generate a random number with 7 digits

2018-07-04 06:32:02

How can I produce a random number in a range from 1million to 10 million.

rand(10) works, I tried rand(1..10) and that didn't work.

把你的基数，1,000,000，并添加一个从0到你的最大起始数的随机数：

 1_000_000 + Random.rand(10_000_000 - 1_000_000) #=> 3084592

这是一个实例方法：

puts Random.new.rand(1_000_000..10_000_000-1)

This will generate a random number between 1,000,000 and 9,999,999.

rand(10_000_000-1_000_000)+1_000_000

This works in 1.8.7 without any gems(backports, etc).

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