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How to generate all N digits number in ruby?

原文 2015-10-03 17:07:18 8 1 ruby/ numbers

如果我给 n=5。答案应该是 10000 到 99999。如果 n=2 那么答案应该是 10 到 99。怎么做？

1 answers

I would use a Range to generate this numbers:

(10**n...10**(n+1)).to_a
#=> [100, 101, 102, 103, ... 998, 999]

A Range with three dots ... excludes the end value.

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