| 1 | 1 | class BowlingGame: |
| 2 | 2 | def __init__(self): |
| 3 | | pass |
| 4 | | |
| 3 | """ |
| 4 | Initialize a new bowling game. |
| 5 | """ |
| 6 | self.rolls = [] |
| 7 | self.current_roll = 0 |
| 8 | |
| 5 | 9 | def roll(self, pins): |
| 6 | | pass |
| 7 | | |
| 10 | """ |
| 11 | Record a roll in the game. |
| 12 | |
| 13 | Args: |
| 14 | pins (int): Number of pins knocked down in this roll. |
| 15 | |
| 16 | Raises: |
| 17 | ValueError: If the number of pins is invalid. |
| 18 | """ |
| 19 | # Edge Case: Invalid number of pins (negative or more than 10) |
| 20 | if pins < 0: |
| 21 | raise ValueError("Pins must be between 0 and 10") |
| 22 | if pins > 10: |
| 23 | raise ValueError("Pins must be between 0 and 10") |
| 24 | |
| 25 | # Edge Case: Game is already over (10 frames completed) |
| 26 | if self.is_game_over(): |
| 27 | raise ValueError("Game is already over") |
| 28 | |
| 29 | # Edge Case: Second roll in frame exceeds 10 pins total (except 10th frame) |
| 30 | # Only check if we have a previous roll and we're not in a new frame |
| 31 | if (len(self.rolls) > 0 and |
| 32 | len(self.rolls) % 2 == 1 and |
| 33 | not self.is_strike(len(self.rolls) - 1) and # Previous roll wasn't a strike |
| 34 | not self.is_tenth_frame() and |
| 35 | self.rolls[-1] + pins > 10): |
| 36 | raise ValueError("Cannot knock down more than 10 pins in a frame") |
| 37 | |
| 38 | self.rolls.append(pins) |
| 39 | |
| 8 | 40 | def score(self): |
| 9 | | pass |
| 41 | """ |
| 42 | Calculate the total score for the game. |
| 43 | |
| 44 | Returns: |
| 45 | int: The total score of the game. |
| 46 | |
| 47 | Raises: |
| 48 | ValueError: If the game is not yet complete. |
| 49 | """ |
| 50 | # Edge Case: Game is not complete yet |
| 51 | if not self.is_game_over(): |
| 52 | raise ValueError("Game is not yet complete") |
| 53 | |
| 54 | score = 0 |
| 55 | roll_index = 0 |
| 56 | |
| 57 | for frame in range(10): |
| 58 | # Edge Case: Strike in regular frames (1-9) |
| 59 | if self.is_strike(roll_index) and frame < 9: |
| 60 | score += 10 + self.strike_bonus(roll_index) |
| 61 | roll_index += 1 |
| 62 | # Edge Case: Spare in regular frames (1-9) |
| 63 | elif self.is_spare(roll_index) and frame < 9: |
| 64 | score += 10 + self.spare_bonus(roll_index) |
| 65 | roll_index += 2 |
| 66 | # Edge Case: Open frame in regular frames (1-9) |
| 67 | elif frame < 9: |
| 68 | score += self.sum_of_balls_in_frame(roll_index) |
| 69 | roll_index += 2 |
| 70 | # Edge Case: Tenth frame handling |
| 71 | else: # frame == 9 |
| 72 | # Edge Case: Strike in tenth frame |
| 73 | if self.is_strike(roll_index): |
| 74 | # Edge Case: Invalid fill balls for strike in tenth frame |
| 75 | if len(self.rolls) < roll_index + 3: |
| 76 | raise ValueError("game not yet complete") |
| 77 | score += 10 + self.rolls[roll_index + 1] + self.rolls[roll_index + 2] |
| 78 | # Edge Case: Spare in tenth frame |
| 79 | elif self.is_spare(roll_index): |
| 80 | # Edge Case: Invalid fill balls for spare in tenth frame |
| 81 | if len(self.rolls) < roll_index + 3: |
| 82 | raise ValueError("game not yet complete") |
| 83 | score += 10 + self.rolls[roll_index + 2] |
| 84 | # Edge Case: Open tenth frame |
| 85 | else: |
| 86 | # Edge Case: Too many rolls in open tenth frame |
| 87 | if roll_index + 2 > len(self.rolls): |
| 88 | raise ValueError("game not yet complete") |
| 89 | score += self.sum_of_balls_in_frame(roll_index) |
| 90 | |
| 91 | return score |
| 92 | |
| 93 | def is_game_over(self): |
| 94 | """ |
| 95 | Check if the game is over (10 frames completed). |
| 96 | |
| 97 | Returns: |
| 98 | bool: True if the game is over, False otherwise. |
| 99 | """ |
| 100 | # Count the frames |
| 101 | frame_count = 0 |
| 102 | roll_index = 0 |
| 103 | |
| 104 | # Process first 9 frames |
| 105 | while frame_count < 9 and roll_index < len(self.rolls): |
| 106 | frame_count += 1 |
| 107 | if self.is_strike(roll_index): |
| 108 | roll_index += 1 |
| 109 | else: |
| 110 | roll_index += 2 |
| 111 | |
| 112 | # Process 10th frame |
| 113 | if frame_count == 9 and roll_index < len(self.rolls): |
| 114 | frame_count += 1 |
| 115 | # If 10th frame is a strike |
| 116 | if self.is_strike(roll_index): |
| 117 | # Need two more rolls |
| 118 | if roll_index + 2 < len(self.rolls): |
| 119 | roll_index += 3 |
| 120 | else: |
| 121 | return False # Not enough rolls |
| 122 | # If 10th frame is a spare |
| 123 | elif (roll_index + 1 < len(self.rolls) and |
