02 2022 档案

Python将csv数据导入neo4j

摘要：# coding:utf-8 ########将csv数据导入neo4j#### import csv import py2neo from py2neo import Graph,Node,Relationship,NodeMatcher g=Graph('http://localhost:747 阅读全文

posted @ 2022-02-28 23:42 XA科研阅读(497) 评论(0) 推荐(0) 编辑

python文件转换问题

摘要：文件的打开： file = open("data.txt", "r", encoding="UTF-8") 其中第一个标签为文件的位置和名称，如果放在项目一级目录下，则不需要指定路径：文本数据清洗： import csv import py2neo from py2neo import Graph 阅读全文

posted @ 2022-02-28 22:40 XA科研阅读(61) 评论(0) 推荐(0) 编辑

1126 Eulerian Path (25 分)

摘要：In graph theory, an Eulerian path is a path in a graph which visits every edge exactly once. Similarly, an Eulerian circuit is an Eulerian path which 阅读全文

posted @ 2022-02-19 23:55 XA科研阅读(36) 评论(0) 推荐(0) 编辑

1155 Heap Paths (30 分)

摘要：In computer science, a heap is a specialized tree-based data structure that satisfies the heap property: if P is a parent node of C, then the key (the 阅读全文

posted @ 2022-02-17 18:35 XA科研阅读(31) 评论(0) 推荐(0) 编辑

1147 Heaps (30 分)

摘要：In computer science, a heap is a specialized tree-based data structure that satisfies the heap property: if P is a parent node of C, then the key (the 阅读全文

posted @ 2022-02-16 23:59 XA科研阅读(33) 评论(0) 推荐(0) 编辑

dijkstra第二标尺模板

摘要：dijkstra版 for(int v = 0; v < n; v++) { if(visit[v] == false && e[u][v] != inf) { if(dis[u] + e[u][v] < dis[v]) { dis[v] = dis[u] + e[u][v]; w[v] = w[u 阅读全文

posted @ 2022-02-09 00:24 XA科研阅读(26) 评论(0) 推荐(0) 编辑

类型转换

摘要：整型转字符串： int c=100; string s=to_string(c); cout<<s<<endl; 字符串转整型： string s="10000"; int c=atoi(s.c_str()); cout<<c<<endl; 阅读全文

posted @ 2022-02-02 00:07 XA科研阅读(15) 评论(0) 推荐(0) 编辑