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  1. from random import randrange
  2.  
  3. def fy_iter(n):
  4.  swaps = {}
  5.  def getswapval(k):
  6.   if k in swaps: return swaps[k]
  7.   return k
  8.  for i in range(n):
  9.   k = randrange(i,n)
  10.   yield getswapval(k)
  11.   swaps[k] = getswapval(i)
  12.   if i in swaps: del swaps[i]
  13.  
  14. for x in fy_iter (10): print(x)
  15.  
Success #stdin #stdout 0.02s 37024KB
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6
4
5
1
9
0
7
8
2
3
https://ideone.com/sqU2zb
language:
Python 3 (python  3.9.5)
created:
5 years ago
visibility:
public

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