如何正确的写出二分查找 | qianzui's blog



如何正确的写出二分查找 | qianzui's blog

还记得Jon Bentley关于二分查找的那句著名言论吗？————90%以上的程序员无法正确无误的写出二分查找代码！几年前刚毕业的时候无意间看到这句话的时候，还有点不以为然，感觉就是一个普通的分治法的算法嘛，有这么夸张？
今天在看SparseArray源码的时候，碰巧发现一个设计的很巧妙的二分查找算法。先看代码：

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