27 July 2006
Free Weather Stickers for Your Homepage! : Weather Underground
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l3b14
Jul 26 2006 15:00:44
Free Weather Stickers® for Your Homepage!
We have cooked up some fun dynamic images for you to put on your homepage. In return, all we ask is that you link the image to our site.
Here's How it Works:
1. Click on any Weather Sticker®
2. Copy the HTML code on the resulting page
3. Paste it onto your page
24 July 2006
FrogBSD Blog » Nearly All Binary Searches and Mergesorts are Broken
Nearly All Binary Searches and Mergesorts are Broken
Filed under: Programming — zmx @ 10:40 am
每個 Programmer 都寫過既常用又簡單的 Binary Search,真的簡單嗎? From Google Research Blog
1946 年,第一個 Binary Search 演算法
1962 年,第一個 “正確” 的 Binary Search 演算法,最前面十八個都錯了.
1986 年,Jon Bentley 在課堂上和 Programming Pearls 這本書中,說明了這麼簡單的演算法(1962版)可以犯下多少的 bug.
2006 年,書中那個大眾引用的程式被抓到 integer overflow bug.
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(2 marks)