pinzolo's comment on LL Golf Hole 3 - 13日の金曜日を数え上げる

LL Golf Hole 3 - 13日の金曜日を数え上げる (Nested Flatten)

LINQのみ。もうちょっと書きようがあるかなぁ？

DateTime today = DateTime.Now.Date;
var q = from year in Enumerable.Range(today.Year, 2014 - today.Year)
        from month in Enumerable.Range(1, 12)
        let d = new DateTime(year, month, 13)
        where (d.DayOfWeek == DayOfWeek.Friday) && (d >= today)
        select d;
foreach (DateTime d in q)
{
    Console.WriteLine("{0:yyyy/MM/dd(ddd)}", d);
}
Console.WriteLine(q.Count());
}

[ C# ] [ download code ] ]

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pinzolo's comment on LL Golf Hole 3 - 13日の金曜日を数え上げる