博客
关于我
【笨方法学PAT】1038 Recover the Smallest Number (30 分)
阅读量:133 次
发布时间:2019-02-26

本文共 1419 字,大约阅读时间需要 4 分钟。

一、题目

Given a collection of number segments, you are supposed to recover the smallest number from them. For example, given { 32, 321, 3214, 0229, 87 }, we can recover many numbers such like 32-321-3214-0229-87 or 0229-32-87-321-3214 with respect to different orders of combinations of these segments, and the smallest number is 0229-321-3214-32-87.

Input Specification:

Each input file contains one test case. Each case gives a positive integer N (≤10​4​​) followed by N number segments. Each segment contains a non-negative integer of no more than 8 digits. All the numbers in a line are separated by a space.

Output Specification:

For each test case, print the smallest number in one line. Notice that the first digit must not be zero.

Sample Input:

5 32 321 3214 0229 87

Sample Output:

22932132143287

二、题目大意

一串数字,组成最小的数。

三、考点

贪心算法

四、注意

1、如果不知道这个神奇的cmp,解决起来估计特别麻烦吧。

五、代码

#include
#include
#include
#include
using namespace std;bool cmp(string s1, string s2) { return s1 + s2 < s2 + s1;}int main() { //read int n; cin >> n; vector
v(n); for (int i = 0; i < n; ++i) cin >> v[i]; //sort sort(v.begin(), v.end(), cmp); //output string s; for (int i = 0; i < n; ++i) s+=v[i]; int i = 0; while (s[i] == '0' && i < s.length()) ++i; if (i == s.length()) cout << 0 << endl; else { for (; i < s.length(); ++i) cout << s[i]; cout << endl; } system("pause"); return 0;}

 

转载地址:http://wlaf.baihongyu.com/

你可能感兴趣的文章
mysql select, from ,join ,on ,where groupby,having ,order by limit的执行顺序和书写顺序
查看>>
MySQL Server 5.5安装记录
查看>>
mysql server has gone away
查看>>
mysql slave 停了_slave 停止。求解决方法
查看>>
MySQL SQL 优化指南:主键、ORDER BY、GROUP BY 和 UPDATE 优化详解
查看>>
MYSQL sql语句针对数据记录时间范围查询的效率对比
查看>>
mysql sum 没返回,如果没有找到任何值,我如何在MySQL中获得SUM函数以返回'0'?
查看>>
mysql Timestamp时间隔了8小时
查看>>
Mysql tinyint(1)与tinyint(4)的区别
查看>>
mysql union orderby 无效
查看>>
mysql v$session_Oracle 进程查看v$session
查看>>
mysql where中如何判断不为空
查看>>
MySQL Workbench 使用手册:从入门到精通
查看>>
mysql workbench6.3.5_MySQL Workbench
查看>>
MySQL Workbench安装教程以及菜单汉化
查看>>
MySQL Xtrabackup 安装、备份、恢复
查看>>
mysql [Err] 1436 - Thread stack overrun: 129464 bytes used of a 286720 byte stack, and 160000 bytes
查看>>
MySQL _ MySQL常用操作
查看>>
MySQL – 导出数据成csv
查看>>
MySQL —— 在CentOS9下安装MySQL
查看>>