天涯沧海的博客

思路：正解应该是nlogn的，暴力最坏n^3,一些博客的二分其实也是n^2的 具体做法就是在比较两个字符串大小时先hash然后二分找最长相同部分，再判断下一个位置大小 Consider n given non-empty strings denoted by s1 , s2 , · · · , sn . Now for each of them, you need to select a corresponding suffix, denoted by suf1, suf2...

Description A rooted tree is a well-known data structure in computer science and engineering. An example is shown below: In the figure, each node is labeled with an integer from {1, 2,...,16}. Node 8...