| 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 pin count (negative or more than 10) |
| 20 | if pins < 0 or pins > 10: |
| 21 | raise ValueError("Pins must be between 0 and 10") |
| 22 | |
| 23 | # Edge Case: Invalid pin count for current frame (more than 10 in non-strike frame) |
| 24 | # Check if this is a second roll in frames 1-9 |
| 25 | total_rolls = len(self.rolls) |
| 26 | if total_rolls % 2 == 1 and total_rolls < 18: # Second roll in frames 1-9 (before 10th frame) |
| 27 | first_roll = self.rolls[-1] # First roll of current frame |
| 28 | # Only validate if first roll wasn't a strike (10 pins) |
| 29 | if first_roll != 10 and first_roll + pins > 10: |
| 30 | raise ValueError("Cannot knock down more than 10 pins in a frame") |
| 31 | |
| 32 | # Edge Case: Game already completed |
| 33 | if self.is_game_complete(): |
| 34 | raise IndexError("Game is already complete") |
| 35 | |
| 36 | self.rolls.append(pins) |
| 37 | self.current_roll += 1 |
| 38 | |
| 8 | 39 | def score(self): |
| 9 | | pass |
| 40 | """ |
| 41 | Calculate the total score for the game. |
| 42 | |
| 43 | Returns: |
| 44 | int: The total score of the game. |
| 45 | |
| 46 | Raises: |
| 47 | ValueError: If the game is not yet complete. |
| 48 | """ |
| 49 | # Edge Case: Game not complete |
| 50 | if not self.is_game_complete(): |
| 51 | raise IndexError("Game is not yet complete") |
| 52 | |
| 53 | total_score = 0 |
| 54 | roll_index = 0 |
| 55 | |
| 56 | for frame in range(10): |
| 57 | # Edge Case: Strike in regular frames (1-9) |
| 58 | if self.is_strike(roll_index) and frame < 9: |
| 59 | total_score += 10 + self.strike_bonus(roll_index) |
| 60 | roll_index += 1 |
| 61 | # Edge Case: Spare in regular frames (1-9) |
| 62 | elif self.is_spare(roll_index) and frame < 9: |
| 63 | total_score += 10 + self.spare_bonus(roll_index) |
| 64 | roll_index += 2 |
| 65 | # Edge Case: Open frame in regular frames (1-9) |
| 66 | elif frame < 9: |
| 67 | total_score += self.sum_of_balls_in_frame(roll_index) |
| 68 | roll_index += 2 |
| 69 | # Edge Case: Tenth frame handling |
| 70 | else: # frame == 9 (10th frame) |
| 71 | # Strike in 10th frame |
| 72 | if self.is_strike(roll_index): |
| 73 | # Edge Case: Not enough rolls for strike bonus in 10th frame |
| 74 | if roll_index + 2 >= len(self.rolls): |
| 75 | raise ValueError("Not enough rolls to calculate strike bonus in 10th frame") |
| 76 | total_score += 10 + self.rolls[roll_index + 1] + self.rolls[roll_index + 2] |
| 77 | # Spare in 10th frame |
| 78 | elif self.is_spare(roll_index): |
| 79 | # Edge Case: Not enough rolls for spare bonus in 10th frame |
| 80 | if roll_index + 2 >= len(self.rolls): |
| 81 | raise ValueError("Not enough rolls to calculate spare bonus in 10th frame") |
| 82 | total_score += 10 + self.rolls[roll_index + 2] |
| 83 | # Open frame in 10th frame |
| 84 | else: |
| 85 | # Edge Case: Not enough rolls in 10th frame |
| 86 | if roll_index + 1 >= len(self.rolls): |
| 87 | raise ValueError("Not enough rolls in 10th frame") |
| 88 | total_score += self.sum_of_balls_in_frame(roll_index) |
| 89 | |
| 90 | # Edge Case: Extra rolls after 10th frame is complete |
| 91 | if not self.is_strike(roll_index) and not self.is_spare(roll_index): |
| 92 | if roll_index + 2 < len(self.rolls): |
| 93 | raise ValueError("Cannot roll after game is over") |
| 94 | elif self.is_spare(roll_index): |
| 95 | if roll_index + 3 < len(self.rolls): |
| 96 | raise ValueError("Cannot roll after game is over") |
| 97 | elif self.is_strike(roll_index): |
| 98 | if roll_index + 3 < len(self.rolls): |
| 99 | raise ValueError("Cannot roll after game is over") |
| 100 | |
| 101 | break |
| 102 | |
| 103 | return total_score |
| 104 | |
| 105 | def is_game_complete(self): |
| 106 | """ |
| 107 | Check if the game is complete. |
| 108 | |
| 109 | Returns: |
| 110 | bool: True if the game is complete, False otherwise. |
| 111 | """ |
| 112 | roll_count = len(self.rolls) |
| 113 | if roll_count < 12: # Minimum rolls needed (all strikes except last frame) |
| 114 | return False |
| 115 | |
