Question

鉴于3个数字：DD，MM，YYYY，知道他们是否结合法定日期的最简单方法是什么？

示例：

14, 05, 2011     =>     Legal
29, 02, 2011     =>     Illegal
29, 02, 2012     =>     Legal
35, 11, 1989     =>     Illegal
14, 18, 2011     =>     Illegal
14, 00, 2011     =>     Illegal
00, 11, 1979     =>     Illegal
31, 11, 1979     =>     Illegal

Answer 1

您可以使用valid_date?但它是YYYY, MM, DD：

irb(main):015:0> require 'date'
=> true
irb(main):021:0> Date::valid_date?(2011,05,14)
=> true
irb(main):022:0> Date::valid_date?(2011,02,29)
=> false
irb(main):023:0> Date::valid_date?(2012,02,29)
=> true

Answer 2

日期有一个方法valid_civil？

require 'date'
dates = DATA.readlines.map{|line| line.split(', ').map(&:to_i)}
dates.each do |date|
  d, m, y = date
  puts Date.valid_civil?(y, m, d)
end

__END__
14, 05, 2011
29, 02, 2011
29, 02, 2012
35, 11, 1989
14, 18, 2011
14, 00, 2011
00, 11, 1979
31, 11, 1979

Answer 3

一种选择是使用类似的东西：

require 'time'

def valid(year,month,day)
   Time.parse "#{year}#{month}#{day}" rescue return false
   return true
end

如何确定给定的日期，月份和年份是否合并了法定日期？

3 个答案: