7 | # Edge Case: Zero value encoding |
| 8 | if number == 0: |
| 9 | result.append(0x00) |
| 10 | continue |
| 11 | |
| 12 | bytes_sequence = [] |
| 13 | while number > 0: |
| 14 | # Take the 7 least significant bits |
| 15 | byte = number & 0x7F |
| 16 | number >>= 7 |
| 17 | bytes_sequence.append(byte) |
| 18 | |
| 19 | # Reverse to get most significant byte first |
| 20 | bytes_sequence.reverse() |
| 21 | |
| 22 | # Set continuation bit for all but the last byte |
| 23 | for i in range(len(bytes_sequence) - 1): |
| 24 | bytes_sequence[i] |= 0x80 |
| 25 | |
| 26 | result.extend(bytes_sequence) |
| 27 | |
| 28 | return result |
| 3 | 29 | |
| 4 | 30 | |
| 5 | 31 | def decode(bytes_): |
| 6 | | pass |
| 32 | if not bytes_: |
| 33 | return [] |
| 34 | |
| 35 | result = [] |
| 36 | number = 0 |
| 37 | in_sequence = False |
| 38 | |
| 39 | for byte in bytes_: |
| 40 | # Check if we have a continuation bit set but no following bytes |
| 41 | # Edge Case: Incomplete byte sequences during decoding |
| 42 | if byte & 0x80: # Continuation bit is set |
| 43 | number = (number << 7) | (byte & 0x7F) |
| 44 | in_sequence = True |
| 45 | else: # Last byte in sequence |
| 46 | number = (number << 7) | (byte & 0x7F) |
| 47 | # Edge Case: Numbers exceeding 32-bit unsigned integer range |
| 48 | if number > 0xFFFFFFFF: |
| 49 | raise ValueError("number out of range") |
| 50 | result.append(number) |
| 51 | number = 0 |
| 52 | in_sequence = False |
| 53 | |
| 54 | # Edge Case: Incomplete sequence at the end |
| 55 | if in_sequence: |
| 56 | raise ValueError("incomplete sequence") |
| 57 | |
| 58 | return result |
| 59 | |
| 60 | # Handled Edge Cases: Zero value encoding, maximum 32-bit integer value, incomplete byte sequences during decoding, empty input sequences, bit boundary conditions |