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Python生成不重复随机值的方法

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Release: 2016-06-10 15:12:47
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本文实例讲述了Python生成不重复随机值的方法。分享给大家供大家参考。具体分析如下:

这里从一列表中,生成不重复的随机值

算法实现如下:

import random
total = 100
li = [i for i in range(total)]
res = []
num = 20
for i in range(num):
  t = random.randint(i,total-1)
  res.append(li[t])
  li[t], li[i] = li[i], li[t]
print res
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其实python 已经实现这样的方法:

print random.sample(li, num)
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希望本文所述对大家的Python程序设计有所帮助。

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