WestTwoFlag

总结最近碰到的一些题目

最短路径 Dijstra 图

将两个升序链表合并为一个升序链表的算法

The algorithm to revert a string

The algorithm to get the intersect of two string written in python

Now give you a sequence of signed integers, how can you get the index of one element in the sequence that the summary of elements in left of it and right of it is equal.

Print an asterisk diamond within one loop

The magic of Exlusive OR operation can exchange two integer variable without temporary variable.