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#!/usr/bin/ruby
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require ‘date’
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puts "Enter your birthdate (YYYY-MM-DD):"
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birth = Date.parse(gets, true)
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today = Date.today
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age = today-birth # in days
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min_age = (2 * (age – 7 * 365.25)).round
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max_age = (age/2 + 7 * 365.25).round
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min_birth = Date.today – min_age
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max_birth = Date.today – max_age
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puts "Your age pool is #{min_birth.to_s} – #{max_birth.to_s}"
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if min_birth > max_birth
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puts "You’re too young ^__^"
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end