751b5327a9
Tonight I learned that random sample where each element in the sampling corpus has an equal likelihood of being chosen is a brand of algorithms known as "reservoir sampling". - Implement random.shuffle(..) - Implement random.choice(..) Surprisingly, candidates are expected to encounter problems like this during interviews.
7 lines
144 B
Python
7 lines
144 B
Python
import random
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def shuffle(xs):
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n = len(xs)
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for i in range(n):
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j = random.randint(i, n - 1)
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xs[i], xs[j] = xs[j], xs[i]
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