| 1 | 1 | def rebase(input_base, digits, output_base): |
| 2 | | pass |
| 2 | # Edge Case: input base less than 2 |
| 3 | if input_base < 2: |
| 4 | raise ValueError("input base must be >= 2") |
| 5 | |
| 6 | # Edge Case: output base less than 2 |
| 7 | if output_base < 2: |
| 8 | raise ValueError("output base must be >= 2") |
| 9 | |
| 10 | # Edge Case: empty digit sequence |
| 11 | if not digits: |
| 12 | return [0] |
| 13 | |
| 14 | # Edge Case: invalid digits (negative or >= input base) |
| 15 | for digit in digits: |
| 16 | if digit < 0 or digit >= input_base: |
| 17 | raise ValueError("all digits must satisfy 0 <= d < input base") |
| 18 | |
| 19 | # Convert from input base to decimal |
| 20 | decimal_value = 0 |
| 21 | for digit in digits: |
| 22 | decimal_value = decimal_value * input_base + digit |
| 23 | |
| 24 | # Edge Case: zero value conversion |
| 25 | if decimal_value == 0: |
| 26 | return [0] |
| 27 | |
| 28 | # Convert from decimal to output base |
| 29 | output_digits = [] |
| 30 | while decimal_value > 0: |
| 31 | output_digits.insert(0, decimal_value % output_base) |
| 32 | decimal_value //= output_base |
| 33 | |
| 34 | return output_digits |
| 35 | |
| 36 | # Handled Edge Cases: input base less than 2, output base less than 2, empty digit sequence, invalid digits (negative or >= input base), zero value conversion |