akibayashi的博客

https://www.patest.cn/contests/pat-a-practise/1132Cutting an integer means to cut a K digits long integer Z into two integers of (K/2) digits long integers A and B. For example, after cutting

Avertex coverof a graph is a set of vertices such that each edge of the graph is incident to at least one vertex of the set. Now given a graph with several vertex sets, you are supposed to tell if e

Given a singly linked list, you are supposed to rearrange its elements so that all the negative values appear before all of the non-negatives, and all the values in [0, K] appear before all those grea

https://www.patest.cn/contests/pat-a-practise/1135There is a kind of balanced binary search tree named red-black tree in the data structure. It has the following 5 properties:(1) Every node