Given n nodes labeled from 0 to n - 1 and a list of undirected edges (each edge is a pair of nodes), write a function to find the number of connected components in an undirected graph. Example 1: 0 3 | | 1 --- 2 4 Given n = 5 and e
求集合里元素的个数 输出最大的个数是多少 Sample Input41 23 45 61 641 23 45 67 8 Sample Output42 # include <iostream> # include <cstdio> # include <cstring> # include <algorithm> # include <cmath> # include <queue> # define LL long long usi
统计无向图中三角形的个数,复杂度m*sqrt(m). #include<stdio.h> #include<vector> #include<set> #include<math.h> #include<algorithm> using namespace std; #define LL long long vector<]; set<LL> st; ], link[], ]; int main(void) { LL ans,
package com.lanxi.demo2; import java.util.HashSet; import java.util.Iterator; import java.util.Set; public class Test { public static void main(String[] args) { //引用一个Set集合实现类 Set set=new HashSet(); //添加单个元素 set.add("哈"); set.add("士");
https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=251 Network A Telephone Line Company (TLC) is establishing a new telephone cable network. They are connecting several places numbered by integers
Problem Description 输入一串字符,统计这串字符里的字母个数,数字个数,空格字数以及其他字符(最多不超过100个字符) Input 多组测试数据,每行一组 Output 每组输出一行,分别是字母个数,数字个数,空格字数以及其他字符个数 Sample Input I am a student in class 1. I think I can! Sample Output 18 1 6 1 10 0 3 1 HINT char str[100];//定义字符型数组 while(g
// 数组里相邻两个数做比较 取满足条件的那个(以此类推) var arr = [1,3,4,5,6,7]; function Max(array){ var max = array[0]; for(var i=0; i<array.length; i++){ if(max<array[i]) max = array[i]; } return max; } console.log(Max(arr)); function Min(array){ var min = array[0]; for(v
Given a chemical formula (given as a string), return the count of each atom. An atomic element always starts with an uppercase character, then zero or more lowercase letters, representing the name. 1 or more digits representing the count of that elem
