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[click here to zip down to the schedule of public events] Happy -1+(2/.3)*45*6.78-9 (hint: 2/.3 times 45 times 6.78 is 2034) (I guess I'm gettin' kinda old: 12.3+.4-5.6+78.9; think of Maxwell Smart. In fact, I've now lived more than 31415.9265 days.) Happy Π Day In honor of March 14, I've written an “unpublication” about combinatorial patterns called parades, which I think are loads of fun. Take a
Knuth先生のTAOCPは多くのことを盛り込みたいが故に, 説明は最小限であって, 手を動かし, プログラムを書き, 考えないとなんのこっちゃである. 7.1.3項演習問題52, 53もその類いである. まずδswap. 下の図のxはビット列で, そのブロックAとC, BとDを交換し, x''としたい. 交換するブロックの長さはそれぞれ等しく, ブロック間の距離δはすべて等しい. その方法は, まずxを右にδ桁シフトしxと排他和をとり, 右側のブロックの形111...1でマスクし, yとする. ABA⊕Bのこと. xとyの排他和をx'とする. yを左にδ桁シフトしx'と排他和をとりx''とする. これをδswapという. TAOCPではこの話題の前に, ビット列のi番目とj番目を交換したい. 本書の解を見る前に自分の方法を考えよとある. 私の考えはこれと同じであった. この方法で64ビッ
The State of the Database Landscape Survey How are you navigating the database landscape? Share your experiences in our survey and enter a prize draw to win a $250 Amazon voucher. Take the survey It is often said that entrepreneurial companies tend to reflect the personality of their founder, and nowhere was this more true than at Microsoft. Bill Gates was by turns very brilliant, very arrogant, a
Professor Donald Knuth visits Google's Mountain View, CA headquarters to discuss the interactions between faith and science. This event took place on March 16, 2009, as part of the Authors@Google series. In the fall of 1999, Donald was invited to give six public lectures at MIT on the general subject of relations between faith and science, during which he touched upon such topics as the intera
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