Created
July 23, 2021 15:38
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很平均的打乱，每一步都符合条件概率
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| def shuffle(lst): | |
| for i in range(len(lst))[::-1]: | |
| rand = random.randint(0, i) | |
| tmp = lst[rand] | |
| lst[rand] = lst[i] | |
| lst[i] = tmp |
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