题目链接:1323: Repeat Number Description Definition: a+b = c, if all the digits of c are same ( c is more than ten),then we call a and b are Repeat Number. My question is How many Repeat Numbers in [x,y]. 定义:a + b = c,如果 c 的每一位数字相同(c > 10),那么我们就把 a 和 b 称…
Problem B: Repeat Number Time Limit: 1 Sec Memory Limit: 32 MB Description Definition: a+b = c, if all the digits of c are same ( c is more than ten),then we call a and b are Repeat Number. My question is How many Repeat Numbers in [x,y]. Input Ther…
问题 C: Repeat Number 时间限制: 1 Sec 内存限制: 128 MB [cid=1073&pid=2&langmask=0">提交][状态][论坛] 题目描写叙述 Definition: a+b = c, if all the digits of c are same ( c is more than ten).then we call a and b are Repeat Number. My question is How many Repeat …
Repeat Number 题目描述: Definition: a+b = c, if all the digits of c are same ( c is more than ten), then we call a and b are Repeat Number. My question is How many Repeat Numbers in [x,y]. 输入 There are several test cases. Each test cases contains two int…
题目链接:1319: 球 参考:wustoj 1319 球-wust_tanyao,并查集 并查集系列:WUSTOJ 1346: DARK SOULS(Java)并查集 Description Icy is a lonely boy. He was so boring these days. So he started to play a game himself. First, he took a heap of balls with many different colors. ( One…
18.4 Write a method to count the number of 2s between 0 and n. 这道题给了我们一个整数n,让我们求[0,n]区间内所有2出现的个数,比如如果n=20,那么满足题意的是2, 12, 20,那么返回3即可.LeetCode上有一道很类似的题Factorial Trailing Zeroes,但是那道题求5的个数还包括了因子中的5,比如10里面也有5,这是两题的不同之处.那么首先这题可以用brute force来解,我们对区间内的每一个数字…
package isHappy202; /* * Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of the squares of its digits, and rep…
把数位dp写成记忆化搜索的形式,方法很赞,代码量少了很多. 下面为转载内容: a positive integer number is beautiful if and only if it is divisible by each of its nonzero digits. 问一个区间内[l,r]有多少个Beautiful数字 范围9*10^18 数位统计问题,构造状态也挺难的,我想不出,我的思维局限在用递推去初始化状态,而这里的状态定义也比较难 跟pre的…
统计英文article.txt文件中出现hello这个单词的次数 这个是article.txt文件内容 { hello The Royal Navy is trying hello to play hello down the problem, after first trying to hide it. It is clearly embarrassing. They have hello known about the problem for hello some time but they…
题目链接:https://vjudge.net/problem/LightOJ-1245 1245 - Harmonic Number (II) PDF (English) Statistics Forum Time Limit: 3 second(s) Memory Limit: 32 MB I was trying to solve problem '1234 - Harmonic Number', I wrote the following code long long H( int…
二项分布 需求:5个四面体筛子,筛子三面绿色,一面红色,模拟1000000次,统计每次试验红色落地筛子个数的分布 实现:用循环实现5个筛子和1000000次试验,定义函数numRedDown模拟5个筛子试验结果,redDown模拟单次试验结果 Simulation.java 1 import java.util.Random; 2 3 public class Simulation{ 4 static final Random RANDOM = new Random(); 5 static fi…
package isUgly263; /* * Write a program to check whether a given number is an ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For example, 6, 8 are ugly while 14 is not ugly since it includes another prime fac…
题目来源:https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&category=3&page=show_problem&problem=38 Ecological Bin Packing Background Bin packing, or the placement of objects of certain weights into different bins subject…
