| 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.frame_scores = [] |
| 8 | self.current_frame = 0 |
| 9 | self.frame_rolls = [] |
| 10 | |
| 11 | def is_game_complete(self): |
| 12 | """ |
| 13 | Check if the game is complete. |
| 14 | |
| 15 | Returns: |
| 16 | bool: True if the game is complete, False otherwise |
| 17 | """ |
| 18 | # For the 10th frame (current_frame == 9), check if all required rolls are done |
| 19 | if self.current_frame == 9: |
| 20 | # If we have 3 rolls in the 10th frame, game is complete |
| 21 | if len(self.frame_rolls) == 3: |
| 22 | return True |
| 23 | # If we have 2 rolls and it's not a spare or strike, game is complete |
| 24 | elif len(self.frame_rolls) == 2: |
| 25 | if self.frame_rolls[0] != 10 and sum(self.frame_rolls) != 10: |
| 26 | return True |
| 27 | # If it's a spare or strike, we need more rolls |
| 28 | else: |
| 29 | return False |
| 30 | # If we have 1 roll, we need more rolls (either 1 more for open frame or 2 more for strike) |
| 31 | elif len(self.frame_rolls) == 1: |
| 32 | return False |
| 33 | # If we have 0 rolls but 10 frame scores, it means 10th frame was completed |
| 34 | elif len(self.frame_rolls) == 0 and len(self.frame_scores) == 10: |
| 35 | return True |
| 36 | |
| 37 | # If we have 10 frame scores and we've moved past the 10th frame, the game is complete |
| 38 | elif len(self.frame_scores) == 10 and self.current_frame >= 10: |
| 39 | return True |
| 40 | |
| 41 | return False |
| 42 | |
| 5 | 43 | def roll(self, pins): |
| 6 | | pass |
| 7 | | |
| 44 | """ |
| 45 | Record a roll in the game. |
| 46 | |
| 47 | Args: |
| 48 | pins (int): Number of pins knocked down in this roll |
| 49 | |
| 50 | Raises: |
| 51 | ValueError: If pins is negative or greater than 10 |
| 52 | IndexError: If game is already over |
| 53 | """ |
| 54 | # Edge Case: Invalid number of pins |
| 55 | if pins < 0: |
| 56 | raise ValueError("Pins cannot be negative") |
| 57 | |
| 58 | # Edge Case: Too many pins in a single roll |
| 59 | if pins > 10: |
| 60 | raise ValueError("Pins cannot be more than 10") |
| 61 | |
| 62 | # Edge Case: Game already completed |
| 63 | if self.is_game_complete(): |
| 64 | raise IndexError("Game has already ended") |
| 65 | |
| 66 | # Edge Case: Tenth frame special rules |
| 67 | if self.current_frame == 9: # Tenth frame |
| 68 | # Add roll to current frame |
| 69 | self.frame_rolls.append(pins) |
| 70 | |
| 71 | # If it's the first roll of the tenth frame |
| 72 | if len(self.frame_rolls) == 1: |
| 73 | self.rolls.append(pins) |
| 74 | return |
| 75 | |
| 76 | # If it's the second roll of the tenth frame |
| 77 | elif len(self.frame_rolls) == 2: |
| 78 | # Validate that the frame total doesn't exceed 10 (unless first roll was a strike) |
| 79 | if self.frame_rolls[0] != 10 and (self.frame_rolls[0] + pins) > 10: |
| 80 | raise ValueError("Frame cannot have more than 10 pins") |
| 81 | |
| 82 | self.rolls.append(pins) |
| 83 | # Check if we need a third roll (spare or strike) |
| 84 | if self.frame_rolls[0] == 10 or sum(self.frame_rolls) == 10: |
| 85 | # Need a third roll for spare or second strike |
| 86 | return |
| 87 | else: |
| 88 | # Open frame, game over |
| 89 | self.frame_scores.append(sum(self.frame_rolls)) |
| 90 | self.frame_rolls = [] # Clear the frame rolls |
| 91 | self.current_frame += 1 # Move past the 10th frame |
| 92 | return |
| 93 | |
| 94 | # If it's the third roll of the tenth frame |
| 95 | elif len(self.frame_rolls) == 3: |
| 96 | # Validate the third roll based on what the second roll was |
| 97 | # If first roll was a strike, we need to validate second + third rolls |
| 98 | if self.frame_rolls[0] == 10: |
