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gingeleski/unique_date.rb

Created January 22, 2015 21:26
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Finds the next date when all digits in the date sequence will be unique.
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unique_date.rb
# Finds the next date when all digits in the date sequence will be unique.
require "date"
day_test = Date.today
while true
day_test = day_test.next
query = day_test.year.to_s
query << "0" if day_test.month < 10
query << day_test.month.to_s
query << "0" if day_test.day < 10
query << day_test.day.to_s
break if ("0".."9").all?{|c| query.count(c) <= 1}
end
puts day_test
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