摘要：
We are playing the Guess Game. The game is as follows: I pick a number from 1 to n. You have to guess which number I picked. Every time you guess wron 阅读全文
摘要：
这个算法只是检查能不能找到符合要求的path，但是不保证找到的那一条path是最短的。注意把已经访问过的点设置成3，这样访问过的点就不会被重复访问了。 如果想要找出shortest path的长度，可以用如下的方法： 阅读全文
摘要：
Write an efficient algorithm that searches for a value in an m x n matrix. This matrix has the following properties: Integers in each row are sorted f 阅读全文
摘要：
Given a n x n matrix where each of the rows and columns are sorted in ascending order, find the kth smallest element in the matrix. Note that it is th 阅读全文