| 124 | self.rolls[roll_index] + self.rolls[roll_index + 1] == 10): |
| 125 | # Need one more roll |
| 126 | if roll_index + 2 < len(self.rolls): |
| 127 | roll_index += 3 |
| 128 | else: |
| 129 | return False # Not enough rolls |
| 130 | # If 10th frame is open |
| 131 | else: |
| 132 | if roll_index + 1 < len(self.rolls): |
| 133 | roll_index += 2 |
| 134 | else: |
| 135 | return False # Not enough rolls |
| 136 | |
| 137 | return frame_count >= 10 |
| 138 | |
| 139 | def is_strike(self, roll_index): |
| 140 | """ |
| 141 | Check if a roll is a strike. |
| 142 | |
| 143 | Args: |
| 144 | roll_index (int): Index of the roll to check. |
| 145 | |
| 146 | Returns: |
| 147 | bool: True if the roll is a strike, False otherwise. |
| 148 | """ |
| 149 | # Edge Case: Not enough rolls to determine if it's a strike |
| 150 | if roll_index >= len(self.rolls): |
| 151 | return False |
| 152 | return self.rolls[roll_index] == 10 |
| 153 | |
| 154 | def is_spare(self, roll_index): |
| 155 | """ |
| 156 | Check if a frame is a spare. |
| 157 | |
| 158 | Args: |
| 159 | roll_index (int): Index of the first roll in the frame. |
| 160 | |
| 161 | Returns: |
| 162 | bool: True if the frame is a spare, False otherwise. |
| 163 | """ |
| 164 | # Edge Case: Not enough rolls to determine if it's a spare |
| 165 | if roll_index + 1 >= len(self.rolls): |
| 166 | return False |
| 167 | return self.rolls[roll_index] + self.rolls[roll_index + 1] == 10 |
| 168 | |
| 169 | def strike_bonus(self, roll_index): |
| 170 | """ |
| 171 | Calculate the bonus for a strike. |
| 172 | |
| 173 | Args: |
| 174 | roll_index (int): Index of the strike roll. |
| 175 | |
| 176 | Returns: |
| 177 | int: The bonus points for the strike. |
| 178 | """ |
| 179 | # Edge Case: Not enough rolls to calculate strike bonus |
| 180 | if roll_index + 2 >= len(self.rolls): |
| 181 | return 0 |
| 182 | return self.rolls[roll_index + 1] + self.rolls[roll_index + 2] |
| 183 | |
| 184 | def spare_bonus(self, roll_index): |
| 185 | """ |
| 186 | Calculate the bonus for a spare. |
| 187 | |
| 188 | Args: |
| 189 | roll_index (int): Index of the first roll in the spare frame. |
| 190 | |
| 191 | Returns: |
| 192 | int: The bonus points for the spare. |
| 193 | """ |
| 194 | # Edge Case: Not enough rolls to calculate spare bonus |
| 195 | if roll_index + 2 >= len(self.rolls): |
| 196 | return 0 |
| 197 | return self.rolls[roll_index + 2] |
| 198 | |
| 199 | def sum_of_balls_in_frame(self, roll_index): |
| 200 | """ |
| 201 | Calculate the sum of pins knocked down in a frame. |
| 202 | |
| 203 | Args: |
| 204 | roll_index (int): Index of the first roll in the frame. |
| 205 | |
| 206 | Returns: |
| 207 | int: The sum of pins knocked down in the frame. |
| 208 | """ |
| 209 | # Edge Case: Not enough rolls to calculate frame sum |
| 210 | if roll_index + 1 >= len(self.rolls): |
| 211 | return 0 |
| 212 | return self.rolls[roll_index] + self.rolls[roll_index + 1] |
| 213 | |
| 214 | def is_tenth_frame(self): |
| 215 | """ |
| 216 | Check if we are currently in the tenth frame. |
| 217 | |
| 218 | Returns: |
| 219 | bool: True if we are in the tenth frame, False otherwise. |
| 220 | """ |
| 221 | # Count completed frames |
| 222 | roll_index = 0 |
| 223 | frame_count = 0 |
| 224 | |
| 225 | while frame_count < 10 and roll_index < len(self.rolls): |
| 226 | frame_count += 1 |
| 227 | |
| 228 | # If this is a strike in frames 1-9 |
| 229 | if self.is_strike(roll_index) and frame_count < 10: |
| 230 | roll_index += 1 |
| 231 | # If this is a spare or open frame in frames 1-9 |
| 232 | elif frame_count < 10: |
| 233 | roll_index += 2 |
| 234 | # If this would be the tenth frame |
| 235 | else: |
| 236 | break |
| 237 | |
| 238 | # We are in the tenth frame if we have completed 9 frames |
| 239 | # and have started but not completed the tenth frame |
| 240 | return frame_count == 10 and roll_index < len(self.rolls) |
| 241 | |
| 242 | # Handled Edge Cases: Invalid pin count, game already complete, game not yet complete, |
| 243 | # strike in regular frames, spare in regular frames, open frame in regular frames, |
| 244 | # strike in tenth frame, spare in tenth frame, open tenth frame, invalid fill balls for strike, |
| 245 | # invalid fill balls for spare, too many rolls in open tenth frame, not enough rolls to determine strike, |
| 246 | # not enough rolls to determine spare, not enough rolls to calculate strike bonus, |
| 247 | # not enough rolls to calculate spare bonus, not enough rolls to calculate frame sum |