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Merge pull request #298 from yesIamHasi/patch-5

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Create Fischer-Yates_Shuffle.py
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Harshil 2018-05-20 17:49:55 +02:00 committed by GitHub
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'''
The Fisher–Yates shuffle is an algorithm for generating a random permutation of a finite sequence.
For more details visit
wikipedia/Fischer-Yates-Shuffle.
'''
import random
def FYshuffle(LIST):
for i in range(len(LIST)):
a = random.randint(0, len(LIST)-1)
b = random.randint(0, len(LIST)-1)
LIST[a], LIST[b] = LIST[b], LIST[a]
return LIST
if __name__ == '__main__':
integers = [0,1,2,3,4,5,6,7]
strings = ['python', 'says', 'hello', '!']
print ('Fisher-Yates Shuffle:')
print ('List',integers, strings)
print ('FY Shuffle',FYshuffle(integers), FYshuffle(strings))