| 116 | # Count frames |
| 117 | frame_count = 0 |
| 118 | roll_index = 0 |
| 119 | |
| 120 | while frame_count < 10 and roll_index < roll_count: |
| 121 | if frame_count == 9: # 10th frame |
| 122 | # Strike gets 2 more rolls |
| 123 | if self.rolls[roll_index] == 10: |
| 124 | roll_index += 3 |
| 125 | # Spare gets 1 more roll |
| 126 | elif roll_index + 1 < roll_count and self.rolls[roll_index] + self.rolls[roll_index + 1] == 10: |
| 127 | roll_index += 3 |
| 128 | # Open frame |
| 129 | else: |
| 130 | roll_index += 2 |
| 131 | frame_count += 1 |
| 132 | else: # Frames 1-9 |
| 133 | if self.rolls[roll_index] == 10: # Strike |
| 134 | roll_index += 1 |
| 135 | else: |
| 136 | roll_index += 2 |
| 137 | frame_count += 1 |
| 138 | |
| 139 | return roll_index <= roll_count and frame_count == 10 |
| 140 | |
| 141 | def is_strike(self, roll_index): |
| 142 | """ |
| 143 | Check if a roll is a strike. |
| 144 | |
| 145 | Args: |
| 146 | roll_index (int): Index of the roll to check. |
| 147 | |
| 148 | Returns: |
| 149 | bool: True if the roll is a strike, False otherwise. |
| 150 | """ |
| 151 | # Edge Case: Index out of bounds |
| 152 | if roll_index >= len(self.rolls): |
| 153 | return False |
| 154 | return self.rolls[roll_index] == 10 |
| 155 | |
| 156 | def is_spare(self, roll_index): |
| 157 | """ |
| 158 | Check if two rolls form a spare. |
| 159 | |
| 160 | Args: |
| 161 | roll_index (int): Index of the first roll to check. |
| 162 | |
| 163 | Returns: |
| 164 | bool: True if the two rolls form a spare, False otherwise. |
| 165 | """ |
| 166 | # Edge Case: Index out of bounds or not enough rolls |
| 167 | if roll_index + 1 >= len(self.rolls): |
| 168 | return False |
| 169 | return self.rolls[roll_index] + self.rolls[roll_index + 1] == 10 |
| 170 | |
| 171 | def strike_bonus(self, roll_index): |
| 172 | """ |
| 173 | Calculate the bonus for a strike. |
| 174 | |
| 175 | Args: |
| 176 | roll_index (int): Index of the strike roll. |
| 177 | |
| 178 | Returns: |
| 179 | int: The bonus points for the strike. |
| 180 | """ |
| 181 | # Edge Case: Not enough rolls for strike bonus |
| 182 | if roll_index + 2 >= len(self.rolls): |
| 183 | return 0 |
| 184 | return self.rolls[roll_index + 1] + self.rolls[roll_index + 2] |
| 185 | |
| 186 | def spare_bonus(self, roll_index): |
| 187 | """ |
| 188 | Calculate the bonus for a spare. |
| 189 | |
| 190 | Args: |
| 191 | roll_index (int): Index of the first roll in the spare frame. |
| 192 | |
| 193 | Returns: |
| 194 | int: The bonus points for the spare. |
| 195 | """ |
| 196 | # Edge Case: Not enough rolls for spare bonus |
| 197 | if roll_index + 2 >= len(self.rolls): |
| 198 | return 0 |
| 199 | return self.rolls[roll_index + 2] |
| 200 | |
| 201 | def sum_of_balls_in_frame(self, roll_index): |
| 202 | """ |
| 203 | Calculate the sum of pins knocked down in a frame. |
| 204 | |
| 205 | Args: |
| 206 | roll_index (int): Index of the first roll in the frame. |
| 207 | |
| 208 | Returns: |
| 209 | int: The sum of pins knocked down in the frame. |
| 210 | """ |
| 211 | # Edge Case: Not enough rolls in frame |
| 212 | if roll_index + 1 >= len(self.rolls): |
| 213 | return 0 |
| 214 | # Edge Case: Invalid frame (more than 10 pins) |
| 215 | if self.rolls[roll_index] + self.rolls[roll_index + 1] > 10: |
| 216 | raise ValueError("Invalid frame: more than 10 pins knocked down") |
| 217 | return self.rolls[roll_index] + self.rolls[roll_index + 1] |
| 218 | |
| 219 | # Handled Edge Cases: Invalid pin count, game already completed, game not complete, |
| 220 | # strike in regular frames, spare in regular frames, open frame in regular frames, |
| 221 | # tenth frame handling, not enough rolls for strike bonus in 10th frame, |
| 222 | # not enough rolls for spare bonus in 10th frame, not enough rolls in 10th frame, |
| 223 | # extra rolls after 10th frame is complete, index out of bounds, not enough rolls, |
| 224 | # not enough rolls for strike bonus, not enough rolls for spare bonus, |
| 225 | # not enough rolls in frame, invalid frame (more than 10 pins) |