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47 lines
1.3 KiB
Python
47 lines
1.3 KiB
Python
import random
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from typing import List
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class Dice:
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NUM_SIDES = 6
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def __init__(self):
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""" Initialize a six sided dice """
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self.sides = list(range(1, Dice.NUM_SIDES + 1))
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def roll(self):
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return random.choice(self.sides)
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def _str_(self):
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return "Fair Dice"
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def throw_dice(num_throws: int, num_dice: int = 2) -> List[float]:
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"""
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Return probability list of all possible sums when throwing dice.
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>>> random.seed(0)
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>>> throw_dice(10, 1)
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[10.0, 0.0, 30.0, 50.0, 10.0, 0.0]
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>>> throw_dice(100, 1)
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[19.0, 17.0, 17.0, 11.0, 23.0, 13.0]
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>>> throw_dice(1000, 1)
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[18.8, 15.5, 16.3, 17.6, 14.2, 17.6]
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>>> throw_dice(10000, 1)
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[16.35, 16.89, 16.93, 16.6, 16.52, 16.71]
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>>> throw_dice(10000, 2)
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[2.74, 5.6, 7.99, 11.26, 13.92, 16.7, 14.44, 10.63, 8.05, 5.92, 2.75]
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"""
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dices = [Dice() for i in range(num_dice)]
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count_of_sum = [0] * (len(dices) * Dice.NUM_SIDES + 1)
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for i in range(num_throws):
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count_of_sum[sum([dice.roll() for dice in dices])] += 1
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probability = [round((count * 100) / num_throws, 2) for count in count_of_sum]
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return probability[num_dice:] # remove probability of sums that never appear
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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