Created
May 26, 2016 03:09
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| #! /usr/bin/ruby | |
| # 随机生成 7 位数字的 | |
| string ＝ ('a'..'z').to_a.shuffle[0..7].join |
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优雅的方式生成 10 位大小写和数字随机数
[*'0'..'9', *'a'..'z', *'A'..'Z'].sample(10).join