51
40

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?

More than 5 years have passed since last update.

RubyでN桁のランダムな数字からなる文字列を得る

Last updated at Posted at 2013-07-10

SecureRandomにはそういうメソッドはないみたい。

こんな感じ?

require 'securerandom'

N = 10
p N.times.map { SecureRandom.random_number(10) }.join # "7260150113"

追記:
コメントより、以下のほうがずっと高速にできるようです。

p format("%0#{n}d", SecureRandom.random_number(10**n))
51
40
2

Register as a new user and use Qiita more conveniently

  1. You get articles that match your needs
  2. You can efficiently read back useful information
  3. You can use dark theme
What you can do with signing up
51
40

Delete article

Deleted articles cannot be recovered.

Draft of this article would be also deleted.

Are you sure you want to delete this article?