快速计算某天星期几.（How fast is the day a week）.docVIP

快速计算某天星期几.（How fast is the day a week） Whats the date of the week? Kim. Larson Kim holds a doctorate in computer science. He has a strong interest in databases, algorithms, and data structures. His contact address is (original) For the Danish translator -) 31, DK - 5270, Odense, N, Denmark, or E-mail to kslarsen@imada.ou.dk. brief introduction Bruce Schnell Four, six, nine, eleven, thirty days....... The nursery rhyme is like this; maybe youve also broken your fingers and tossed and turned so that you can catch the odd number of fingers It represents a short month with only 30 days This formula is very useful for us (I am talking about this silly songs grew up, but this is no computer) A part of inspiration. Of course, we can use a lot of IFTHENELSES statements or several CASE to write the program, make it a specified date is calculated What day is it。 But I prefer the new technique that Kim Larsen brought to us this month in the algorithmic trail, because his approach is different, and in a whole new direction The problem of calculating dates by hand. Actually, theres no mathematical formula for figuring out what day a week is on a given date, but we can try to piece together, if... Our attempts have been successful, and youll have an easy to program mathematical formula that automatically calculates what day it is. By the way, if you have to design more clever algorithms, or is a new breakthrough in the existing methods, might as well tell me, Im all ears. My contact method is schneier@, or leave a note for me at the DJJ editorial office. Have you ever wondered how your computer knows today is Wednesday? Even if your computer shuts down and you set a new date after the reboot, it will immediately know What day is it?. When you were a child, you might have seen a record of years, months, and days, with just a few figures and another form attached to it Ill let you know what day it is. Of course, you can add such a spreadsheet to the operating system of your compute