| 99 | # If second roll was also a strike, third roll can be anything up to 10 |
| 100 | if self.frame_rolls[1] == 10: |
| 101 | if pins > 10: |
| 102 | raise ValueError("Pins cannot be more than 10") |
| 103 | # If second roll was not a strike, validate that second + third <= 10 |
| 104 | else: |
| 105 | if self.frame_rolls[1] + pins > 10: |
| 106 | raise ValueError("Frame cannot have more than 10 pins") |
| 107 | # If first roll was not a strike but we got a spare, third roll can be anything up to 10 |
| 108 | else: |
| 109 | if pins > 10: |
| 110 | raise ValueError("Pins cannot be more than 10") |
| 111 | |
| 112 | self.rolls.append(pins) |
| 113 | self.frame_scores.append(sum(self.frame_rolls)) |
| 114 | self.frame_rolls = [] # Clear the frame rolls |
| 115 | self.current_frame += 1 # Move past the 10th frame |
| 116 | return |
| 117 | |
| 118 | # Regular frames (1-9) |
| 119 | self.frame_rolls.append(pins) |
| 120 | self.rolls.append(pins) |
| 121 | |
| 122 | # If we have a strike |
| 123 | if pins == 10 and len(self.frame_rolls) == 1: |
| 124 | self.frame_scores.append(10) |
| 125 | self.current_frame += 1 |
| 126 | self.frame_rolls = [] |
| 127 | return |
| 128 | |
| 129 | # If we have two rolls in a frame |
| 130 | if len(self.frame_rolls) == 2: |
| 131 | frame_total = sum(self.frame_rolls) |
| 132 | |
| 133 | # Edge Case: Invalid frame total |
| 134 | if frame_total > 10 and self.frame_rolls[0] != 10: |
| 135 | raise ValueError("Frame cannot have more than 10 pins") |
| 136 | |
| 137 | self.frame_scores.append(frame_total) |
| 138 | self.current_frame += 1 |
| 139 | self.frame_rolls = [] |
| 140 | |
| 8 | 141 | def score(self): |
| 9 | | pass |
| 142 | """ |
| 143 | Calculate the total score for the game. |
| 144 | |
| 145 | Returns: |
| 146 | int: The total score for the game |
| 147 | |
| 148 | Raises: |
| 149 | IndexError: If the game is not yet complete |
| 150 | """ |
| 151 | # Edge Case: Game not complete |
| 152 | if not self.is_game_complete(): |
| 153 | raise IndexError("Game is not yet complete") |
| 154 | |
| 155 | total_score = 0 |
| 156 | roll_index = 0 |
| 157 | |
| 158 | # Score first 9 frames |
| 159 | frame = 0 |
| 160 | while frame < 9 and roll_index < len(self.rolls): |
| 161 | if self.rolls[roll_index] == 10: # Strike |
| 162 | # Add 10 plus next two rolls |
| 163 | if roll_index + 2 < len(self.rolls): |
| 164 | total_score += 10 + self.rolls[roll_index + 1] + self.rolls[roll_index + 2] |
| 165 | roll_index += 1 |
| 166 | elif roll_index + 1 < len(self.rolls) and self.rolls[roll_index] + self.rolls[roll_index + 1] == 10: # Spare |
| 167 | # Add 10 plus next roll |
| 168 | if roll_index + 2 < len(self.rolls): |
| 169 | total_score += 10 + self.rolls[roll_index + 2] |
| 170 | roll_index += 2 |
| 171 | else: # Open frame |
| 172 | if roll_index + 1 < len(self.rolls): |
| 173 | total_score += self.rolls[roll_index] + self.rolls[roll_index + 1] |
| 174 | roll_index += 2 |
| 175 | frame += 1 |
| 176 | |
| 177 | # Score tenth frame - add all rolls in the tenth frame |
| 178 | # The tenth frame score is already calculated and stored in frame_scores[9] |
| 179 | if len(self.frame_scores) > 9: |
| 180 | total_score += self.frame_scores[9] |
| 181 | else: |
| 182 | # This shouldn't happen if game is complete, but just in case |
| 183 | for i in range(roll_index, len(self.rolls)): |
| 184 | total_score += self.rolls[i] |
| 185 | |
| 186 | return total_score |
| 187 | |
| 188 | # Handled Edge Cases: Invalid number of pins, too many pins, game already completed, tenth frame special rules, invalid frame total, game not complete, tenth frame incomplete |